Boston, MA · Airport profile
BOS
Boston Logan International Airport
77.2% of departures from BOS arrived on time across 440,893 flights, July 2023 – July 2026. The weakest hour is 8 PM, at 63.2%. Late-arriving aircraft accounts for the most delay minutes.
BOS right now
Live conditions where a permitted source publishes them, and the historical record where none does.
Aviation weather is not currently a factor.
93.3% leave on time
05:00–05:59 local · 14,514 departures on record
When flights run late in this hour, most of the delay is attributed to the airline.
Historical pattern for BOS from US DOT BTS — not a live reading.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedForecast issued 08:25Z.
UpdatedBelow 10,000 ft, so aircraft overflying at cruise are not counted. These are observations, not an operational status: a count is a floor, since receiver coverage varies and a movement between two samples can be missed.
UpdatedAircraft observations from ADSB.lol (opens in a new tab) (Katia Esposito and contributing feeders), under the ODbL 1.0 (opens in a new tab). Derived data.
FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.
Airport reliability
Departures from BOS, July 2023 – July 2026.
Better than 20% of major US airports covered by FlyerIntel (64 compared)
Calculated from 440,893 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Why flights are cancelled at BOS
Every cancellation carries a reason code filed by the airline that operated the flight. Departures, July 2023 – July 2026.
Extreme weather accounts for 46.4% of cancelled departures from BOS — about 1 in every 107 scheduled departures. That is 13 points lower than the 59.5% recorded across every airport FlyerIntel covers.
Share of cancellations
Of 8,843 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
4,106 cancellations, 46.4% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
2,471 cancellations, 27.9% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
2,262 cancellations, 25.6% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
4 cancellations, <0.1% of the total.
8,843 of 440,893 scheduled departures from BOS were cancelled. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
By carrier
| Carrier | Cancelled | Rate | Airline | Weather | Air traffic | Security |
|---|---|---|---|---|---|---|
| Republic Airways YX | 2,689 | 2.96% | 25% | 31% | 44% | <1% |
| JetBlue B6 | 2,443 | 1.98% | 21% | 41% | 38% | 0% |
| Delta Air Lines DL | 1,036 | 1.29% | 51% | 42% | 8% | <1% |
| American Airlines AA | 960 | 1.87% | 10% | 82% | 8% | 0% |
| United Airlines UA | 677 | 1.74% | 31% | 57% | 12% | 0% |
Shares are of each carrier’s own coded cancellations at BOS and run across the row, so they total 100%. “Rate” is cancellations as a share of that carrier’s scheduled departures here. Two carriers on the same runways in the same weather can file very different splits, so read this as what each airline reported about itself, not as a ranking of fault. Carriers below the published minimum of coded cancellations are not listed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026 · Reason codes are each airline’s own filing, not an independent finding of fault. Shown for airports with at least 500 coded cancellations; 8,843 were recorded at BOS.
Why flights run late at BOS
Where US DOT attributed the delay minutes on departures from BOS.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for departures from BOS. Only delays of 15 minutes or more are attributed.
Of the 80,373 departures from BOS that left 15 or more minutes late and have a known inbound aircraft, 63% followed a flight that landed 15 or more minutes late. The other 37% left late even though the aircraft had come in on time or early. Across the 64 covered airports that share runs from 47% to 73%, with a median of 62%; BOS’s is the 29th highest.
The late flight is the one the same aircraft flew into BOS just before, found from the tail number in the DOT file. Airlines and hours differ from one airport to the next, so this describes the departures from BOS and does not rate the airport.
An airport is only partly the author of its own delays. Late-arriving aircraft describes the national schedule arriving here more than anything about this airfield. Air traffic control covers airspace and airport capacity, which is where a congested airport shows up; only the airline category sits squarely inside the carriers’ own operation. How differently they run it is further down this page.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What weather costs at BOS
Departures from BOS by the weather at the airport in the hour they were scheduled to leave, July 2023 – July 2026.
13.8% of scheduled departures from BOS left in an hour of bad weather. 5.3% of them were cancelled, against 1.4% in normal conditions, and 65.1% of the ones that flew arrived on time, against 79.7%. Those hours held 37% of all cancelled departures. That is about 2,396 more cancellations than the normal-conditions rate would give.
Cancellations were highest in snow or ice hours: 17.7% of 8,175 departures, 13.0 times the normal rate.
Airlines filed 46% of BOS’ coded cancellations under extreme weather. By the weather at the airport in the scheduled hour, 37% of cancelled departures were in bad-weather hours. A code is the airline’s stated reason and an hour’s weather is what the airport reported, so the two need not match.
