Buffalo, NY · Airport profile
BUF
Buffalo Niagara International Airport
79.4% of departures from BUF arrived on time across 65,592 flights, July 2023 – July 2026. The weakest hour is 9 PM, at 61.7%. Late-arriving aircraft accounts for the most delay minutes.
BUF right now
Live conditions where a permitted source publishes them, and the historical record where none does.
Aviation weather is not currently a factor.
92.3% leave on time
05:00–05:59 local · 3,346 departures on record
When flights run late in this hour, most of the delay is attributed to the airline.
Historical pattern for BUF from US DOT BTS — not a live reading.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedForecast issued 05:20Z.
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 BUF, July 2023 – July 2026.
Better than 21% of major US airports covered by FlyerIntel (64 compared)
Calculated from 65,592 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Why flights are cancelled at BUF
Every cancellation carries a reason code filed by the airline that operated the flight. Departures, July 2023 – July 2026.
Extreme weather accounts for 58.6% of cancelled departures from BUF — about 1 in every 73 scheduled departures. That is close to the split across every airport FlyerIntel covers.
Share of cancellations
Of 1,534 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.
899 cancellations, 58.6% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
352 cancellations, 22.9% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
283 cancellations, 18.4% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
1,534 of 65,592 scheduled departures from BUF were cancelled. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
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; 1,534 were recorded at BUF.
Why flights run late at BUF
Where US DOT attributed the delay minutes on departures from BUF.
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 BUF. Only delays of 15 minutes or more are attributed.
Of the 12,238 departures from BUF that left 15 or more minutes late and have a known inbound aircraft, 67% followed a flight that landed 15 or more minutes late. The other 33% 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%; BUF’s is the 10th highest.
The late flight is the one the same aircraft flew into BUF 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 BUF 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 BUF
Departures from BUF by the weather at the airport in the hour they were scheduled to leave, July 2023 – July 2026.
18.9% of scheduled departures from BUF left in an hour of bad weather. 5.1% of them were cancelled, against 1.6% in normal conditions, and 70.4% of the ones that flew arrived on time, against 81.4%. Those hours held 41% of all cancelled departures. That is about 434 more cancellations than the normal-conditions rate would give.
Cancellations were highest in snow or ice hours: 7.7% of 5,820 departures, 4.9 times the normal rate.
Airlines filed 59% of BUF’s coded cancellations under extreme weather. By the weather at the airport in the scheduled hour, 41% 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 | 45,45369.4% of all | 1.6% | 80.5% | 81.4% | 12.0 min |
| Any bad weatherIFR or LIFR, or a thunderstorm, snow or ice, fog, heavy rain or high wind | 12,36518.9% of all | 5.1%3.2 times normal | 76.3% | 70.4%11.0 points below normal | 18.4 min |
| MVFRceiling 1,000 to 3,000 feet or visibility 3 to 5 miles | 10,11815.4% of all | 3.0%1.9 times normal | 79.5% | 78.3%3.1 points below normal | 14.2 min |
| IFRceiling 500 to 999 feet or visibility 1 to under 3 miles | 4,3536.6% of all | 5.6%3.6 times normal | 76.2% | 70.3%11.1 points below normal | 18.4 min |
| LIFRceiling under 500 feet or visibility under 1 mile | 2,5383.9% of all | 7.6%4.8 times normal | 76.5% | 68.6%12.8 points below normal | 21.9 min |
| Thunderstorma thunderstorm reported at the airport | 3660.6% of all | 6.3%4.0 times normal | 64.1% | 62.4%19.0 points below normal | 28.0 min |
| Snow or icesnow, snow grains, ice pellets, freezing rain or freezing drizzle | 5,8208.9% of all | 7.7%4.9 times normal | 73.7% | 60.4%21.0 points below normal | 21.9 min |
| Fogfog or freezing fog reported at the airport | 6050.9% of all | 7.4%4.7 times normal | 70.0% | 60.2%21.2 points below normal | 32.7 min |
| Heavy rainheavy rain reported at the airport | 3580.5% of all | 4.7%3.0 times normal | 72.1% | 73.2%8.2 points below normal | 19.2 min |
| High windwind of 25 knots or more, or gusts of 30 knots or more | 3,0234.6% of all | 7.3%4.6 times normal | 74.2% | 71.7%9.7 points below normal | 17.5 min |
| Low ceilinga broken or overcast layer under 1,000 feet | 4,7297.2% of all | 4.4%2.8 times normal | 78.9% | 75.1%6.3 points below normal | 17.5 min |
| Low visibilityvisibility under 3 miles | 4,1926.4% of all | 8.4%5.3 times normal | 73.6% | 63.6%17.8 points below normal | 23.4 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 BUF 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 99.9% 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 BUF
Cancellations by airline in hours of bad weather at BUF, against the other carriers in the same months, July 2023 – July 2026.