By weather
Scheduled departures, July 2023 – July 2026| Weather at the airport | Departures | Cancelled | Left on time | Arrived on time | Avg. departure delay |
|---|---|---|---|---|---|
| Normal conditionsVFR with no thunderstorm, snow or ice, fog, heavy rain or high wind | 341,00977.6% of all | 1.4% | 80.0% | 79.7% | 11.6 min |
| Any bad weatherIFR or LIFR, or a thunderstorm, snow or ice, fog, heavy rain or high wind | 60,84013.8% of all | 5.3%3.9 times normal | 69.3% | 65.1%14.6 points below normal | 25.0 min |
| MVFRceiling 1,000 to 3,000 feet or visibility 3 to 5 miles | 41,7859.5% of all | 3.4%2.5 times normal | 72.7% | 71.4%8.3 points below normal | 18.9 min |
| IFRceiling 500 to 999 feet or visibility 1 to under 3 miles | 28,4006.5% of all | 4.6%3.4 times normal | 68.6% | 63.9%15.8 points below normal | 25.9 min |
| LIFRceiling under 500 feet or visibility under 1 mile | 15,7133.6% of all | 7.2%5.3 times normal | 68.5% | 65.4%14.3 points below normal | 26.6 min |
| Thunderstorma thunderstorm reported at the airport | 1,7650.4% of all | 11.9%8.7 times normal | 38.5% | 29.6%50.1 points below normal | 73.3 min |
| Snow or icesnow, snow grains, ice pellets, freezing rain or freezing drizzle | 8,1751.9% of all | 17.7%13.0 times normal | 63.2% | 41.7%38.0 points below normal | 36.5 min |
| Fogfog or freezing fog reported at the airport | 4,6841.1% of all | 13.7%10.1 times normal | 66.1% | 63.3%16.4 points below normal | 29.8 min |
| Heavy rainheavy rain reported at the airport | 4,0110.9% of all | 6.5%4.7 times normal | 59.9% | 55.3%24.4 points below normal | 38.2 min |
| High windwind of 25 knots or more, or gusts of 30 knots or more | 15,1153.4% of all | 5.8%4.3 times normal | 69.9% | 67.4%12.3 points below normal | 22.7 min |
| Low ceilinga broken or overcast layer under 1,000 feet | 35,9618.2% of all | 4.9%3.6 times normal | 70.0% | 66.8%12.9 points below normal | 24.5 min |
| Low visibilityvisibility under 3 miles | 28,7616.5% of all | 6.9%5.0 times normal | 65.7% | 60.7%19.0 points below normal | 30.1 min |
A departure is counted in every row its hour fits, so the rows overlap and do not add up. Left on time is a departure under 15 minutes late, and arrived on time an arrival under 15 minutes late; cancelled is the share of scheduled departures. Rows with fewer than 120 departures are not scored.
This is the weather reported at BOS in the hour a flight was scheduled to leave. It leaves out the weather at the destination and on the way, weather that arrived after the scheduled time, and anything else that goes wrong in a bad hour. An hour takes the worst conditions any report in it gave. Weather was matched to 99.7% of the airport’s scheduled departures; the rest left in hours with no report, or at a scheduled time the flight records cannot place exactly. Bad-weather hours are compared with normal hours at the same airport, not with what the same flights would have done in a clear sky: they also fall more often in some seasons and at some times of day.
Source: FlyerIntel analysis of US DOT BTS flight records and Iowa Environmental Mesonet weather reports · July 2023 – July 2026 · Where the weather comes from, and its limits. All covered airports side by side: What Weather Costs Each Airport.
Which airlines hold up in bad weather at BOS
Cancellations by airline in hours of bad weather at BOS, against the other carriers in the same months, July 2023 – July 2026.
14% of the weather-matched departures from BOS left in an hour of bad weather at the airport. 5.3% of them were cancelled. That is 3.9 times the 1.4% in normal hours. No one carrier holds most of them; 9 airlines have enough to compare.
Compared with the other carriers at BOS in the same months, Delta Air Lines (3.1% cancelled against 5.8% for the others; below them in normal hours too) cancelled the fewest in bad weather and Spirit Airlines (7.8% cancelled against 4.4% for the others; above them in normal hours too) the most. 5 more airlines are also clearly apart from the others.
Airlines in bad weather at BOS
Scheduled departures, July 2023 – July 2026| Airline | Bad-weather departures | Cancelled | Other carriers | Normal hours |
|---|---|---|---|---|
| Delta Air Lines | 10,97118% of bad-weather | 3.1%below the others | 5.8% | 1.0%others 1.5% |
| Alaska Airlines | 1,0212% of bad-weather | 2.9%below the others | 5.0% | 0.9%others 1.4% |
| Southwest Airlines | 2,8095% of bad-weather | 3.6%below the others | 5.3% | 0.7%others 1.4% |
| Envoy Air | 8261% of bad-weather | 4.1% | 5.3% | 1.4%others 1.4% |
| American Airlines | 6,96411% of bad-weather | 4.7%below the others | 5.5% | 1.3%others 1.4% |
| United Airlines | 5,3289% of bad-weather | 4.6%below the others | 5.4% | 1.2%others 1.4% |
| JetBlue | 17,33228% of bad-weather | 5.4% | 5.1% | 1.3%others 1.3% |
| Republic Airways | 12,58121% of bad-weather | 8.1%above the others | 5.0% | 1.9%others 1.3% |
| Spirit Airlines | 2,1123% of bad-weather | 7.8%above the others | 4.4% | 2.1%others 1.2% |
Best first. The other carriers’ column applies their rate in each month to the airline’s own departures, so a stormy month is not held against it; the normal-hours column gives the same pair outside bad weather.
The 9 listed airlines flew 99% of the bad-weather departures at BOS; a carrier under 500 is not listed. The comparison does not hold the hour of the day, the destination or the aircraft fixed, and a gap counts as clear only at 2 standard errors and 0.3 points. Envoy Air and Republic Airways fly for mainline airlines and are counted as carriers of their own here, though they share the airport’s gates, its de-icing and often its decisions to cancel.
Source: FlyerIntel analysis of US DOT BTS flight records and Iowa Environmental Mesonet weather reports · July 2023 – July 2026 · Where the weather comes from, and its limits. All covered airports side by side: What Weather Costs Each Airport.
Turning aircraft around at BOS
Time on the ground between one flight and the next of the same aircraft at BOS, and what a late arrival does to the next departure, July 2023 – July 2026.
The median turn at BOS is scheduled for 60 minutes on the ground and takes 68 minutes, against 56 minutes and 63 minutes across all airports. Aircraft are given longer on the ground here than at the typical airport. The 8 minutes by which the typical turn runs over its schedule are about what it is across all airports. 20.9% of turns here began with an aircraft that landed 15 or more minutes late, above the 18.9% for all airports.
When the aircraft landed 15 or more minutes late (63,722 turns here, 62 minutes late on average), 65% of the turns were finished in no more than the scheduled ground time, against 68% across all airports. 75% of those flights left 15 or more minutes late, against 72%. After an aircraft that landed on time, 11% did (all airports 11%).
Given the turn lengths scheduled here, the network’s rates would give 70% finished in the schedule and 70% leaving late. BOS does worse on both counts: fewer late turns are finished in the schedule and more late aircraft become late departures, so a late arrival is more likely to stay late here than the schedule alone explains.
Turns at BOS against all airports
304,207 turns, July 2023 – July 2026| Measure | BOS | All airports | All airports, same turn lengths |
|---|---|---|---|
| Median scheduled turn | 60 min | 56 min | — |
| Median actual turn | 68 min | 63 min | — |
| Turns that began with an aircraft 15+ minutes late | 21% | 19% | — |
| Late turns finished within the schedule | 65% | 68% | 70% |
| Late inbound that left 15+ minutes late | 75% | 72% | 70% |
| On-time inbound that left 15+ minutes late | 11% | 11% | — |
The last column is the network’s rate at the turn lengths scheduled at BOS, band by band from under 30 minutes to 3 to 6 hours. A turn finishes within the schedule when the aircraft spent no more time on the ground than the schedule gave it.
A turn pairs an aircraft’s landing at BOS with its next departure from it by tail number; the aircraft is never named. These 304,207 turns are 69% of the flights that left BOS in the period; the rest are an aircraft’s first flight after a long stay, flights without a usable inbound, and cancelled flights. Ground time runs from the gate. Turns under 30 minutes are kept, but most leave late even after an on-time landing. Airlines set their own turn schedules, so this describes the airlines that fly at BOS and does not rate the airport.
Source: FlyerIntel analysis of US DOT BTS flight records · July 2023 – July 2026 · Airports side by side: Where a Late Aircraft Gets Its Time Back.
What sets BOS apart
Where BOS’s hours, months, airlines and taxi time differ most from the other airports, July 2023 – July 2026.
9 PM is where BOS falls furthest behind the rest: 64.0% of its 9 PM departures arrive on time, 7.3 points below the 71.3% for that hour elsewhere.
June treats BOS better than it treats the rest of the country: 75.2% on time against 72.8% elsewhere, 2.4 points ahead.
September is BOS’s hardest month against the field, 78.0% on time to 82.8% elsewhere, 4.8 points short.
Allegiant Air does better out of BOS than anywhere else it flies: 85.8% on time here, 75.7% on its other departures, 10.1 points apart.
Hawaiian Airlines’ departures from BOS arrive on time 68.6% of the time, 15.1 points worse than the 83.7% the same airline manages at its other airports.
Departing aircraft spend 20.9 minutes on average between pushback and takeoff at BOS, 2.3 minutes more than the 18.6 minutes at the other airports.