19% of the weather-matched departures from BUF left in an hour of bad weather at the airport. 5.1% of them were cancelled. That is 3.2 times the 1.6% in normal hours. No one carrier holds most of them; 7 airlines have enough to compare.
Compared with the other carriers at BUF in the same months, Delta Air Lines (2.5% cancelled against 5.3% for the others; below them in normal hours too) cancelled the fewest in bad weather and Republic Airways (7.3% cancelled against 4.9% for the others; above them in normal hours too) the most. 2 more airlines are also clearly apart from the others.
Airlines in bad weather at BUF
Scheduled departures, July 2023 – July 2026| Airline | Bad-weather departures | Cancelled | Other carriers | Normal hours |
|---|---|---|---|---|
| Delta Air Lines | 1,1209% of bad-weather | 2.5%below the others | 5.3% | 1.2%others 1.8% |
| Southwest Airlines | 3,42128% of bad-weather | 3.8%below the others | 5.7% | 0.5%others 1.8% |
| American Airlines | 1,0749% of bad-weather | 4.5% | 5.6% | 1.2%others 1.8% |
| Frontier Airlines | 5865% of bad-weather | 4.2% | 4.4% | 2.5%others 1.4% |
| JetBlue | 1,99516% of bad-weather | 6.0%above the others | 4.9% | 1.7%others 1.5% |
| SkyWest Airlines | 5765% of bad-weather | 7.8% | 6.2% | 1.2%others 1.6% |
| Republic Airways | 1,70714% of bad-weather | 7.3%above the others | 4.9% | 2.9%others 1.4% |
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 7 listed airlines flew 85% of the bad-weather departures at BUF; 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. SkyWest Airlines 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 BUF
Time on the ground between one flight and the next of the same aircraft at BUF, and what a late arrival does to the next departure, July 2023 – July 2026.
The median turn at BUF is scheduled for 46 minutes on the ground and takes 53 minutes, against 56 minutes and 63 minutes across all airports. Aircraft are given less time on the ground here than at the typical airport. The 7 minutes by which the typical turn runs over its schedule are about what it is across all airports. 21.4% 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 (9,496 turns here, 60 minutes late on average), 60% of the turns were finished in no more than the scheduled ground time, against 68% across all airports. 79% of those flights left 15 or more minutes late, against 72%. After an aircraft that landed on time, 9% did (all airports 11%).
Given the turn lengths scheduled here, the network’s rates would give 62% finished in the schedule and 77% leaving late. BUF finishes fewer late turns in the schedule than the network would, but lateness is passed on about as often. 40% of its late-inbound turns had a scheduled turn of 45 to 59 minutes, against 31% across all airports.
Turns at BUF against all airports
44,397 turns, July 2023 – July 2026| Measure | BUF | All airports | All airports, same turn lengths |
|---|---|---|---|
| Median scheduled turn | 46 min | 56 min | — |
| Median actual turn | 53 min | 63 min | — |
| Turns that began with an aircraft 15+ minutes late | 21% | 19% | — |
| Late turns finished within the schedule | 60% | 68% | 62% |
| Late inbound that left 15+ minutes late | 79% | 72% | 77% |
| On-time inbound that left 15+ minutes late | 9% | 11% | — |
The last column is the network’s rate at the turn lengths scheduled at BUF, 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 BUF with its next departure from it by tail number; the aircraft is never named. These 44,397 turns are 68% of the flights that left BUF 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 BUF 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 BUF apart
Where BUF’s hours, months, airlines and taxi time differ most from the other airports, July 2023 – July 2026.
Flights scheduled to leave BUF at 10 AM arrive on time 86.3% of the time, 3.4 points better than the 82.9% for that hour at the other airports.