BOS against the other airports
July 2023 – July 2026| Measure | BOS | Elsewhere | Gap | Flights behind it |
|---|---|---|---|---|
| Hour: 9 PM departures | 64.0% | 71.3% | −7.3 pts | 6,717 here, 677,594 elsewhere |
| Month: June | 75.2% | 72.8% | +2.4 pts | 36,926 here, 1,434,951 elsewhere |
| Month: September | 78.0% | 82.8% | −4.8 pts | 35,021 here, 1,367,445 elsewhere |
| Airline: Allegiant Air | 85.8% | 75.7% | +10.1 pts | 1,776 here, 375,034 elsewhere |
| Airline: Hawaiian Airlines | 68.6% | 83.7% | −15.1 pts | 529 here, 196,955 elsewhere |
| Taxi-out: Departures | 20.9 min | 18.6 min | +2.3 min | 432,345 here, 17,197,764 elsewhere |
"Elsewhere" is every other covered airport together, taken from the same aggregates as this page with BOS’s own flights removed (for airlines, that airline’s flights from all its other airports). Hours, months and airlines appear only where both sides have at least 120 completed flights (airlines 500) and the gap is at least 2 points and 2 standard errors; only the largest gap in each direction is shown. The taxi figure is weighted by departures and has no error estimate, so it appears from 2 minutes.
Best time to fly from BOS
On-time arrival rate by scheduled local departure time: each weekday and hour, and averaged over the week.
Flights departing 5–9 AM arrived on time 87.0% of the time, against 64.5% for 9 PM–5 AM departures — a gap of 22.5 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time.
Tuesday 5–6 AM was the most reliable slot at BOS (93.0% on time, 1,974 flights) and Sunday 9–10 PM the least (57.0%, 1,215 flights).
Hour of departure matters more than day of the week: hourly averages sit a typical 9.0 points from the airport-wide rate, weekday averages 2.5 points.
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| 5 AM–6 AM | |||||||
| 6 AM–7 AM | |||||||
| 7 AM–8 AM | |||||||
| 8 AM–9 AM | |||||||
| 9 AM–10 AM | |||||||
| 10 AM–11 AM | |||||||
| 11 AM–12 PM | |||||||
| 12 PM–1 PM | |||||||
| 1 PM–2 PM | |||||||
| 2 PM–3 PM | |||||||
| 3 PM–4 PM | |||||||
| 4 PM–5 PM | |||||||
| 5 PM–6 PM | |||||||
| 6 PM–7 PM | |||||||
| 7 PM–8 PM | |||||||
| 8 PM–9 PM | |||||||
| 9 PM–10 PM | |||||||
| 10 PM–11 PM |
On-time rate, % · stronger color, fewer on time
- 50–59
- 60–69
- 70–79
- 80–89
- 90–99
- Most reliable slot
- Least reliable slot
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.
Best and worst slots are named only among slots with 500+ flights, and only when the gap is larger than sampling error. Departures before 5 AM and after 11 PM (98 flights) are not drawn: no slot in those hours has enough flights to score.
View as tableHide table
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| 5 AM–6 AM | 91.6% on time2,153 flights | 93.0% on time1,974 flights | 92.9% on time1,965 flights | 91.6% on time2,166 flights | 91.9% on time2,154 flights | 91.9% on time2,036 flights | 90.9% on time2,066 flights |
| 6 AM–7 AM | 88.6% on time5,629 flights | 89.6% on time5,397 flights | 89.0% on time5,419 flights | 89.3% on time5,551 flights | 88.5% on time5,580 flights | 87.9% on time4,178 flights | 88.3% on time4,913 flights |
| 7 AM–8 AM | 84.4% on time6,483 flights | 87.2% on time6,286 flights | 87.1% on time6,227 flights | 85.5% on time6,449 flights | 84.9% on time6,460 flights | 84.0% on time5,682 flights | 85.4% on time6,217 flights |
| 8 AM–9 AM | 83.5% on time5,228 flights | 86.7% on time5,155 flights | 87.7% on time5,051 flights | 84.2% on time5,184 flights | 83.4% on time5,110 flights | 84.2% on time4,717 flights | 84.2% on time4,904 flights |
| 9 AM–10 AM | 84.9% on time4,188 flights | 86.6% on time3,947 flights | 88.4% on time3,953 flights | 84.0% on time4,161 flights | 83.1% on time4,200 flights | 83.3% on time3,735 flights | 84.2% on time4,030 flights |
| 10 AM–11 AM | 81.8% on time3,726 flights | 84.1% on time3,340 flights | 87.1% on time3,396 flights | 82.1% on time3,732 flights | 81.2% on time3,796 flights | 81.6% on time3,109 flights | 79.4% on time3,639 flights |
| 11 AM–12 PM | 79.5% on time3,690 flights | 84.7% on time3,489 flights | 86.9% on time3,460 flights | 81.2% on time3,569 flights | 80.6% on time3,613 flights | 81.1% on time2,945 flights | 79.0% on time3,484 flights |
| 12 PM–1 PM | 78.0% on time3,523 flights | 81.8% on time3,128 flights | 81.9% on time3,171 flights | 80.0% on time3,440 flights | 77.8% on time3,544 flights | 79.7% on time2,917 flights | 75.8% on time3,466 flights |
| 1 PM–2 PM | 76.9% on time3,015 flights | 80.6% on time2,897 flights | 82.3% on time2,929 flights | 75.7% on time2,979 flights | 76.3% on time3,024 flights | 80.1% on time2,289 flights | 75.7% on time2,967 flights |
| 2 PM–3 PM | 73.3% on time3,238 flights | 79.6% on time3,083 flights | 79.9% on time3,083 flights | 75.2% on time3,192 flights | 72.2% on time3,211 flights | 76.9% on time2,543 flights | 72.6% on time3,305 flights |
| 3 PM–4 PM | 68.6% on time4,174 flights | 76.5% on time3,945 flights | 75.4% on time3,905 flights | 69.1% on time4,112 flights | 68.8% on time4,146 flights | 74.5% on time3,586 flights | 67.5% on time4,136 flights |
| 4 PM–5 PM | 66.7% on time3,976 flights | 71.2% on time3,687 flights | 70.2% on time3,755 flights | 63.4% on time3,952 flights | 62.7% on time3,999 flights | 70.4% on time3,548 flights | 62.2% on time3,952 flights |
| 5 PM–6 PM | 66.9% on time4,544 flights | 72.0% on time4,438 flights | 71.4% on time4,452 flights | 62.0% on time4,508 flights | 62.8% on time4,529 flights | 71.3% on time3,953 flights | 61.3% on time4,471 flights |
| 6 PM–7 PM | 67.4% on time4,118 flights | 72.6% on time3,805 flights | 70.0% on time3,837 flights | 60.5% on time4,130 flights | 63.6% on time4,144 flights | 70.0% on time3,242 flights | 61.4% on time4,087 flights |
| 7 PM–8 PM | 64.8% on time3,799 flights | 70.7% on time3,450 flights | 70.4% on time3,487 flights | 60.3% on time3,712 flights | 63.2% on time3,734 flights | 70.7% on time2,353 flights | 58.5% on time3,743 flights |
| 8 PM–9 PM | 65.1% on time3,741 flights | 69.6% on time2,974 flights | 68.0% on time3,112 flights | 57.7% on time3,627 flights | 61.9% on time3,724 flights | 65.9% on time1,815 flights | 57.6% on time3,672 flights |
| 9 PM–10 PM | 65.6% on time1,127 flights | 71.4% on time915 flights | 68.4% on time951 flights | 61.5% on time1,113 flights | 61.1% on time1,102 flights | 66.9% on time576 flights | 57.0% on time1,215 flights |
| 10 PM–11 PM | 69.8% on time192 flights | 74.6% on time146 flights | 76.2% on time152 flights | 65.3% on time200 flights | 69.1% on time200 flights | 59.8% on time131 flights | 59.4% on time221 flights |
By departure window
All days combinedBy departure hour
All days combined- 12 AM to 4 AM: too few flights to score
- 5 AM: 92.0% on time from 14,514 flights
- 6 AM: 88.8% on time from 36,667 flights
- 7 AM: 85.5% on time from 43,804 flights
- 8 AM: 84.8% on time from 35,349 flights
- 9 AM: 84.9% on time from 28,214 flights
- 10 AM: 82.4% on time from 24,738 flights
- 11 AM: 81.9% on time from 24,250 flights
- 12 PM: 79.2% on time from 23,189 flights
- 1 PM: 78.2% on time from 20,100 flights
- 2 PM: 75.6% on time from 21,655 flights
- 3 PM: 71.4% on time from 28,004 flights
- 4 PM: 66.6% on time from 26,869 flights
- 5 PM: 66.7% on time from 30,895 flights
- 6 PM: 66.3% on time from 27,363 flights
- 7 PM: 65.1% on time from 24,278 flights
- 8 PM: 63.2% on time from 22,665 flights
- 9 PM: 64.0% on time from 6,999 flights
- 10 PM: 67.4% on time from 1,242 flights
- 11 PM: too few flights to score
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Buckets with fewer than 120 flights are not scored.
International arrivals
How long passport control normally takes here, hour by hour and hall by hall. This is the arrivals queue, not departure security — and it is history, not a live wait.
A US passport clears Terminal E, BOS’s busiest hall, in a typical 14 min; everyone else in the same terminal typically takes 19 min, and 36 min on a busy day. These are separate halls, separately staffed — CBP’s single combined figure of 16 min is a number few arrivals actually experience.