9 PM is where BUF falls furthest behind the rest: 61.7% of its 9 PM departures arrive on time, 9.5 points below the 71.2% for that hour elsewhere.
May treats BUF better than it treats the rest of the country: 81.6% on time against 75.5% elsewhere, 6.1 points ahead.
January is BUF’s hardest month against the field, 72.1% on time to 78.8% elsewhere, 6.7 points short.
JetBlue does better out of BUF than anywhere else it flies: 76.6% on time here, 72.4% on its other departures, 4.2 points apart.
PSA Airlines’ departures from BUF arrive on time 69.8% of the time, 6.1 points worse than the 75.9% the same airline manages at its other airports.
Taxi-out at BUF averages 15.1 minutes, 3.6 minutes less than the 18.7 minutes elsewhere.
BUF against the other airports
July 2023 – July 2026| Measure | BUF | Elsewhere | Gap | Flights behind it |
|---|---|---|---|---|
| Hour: 10 AM departures | 86.3% | 82.9% | +3.4 pts | 3,980 here, 1,116,230 elsewhere |
| Hour: 9 PM departures | 61.7% | 71.2% | −9.5 pts | 397 here, 683,914 elsewhere |
| Month: May | 81.6% | 75.5% | +6.1 pts | 5,657 here, 1,481,676 elsewhere |
| Month: January | 72.1% | 78.8% | −6.7 pts | 3,971 here, 1,285,820 elsewhere |
| Airline: JetBlue | 76.6% | 72.4% | +4.2 pts | 10,402 here, 715,912 elsewhere |
| Airline: PSA Airlines | 69.8% | 75.9% | −6.1 pts | 2,616 here, 688,427 elsewhere |
| Taxi-out: Departures | 15.1 min | 18.7 min | −3.6 min | 64,094 here, 17,566,015 elsewhere |
"Elsewhere" is every other covered airport together, taken from the same aggregates as this page with BUF’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 BUF
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 87.7% of the time, against 60.3% for 9 PM–5 AM departures — a gap of 27.4 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time.
Thursday 5–6 AM was the most reliable slot at BUF (92.2% on time, 531 flights) and Sunday 5–6 PM the least (61.8%, 924 flights).
Hour of departure matters more than day of the week: hourly averages sit a typical 8.2 points from the airport-wide rate, weekday averages 1.9 points.
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
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| 5 AM–6 AM | |||||||
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| 12 PM–1 PM | |||||||
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| 8 PM–9 PM |
On-time rate, % · stronger color, fewer on time
- 60–64
- 65–69
- 70–74
- 75–79
- 80–84
- 85–89
- 90–94
- 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 after 9 PM (494 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 | 91.2% on time536 flights | 92.6% on time418 flights | 90.0% on time423 flights | 92.2% on time531 flights | 91.2% on time544 flights | 88.5% on time491 flights | 90.6% on time403 flights |
| 6 AM–7 AM | 87.7% on time1,586 flights | 88.1% on time1,555 flights | 89.3% on time1,540 flights | 86.6% on time1,571 flights | 88.2% on time1,579 flights | 87.0% on time1,541 flights | 86.6% on time1,522 flights |
| 7 AM–8 AM | 87.3% on time686 flights | 90.5% on time697 flights | 88.8% on time709 flights | 86.0% on time696 flights | 86.6% on time699 flights | 86.6% on time716 flights | 87.5% on time707 flights |
| 8 AM–9 AM | 85.6% on time463 flights | 86.2% on time478 flights | 87.3% on time465 flights | 83.9% on time433 flights | 84.0% on time455 flights | 81.7% on time429 flights | 82.3% on time449 flights |
| 9 AM–10 AM | 87.7% on time248 flights | 89.7% on time258 flights | 86.7% on time252 flights | 85.4% on time249 flights | 83.5% on time252 flights | 83.6% on time287 flights | 86.2% on time291 flights |
| 10 AM–11 AM | 86.9% on time587 flights | 88.0% on time602 flights | 88.0% on time611 flights | 87.0% on time617 flights | 84.9% on time599 flights | 85.6% on time499 flights | 83.3% on time536 flights |