Terminal by terminal, across the day
| Terminal | US passports | US busy day | Other passports | Other busy day | Global Entry |
|---|---|---|---|---|---|
| Terminal E | 14 min | 23 min | 19 min | 36 min | 13.8% of arrivals |
US passports — Terminal E
- 12 AM–1 AM: too few records to publish
- 1 AM–2 AM: too few records to publish
- 2 AM–3 AM: too few records to publish
- 3 AM–4 AM: too few records to publish
- 4 AM–5 AM: too few records to publish
- 5 AM–6 AM: typically 19 min, 36 min on a busy day (198 days)
- 6 AM–7 AM: typically 18 min, 32 min on a busy day (319 days)
- 7 AM–8 AM: typically 17 min, 27 min on a busy day (520 days)
- 8 AM–9 AM: typically 19 min, 30 min on a busy day (489 days)
- 9 AM–10 AM: typically 19 min, 34 min on a busy day (527 days)
- 10 AM–11 AM: typically 14 min, 24 min on a busy day (647 days)
- 11 AM–12 PM: typically 11 min, 18 min on a busy day (666 days)
- 12 PM–1 PM: typically 10 min, 15 min on a busy day (699 days)
- 1 PM–2 PM: typically 12 min, 17 min on a busy day (778 days)
- 2 PM–3 PM: typically 15 min, 22 min on a busy day (775 days)
- 3 PM–4 PM: typically 14 min, 21 min on a busy day (778 days)
- 4 PM–5 PM: typically 14 min, 20 min on a busy day (760 days)
- 5 PM–6 PM: typically 13 min, 20 min on a busy day (775 days)
- 6 PM–7 PM: typically 12 min, 19 min on a busy day (770 days)
- 7 PM–8 PM: typically 14 min, 21 min on a busy day (776 days)
- 8 PM–9 PM: typically 16 min, 25 min on a busy day (776 days)
- 9 PM–10 PM: typically 14 min, 23 min on a busy day (765 days)
- 10 PM–11 PM: typically 12 min, 20 min on a busy day (726 days)
- 11 PM–12 AM: typically 10 min, 17 min on a busy day (430 days)
US citizens and lawful permanent residents, who use the US-passport lanes.
All other passports — Terminal E
- 12 AM–1 AM: too few records to publish
- 1 AM–2 AM: too few records to publish
- 2 AM–3 AM: too few records to publish
- 3 AM–4 AM: too few records to publish
- 4 AM–5 AM: too few records to publish
- 5 AM–6 AM: typically 30 min, 47 min on a busy day (198 days)
- 6 AM–7 AM: typically 23 min, 37 min on a busy day (319 days)
- 7 AM–8 AM: typically 23 min, 37 min on a busy day (520 days)
- 8 AM–9 AM: typically 24 min, 39 min on a busy day (489 days)
- 9 AM–10 AM: typically 24 min, 42 min on a busy day (527 days)
- 10 AM–11 AM: typically 22 min, 38 min on a busy day (647 days)
- 11 AM–12 PM: typically 15 min, 29 min on a busy day (666 days)
- 12 PM–1 PM: typically 14 min, 22 min on a busy day (699 days)
- 1 PM–2 PM: typically 18 min, 28 min on a busy day (778 days)
- 2 PM–3 PM: typically 22 min, 40 min on a busy day (775 days)
- 3 PM–4 PM: typically 20 min, 39 min on a busy day (778 days)
- 4 PM–5 PM: typically 18 min, 34 min on a busy day (760 days)
- 5 PM–6 PM: typically 18 min, 34 min on a busy day (775 days)
- 6 PM–7 PM: typically 17 min, 32 min on a busy day (770 days)
- 7 PM–8 PM: typically 18 min, 34 min on a busy day (776 days)
- 8 PM–9 PM: typically 22 min, 44 min on a busy day (776 days)
- 9 PM–10 PM: typically 21 min, 38 min on a busy day (765 days)
- 10 PM–11 PM: typically 18 min, 30 min on a busy day (726 days)
- 11 PM–12 AM: typically 14 min, 25 min on a busy day (430 days)
Every other arriving passenger, including visa and visa-waiver travelers.
Hour by hour — Terminal E
| Cleared in hour | US passports | US busy day | Other passports | Other busy day | Booths open |
|---|---|---|---|---|---|
| 5 AM–6 AM | 19 min | 36 min | 30 min | 47 min | 7 |
| 6 AM–7 AM | 18 min | 32 min | 23 min | 37 min | 8 |
| 7 AM–8 AM | 17 min | 27 min | 23 min | 37 min | 7 |
| 8 AM–9 AM | 19 min | 30 min | 24 min | 39 min | 7 |
| 9 AM–10 AM | 19 min | 34 min | 24 min | 42 min | 6 |
| 10 AM–11 AM | 14 min | 24 min | 22 min | 38 min | 8 |
| 11 AM–12 PM | 11 min | 18 min | 15 min | 29 min | 9 |
| 12 PM–1 PM | 10 min | 15 min | 14 min | 22 min | 13 |
| 1 PM–2 PM | 12 min | 17 min | 18 min | 28 min | 18 |
| 2 PM–3 PM | 15 min | 22 min | 22 min | 40 min | 20 |
| 3 PM–4 PM | 14 min | 21 min | 20 min | 39 min | 19 |
| 4 PM–5 PM | 14 min | 20 min | 18 min | 34 min | 17 |
| 5 PM–6 PM | 13 min | 20 min | 18 min | 34 min | 15 |
| 6 PM–7 PM | 12 min | 19 min | 17 min | 32 min | 15 |
| 7 PM–8 PM | 14 min | 21 min | 18 min | 34 min | 15 |
| 8 PM–9 PM | 16 min | 25 min | 22 min | 44 min | 16 |
| 9 PM–10 PM | 14 min | 23 min | 21 min | 38 min | 11 |
| 10 PM–11 PM | 12 min | 20 min | 18 min | 30 min | 11 |
| 11 PM–12 AM | 10 min | 17 min | 14 min | 25 min | 11 |
US passports: clearing in the 5 AM–6 AM hour typically takes 19 min, against 10 min in the 12 PM–1 PM hour — 9 min between the slowest and fastest of 19 measured hours.
All other passports: clearing in the 5 AM–6 AM hour typically takes 30 min, against 14 min in the 12 PM–1 PM hour — 16 min between the slowest and fastest of 19 measured hours.
The hour is when CBP processed the passenger, not when the aircraft landed — allow for the walk from the gate. Hours with fewer than 120 days of records are not listed rather than shown as an estimate, which is why a terminal’s quietest hours are usually absent. “Busy day” is the 90th percentile: one arrival in ten is worse than that. Booths are how many CBP had open, and they follow the queue rather than prevent it — the busiest hours are staffed hardest and are still the slowest.
Source: US Customs and Border Protection · 2024-08-28 to 2026-10-16 · These are CBP passport control waits for arriving international passengers — a different queue from TSA departure screening. CBP publishes them about two days in arrears, so every figure here describes what has been typical over 2024-08-28 to 2026-10-16, and none of it is a live queue or a forecast for your flight. US and non-US passengers are reported separately by CBP and are kept separate here, because they are separate halls. FlyerIntel publishes a terminal or an hour only where CBP filed at least 120 hourly records for it, and an hour-by-hour breakdown only where at least 6 hours clear that floor.
What to expect at BOS
How busy the airport is through the day, from scheduled departure volume.
Scheduled departures by hour
- 12 AM: no departures
- 1 AM: no departures
- 2 AM: no departures
- 3 AM: no departures
- 4 AM: fewer than one departure a day
- 5 AM: about 13 departures a day
- 6 AM: about 33 departures a day
- 7 AM: about 39 departures a day
- 8 AM: about 31 departures a day
- 9 AM: about 25 departures a day
- 10 AM: about 22 departures a day
- 11 AM: about 22 departures a day
- 12 PM: about 21 departures a day
- 1 PM: about 18 departures a day
- 2 PM: about 19 departures a day
- 3 PM: about 25 departures a day
- 4 PM: about 24 departures a day
- 5 PM: about 27 departures a day
- 6 PM: about 24 departures a day
- 7 PM: about 22 departures a day
- 8 PM: about 20 departures a day
- 9 PM: about 6 departures a day
- 10 PM: about 1 departure a day
- 11 PM: fewer than one departure a day
The busiest hour is 7 AM, with about 39 departures a day, against roughly 6 at 9 PM. That peak is also more punctual than a typical hour here: early banks fly aircraft that spent the night on the ground rather than ones inheriting the day’s delays.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Taxi-out runs from gate to wheels-up, averaged over departures and weighted by hour. Taxi-in runs from touchdown to gate.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 6.7 percentage points.
By month
- Jan: 76.0% on time
- Feb: 77.0% on time
- Mar: 79.6% on time
- Apr: 80.2% on time
- May: 77.4% on time
- Jun: 75.2% on time
- Jul: 69.7% on time
- Aug: 75.6% on time
- Sep: 78.0% on time
- Oct: 81.1% on time
- Nov: 83.3% on time
- Dec: 75.7% on time
July is historically the weakest month and November the strongest, a spread of 13.6 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Airlines at BOS
Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.
| Carrier | Departures | On time | Cancelled | Median delay |
|---|---|---|---|---|
| JetBlue B6 | 123,403 | 72.8% | 1.98% | -6 min |
| Republic Airways YX | 90,794 | 81.3% | 2.96% | -10 min |
| Delta Air Lines DL | 80,126 | 78.6% | 1.29% | -8 min |
| American Airlines AA | 51,334 | 79.5% | 1.87% | -11 min |
| United Airlines UA | 38,952 | 80.3% | 1.74% | -8 min |
| Southwest Airlines WN | 21,079 | 75.6% | 1.21% | -4 min |
| Spirit Airlines NK | 14,731 | 69.8% | 3.05% | -4 min |
| Alaska Airlines AS | 7,751 | 73.9% | 1.14% | -5 min |
| Envoy Air MQ | 6,094 | 78.7% | 1.81% | -8 min |
| Frontier Airlines F9 | 3,569 | 71.0% | 2.30% | -2 min |
| Allegiant Air G4 | 1,797 | 85.8% | 1.17% | -10 min |
| SkyWest Airlines OO | 703 | 77.5% | 3.27% | -5 min |
| Hawaiian Airlines HA | 536 | 68.6% | 1.12% | 3 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Carriers with fewer than 500 departures are not listed.