| 11 AM–12 PM | 84.4% on time693 flights | 84.3% on time663 flights | 83.5% on time663 flights | 82.9% on time742 flights | 81.0% on time699 flights | 79.0% on time524 flights | 80.7% on time681 flights |
| 12 PM–1 PM | 78.2% on time758 flights | 81.3% on time685 flights | 82.9% on time676 flights | 80.5% on time739 flights | 77.3% on time738 flights | 77.2% on time668 flights | 77.1% on time713 flights |
| 1 PM–2 PM | 73.7% on time358 flights | 81.4% on time430 flights | 81.0% on time414 flights | 78.4% on time359 flights | 72.3% on time372 flights | 78.3% on time499 flights | 74.2% on time409 flights |
| 2 PM–3 PM | 74.0% on time405 flights | 79.3% on time288 flights | 78.1% on time336 flights | 73.6% on time357 flights | 75.4% on time381 flights | 74.2% on time364 flights | 76.4% on time320 flights |
| 3 PM–4 PM | 75.7% on time379 flights | 79.8% on time390 flights | 74.9% on time366 flights | 76.0% on time361 flights | 72.8% on time376 flights | 72.8% on time489 flights | 73.7% on time403 flights |
| 4 PM–5 PM | 69.0% on time501 flights | 74.8% on time489 flights | 77.6% on time478 flights | 69.6% on time498 flights | 71.4% on time520 flights | 70.7% on time529 flights | 69.3% on time483 flights |
| 5 PM–6 PM | 66.8% on time899 flights | 70.9% on time865 flights | 67.8% on time874 flights | 64.4% on time883 flights | 65.9% on time891 flights | 71.7% on time753 flights | 61.8% on time924 flights |
| 6 PM–7 PM | 68.8% on time629 flights | 73.7% on time564 flights | 73.5% on time558 flights | 67.4% on time609 flights | 68.8% on time606 flights | 64.7% on time485 flights | 62.7% on time615 flights |
| 7 PM–8 PM | 69.6% on time614 flights | 76.6% on time522 flights | 74.8% on time519 flights | 66.8% on time616 flights | 71.0% on time605 flights | 71.1% on time557 flights | 62.6% on time681 flights |
| 8 PM–9 PM | 66.5% on time227 flights | 72.6% on time139 flights | 66.4% on time138 flights | 68.2% on time205 flights | 63.6% on time236 flights | 66.7% on time205 flights | 60.1% on time273 flights |
By departure window
All days combinedBy departure hour
All days combined- 12 AM to 4 AM: too few flights to score
- 5 AM: 90.9% on time from 3,346 flights
- 6 AM: 87.6% on time from 10,894 flights
- 7 AM: 87.6% on time from 4,910 flights
- 8 AM: 84.5% on time from 3,172 flights
- 9 AM: 86.1% on time from 1,837 flights
- 10 AM: 86.3% on time from 4,051 flights
- 11 AM: 82.4% on time from 4,665 flights
- 12 PM: 79.2% on time from 4,977 flights
- 1 PM: 77.2% on time from 2,841 flights
- 2 PM: 75.7% on time from 2,451 flights
- 3 PM: 75.0% on time from 2,764 flights
- 4 PM: 71.7% on time from 3,498 flights
- 5 PM: 66.9% on time from 6,089 flights
- 6 PM: 68.5% on time from 4,066 flights
- 7 PM: 70.0% on time from 4,114 flights
- 8 PM: 65.7% on time from 1,423 flights
- 9 PM: 61.7% on time from 415 flights
- 10 PM to 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.
What to expect at BUF
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: no departures
- 5 AM: about 3 departures a day
- 6 AM: about 10 departures a day
- 7 AM: about 4 departures a day
- 8 AM: about 3 departures a day
- 9 AM: about 2 departures a day
- 10 AM: about 4 departures a day
- 11 AM: about 4 departures a day
- 12 PM: about 4 departures a day
- 1 PM: about 3 departures a day
- 2 PM: about 2 departures a day
- 3 PM: about 2 departures a day
- 4 PM: about 3 departures a day
- 5 PM: about 5 departures a day
- 6 PM: about 4 departures a day
- 7 PM: about 4 departures a day
- 8 PM: about 1 departure a day
- 9 PM: fewer than one departure a day
- 10 PM: fewer than one departure a day
- 11 PM: no departures
The busiest hour is 6 AM, with about 10 departures a day, against roughly 0 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
Tuesday is historically the most reliable day and Sunday the least, a gap of 6.2 percentage points.
By month
- Jan: 72.1% on time
- Feb: 78.6% on time
- Mar: 79.6% on time
- Apr: 85.0% on time
- May: 81.6% on time
- Jun: 77.7% on time
- Jul: 71.3% on time
- Aug: 76.9% on time
- Sep: 84.4% on time
- Oct: 85.9% on time
- Nov: 85.2% on time
- Dec: 74.4% on time
July is historically the weakest month and October the strongest, a spread of 14.6 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Airlines at BUF
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 |
|---|---|---|---|---|
| Southwest Airlines WN | 16,568 | 81.2% | 1.18% | -6 min |
| JetBlue B6 | 10,692 | 76.6% | 2.54% | -8 min |
| Republic Airways YX | 8,881 | 83.4% | 4.08% | -10 min |
| American Airlines AA | 6,395 | 77.3% | 1.80% | -5 min |
| Delta Air Lines DL | 6,213 | 82.2% | 1.37% | -9 min |
| Frontier Airlines F9 | 3,233 | 72.0% | 3.03% | -7 min |
| Endeavor Air 9E | 3,142 | 86.0% | 3.31% | -15 min |
| United Airlines UA | 3,115 | 80.8% | 1.64% | -4 min |
| PSA Airlines OH | 2,771 | 69.8% | 5.30% | -2 min |
| SkyWest Airlines OO | 2,546 | 75.4% | 2.59% | -7 min |
| Envoy Air MQ | 2,036 | 77.0% | 1.92% | -7 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Carriers with fewer than 500 departures are not listed.
Reliability over time
On-time arrival rate for departures, by month.
- July 2023: 66.2% on time from 1,789 flights
- August 2023: 75.6% on time from 1,878 flights
- September 2023: 79.5% on time from 1,879 flights
- October 2023: 85.3% on time from 1,962 flights
- November 2023: 87.9% on time from 1,782 flights
- December 2023: 85.1% on time from 1,582 flights
- January 2024: 70.1% on time from 1,579 flights
- February 2024: 86.7% on time from 1,572 flights
- March 2024: 81.6% on time from 1,838 flights
- April 2024: 85.3% on time from 1,786 flights
- May 2024: 80.2% on time from 1,878 flights
- June 2024: 77.4% on time from 1,916 flights
- July 2024: 72.7% on time from 2,025 flights
- August 2024: 76.2% on time from 2,067 flights
- September 2024: 87.7% on time from 1,980 flights
- October 2024: 90.0% on time from 2,032 flights
- November 2024: 89.5% on time from 1,758 flights
- December 2024: 73.1% on time from 1,735 flights
- January 2025: 74.8% on time from 1,396 flights
- February 2025: 71.8% on time from 1,389 flights
- March 2025: 82.4% on time from 1,688 flights
- April 2025: 86.9% on time from 1,722 flights
- May 2025: 82.1% on time from 1,899 flights
- June 2025: 76.3% on time from 1,771 flights
- July 2025: 73.8% on time from 1,963 flights
- August 2025: 78.9% on time from 1,886 flights
- September 2025: 85.9% on time from 1,682 flights
- October 2025: 82.2% on time from 1,870 flights
- November 2025: 78.0% on time from 1,742 flights
- December 2025: 65.2% on time from 1,649 flights
- January 2026: 71.3% on time from 1,354 flights
- February 2026: 76.0% on time from 1,388 flights
- March 2026: 74.5% on time from 1,704 flights
- April 2026: 82.6% on time from 1,699 flights
- May 2026: 82.5% on time from 1,936 flights
- June 2026: 79.4% on time from 1,865 flights
- July 2026: 71.9% on time from 1,951 flights
Over the most recent 12 months (2025-08 to 2026-07), departures from BUF arrived on time 77.6% of the time, against 80.7% in the 12 months before — declining by 3.1 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 65,592 departures from BUF. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Full methodology · All data sources
Related research: Where a Late Aircraft Gets Its Time Back · 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
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<a href="https://flyerintel.com/airports/buf/"><img src="https://flyerintel.com/badge/airport/buf/" alt="Buffalo Niagara 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 BUF: METAR KBUF 180854Z 16005KT 10SM CLR 03/01 A3048 RMK AO2 SLP328 T00330011 53009 $ (issued ).