Routes from BOS
Ranked by FlyerIntel Route Reliability Score.
Most reliable
Busiest routes
| Destination | Flights | On time | Score |
|---|---|---|---|
| BOS → DCA Washington | 28,569 | 77.3% | 52 |
| BOS → LGA New York | 22,955 | 81.1% | 53 |
| BOS → ORD Chicago | 21,884 | 76.9% | 54 |
| BOS → JFK New York | 17,280 | 77.0% | 49 |
| BOS → PHL Philadelphia | 15,483 | 78.2% | 55 |
| BOS → ATL Atlanta | 15,469 | 78.5% | 64 |
| BOS → MCO Orlando | 14,916 | 70.6% | 43 |
| BOS → LAX Los Angeles | 14,317 | 77.4% | 63 |
| BOS → CLT Charlotte | 14,296 | 81.3% | 64 |
| BOS → SFO San Francisco | 14,232 | 74.6% | 61 |
| BOS → EWR Newark | 12,192 | 77.3% | 46 |
| BOS → BWI Baltimore | 12,072 | 79.8% | 64 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Only routes with at least 10,000 flights are ranked.
Reliability over time
On-time arrival rate for departures, by month.
- July 2023: 64.3% on time from 12,133 flights
- August 2023: 72.8% on time from 12,389 flights
- September 2023: 73.7% on time from 11,742 flights
- October 2023: 82.7% on time from 12,369 flights
- November 2023: 84.9% on time from 11,142 flights
- December 2023: 83.3% on time from 10,660 flights
- January 2024: 74.8% on time from 10,134 flights
- February 2024: 86.1% on time from 10,118 flights
- March 2024: 83.4% on time from 11,324 flights
- April 2024: 80.8% on time from 11,591 flights
- May 2024: 77.6% on time from 12,659 flights
- June 2024: 75.1% on time from 12,568 flights
- July 2024: 72.6% on time from 12,953 flights
- August 2024: 72.8% on time from 13,215 flights
- September 2024: 84.2% on time from 12,359 flights
- October 2024: 86.6% on time from 13,035 flights
- November 2024: 86.7% on time from 11,756 flights
- December 2024: 75.5% on time from 11,778 flights
- January 2025: 79.4% on time from 10,624 flights
- February 2025: 69.9% on time from 10,292 flights
- March 2025: 81.6% on time from 12,361 flights
- April 2025: 80.4% on time from 12,413 flights
- May 2025: 75.2% on time from 12,547 flights
- June 2025: 74.0% on time from 12,372 flights
- July 2025: 70.9% on time from 12,912 flights
- August 2025: 81.4% on time from 12,461 flights
- September 2025: 75.7% on time from 11,597 flights
- October 2025: 73.9% on time from 12,647 flights
- November 2025: 78.0% on time from 11,385 flights
- December 2025: 68.7% on time from 11,248 flights
- January 2026: 73.6% on time from 10,298 flights
- February 2026: 74.8% on time from 10,232 flights
- March 2026: 74.1% on time from 12,299 flights
- April 2026: 79.3% on time from 12,626 flights
- May 2026: 79.4% on time from 12,694 flights
- June 2026: 76.6% on time from 12,683 flights
- July 2026: 70.8% on time from 13,277 flights
Over the most recent 12 months (2025-08 to 2026-07), departures from BOS arrived on time 75.6% of the time, against 78.1% in the 12 months before — declining by 2.5 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Data and sources
Historical statistics
Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – July 2026, comprising 440,893 departures from BOS. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Full methodology · All data sources
Related research: The Day After the Holiday · The Least Reliable Hour of the Week · The Best Major Airports for a Tight Connection · Which Months Cancel the Most Flights
Analysis last recomputed
Embed this on your site
Updates on its own as new data comes in — paste this once, nothing to maintain.
<a href="https://flyerintel.com/airports/bos/"><img src="https://flyerintel.com/badge/airport/bos/" alt="Boston Logan International Airport on-time performance, from FlyerIntel"></a>Live conditions
Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.
Latest observation for BOS: METAR KBOS 180854Z 33003KT 10SM CLR 03/M04 A3051 RMK AO2 SLP331 T00281044 51021 $ (issued ).