Route profile
BOS→CLT
Flight reliability, delays and best times to fly from Boston to Charlotte, 728 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 46% of comparable major US routes (4,598 compared)
Calculated from 14,296 flights. How this is calculated
BOS → CLT arrives on time 81.3% of the time; the return trip, CLT → BOS, arrives on time 74.3% of the time, a 7.1-point gap between the two directions of the same city pair.
BOS → CLT spends 31.4 minutes on the ground on a 728-mile trip: 20.3 minutes from pushback to wheels-up at BOS and 11.1 minutes from touchdown to gate at CLT.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
The airline matters unusually much on this route, a wider carrier-to-carrier gap than 92% of 2,692 comparable routes.
American Airlines arrived on time 82.3% of the time, against 63.4% for Spirit Airlines, flying the exact same route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 2,692 in the comparison.
Why BOS → CLT flights are cancelled
July 2023 – July 2026
BOS → CLT cancelled 286 of 14,296 scheduled flights — about 1 in every 50. The reason filed most often was extreme weather, 62.9% of the cancellations coded on this route — about 1 in every 79 scheduled flights.
Share of cancellations
Of 286 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.
180 cancellations, 62.9% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
55 cancellations, 19.2% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
51 cancellations, 17.8% 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.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
286 coded cancellations were recorded on BOS → CLT; the section appears from 50.
When it goes wrong
July 2023 – July 2026
43 min late
against a median of 12 min early
Percentiles over 14,296 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at CLT after arriving from BOS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 30% | High risk |
| 45 min | 18% | High risk |
| 60 min | 13% | Some risk |
| 90 min | 7.6% | Some risk |
| 120 min | 4.9% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 2.00% of the time and diverts 0.13% of the time, which a late arrival never shows up in.
Chance of missing is the share of 13,992 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 43 minutes late (90th-percentile gate arrival delay), over 14,296 operations.
Any other layover length: connection checker.
Best time to fly
BOS → CLT flights departing 5–9 AM arrived on time 90.0% of the time, against 65.5% for 6–9 PM departures, a gap of 24.5 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (BOS).
Hour of departure matters more than day of the week: hourly averages sit a typical 9.2 points from the route-wide rate, weekday averages 2.2 points.
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On-time rate, % · stronger color, fewer on time
- 50–59
- 60–69
- 70–79
- 80–89
- 90–99
- Fewer than 120 flights, not scored
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.
No slot is named best or worst: too few reach 500 flights. Departures after 8 PM (317 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 | 118 flights, too few to score | 109 flights, too few to score | 113 flights, too few to score | 93.9% on time133 flights | 95.8% on time122 flights | 94.3% on time124 flights | 93.5% on time128 flights |
| 6 AM–7 AM | 95.7% on time166 flights | 92.3% on time171 flights | 90.9% on time179 flights | 95.3% on time150 flights | 91.8% on time160 flights | 115 flights, too few to score | 91.4% on time120 flights |
| 7 AM–8 AM | 86.4% on time199 flights | 91.3% on time188 flights | 89.8% on time179 flights | 89.4% on time211 flights | 88.5% on time204 flights | 90.4% on time189 flights | 85.9% on time196 flights |
| 8 AM–9 AM | 83.2% on time172 flights | 84.7% on time168 flights | 86.8% on time160 flights | 86.1% on time167 flights | 85.1% on time170 flights | 80.9% on time154 flights | 88.9% on time150 flights |
| 9 AM–10 AM | 80.4% on time168 flights | 87.8% on time133 flights | 85.1% on time143 flights | 86.7% on time144 flights | 89.3% on time163 flights | 90.5% on time173 flights | 86.5% on time150 flights |
| 10 AM–11 AM | 84.9% on time148 flights | 84.0% on time126 flights | 86.2% on time139 flights | 78.2% on time156 flights | 83.2% on time150 flights | 87.0% on time131 flights | 87.2% on time151 flights |
| 11 AM–12 PM | 86.9% on time177 flights | 89.5% on time174 flights | 84.3% on time173 flights | 85.3% on time163 flights | 86.1% on time169 flights | 80 flights, too few to score | 81.9% on time168 flights |
| 12 PM–1 PM | 86 flights, too few to score | 86 flights, too few to score | 103 flights, too few to score | 100 flights, too few to score | 93 flights, too few to score | 98 flights, too few to score | 104 flights, too few to score |
| 1 PM–2 PM | 85 flights, too few to score | 72 flights, too few to score | 61 flights, too few to score | 80 flights, too few to score | 79 flights, too few to score | 73 flights, too few to score | 79 flights, too few to score |
| 2 PM–3 PM | 81.3% on time217 flights | 84.8% on time187 flights | 87.8% on time199 flights | 77.3% on time207 flights | 74.5% on time213 flights | 117 flights, too few to score | 78.0% on time206 flights |
| 3 PM–4 PM | 49 flights, too few to score | 71 flights, too few to score | 53 flights, too few to score | 46 flights, too few to score | 55 flights, too few to score | 29 flights, too few to score | 50 flights, too few to score |
| 4 PM–5 PM | 78.5% on time137 flights | 77.0% on time141 flights | 70.8% on time138 flights | 65.7% on time141 flights | 63.6% on time144 flights | 115 flights, too few to score | 68.7% on time149 flights |
| 5 PM–6 PM | 80 flights, too few to score | 77 flights, too few to score | 84 flights, too few to score | 64 flights, too few to score | 70 flights, too few to score | 77.5% on time135 flights | 70 flights, too few to score |
| 6 PM–7 PM | 58.0% on time123 flights | 86 flights, too few to score | 105 flights, too few to score | 52.3% on time133 flights | 119 flights, too few to score | 106 flights, too few to score | 61.2% on time121 flights |
| 7 PM–8 PM | 69.8% on time188 flights | 70.0% on time172 flights | 75.2% on time171 flights | 61.4% on time190 flights | 67.0% on time189 flights | 57 flights, too few to score | 64.5% on time182 flights |
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 94.5% on time from 847 flights
- 6 AM: 93.2% on time from 1,061 flights
- 7 AM: 88.8% on time from 1,366 flights
- 8 AM: 85.1% on time from 1,141 flights
- 9 AM: 86.6% on time from 1,074 flights
- 10 AM: 84.3% on time from 1,001 flights
- 11 AM: 86.1% on time from 1,104 flights
- 12 PM: 84.1% on time from 670 flights
- 1 PM: 81.1% on time from 529 flights
- 2 PM: 80.5% on time from 1,346 flights
- 3 PM: 66.9% on time from 353 flights
- 4 PM: 71.0% on time from 965 flights
- 5 PM: 74.9% on time from 580 flights
- 6 PM: 61.6% on time from 793 flights
- 7 PM: 67.9% on time from 1,149 flights
- 8 PM: 67.1% on time from 170 flights
- 9 PM to 11 PM: too few flights to score
Why BOS → CLT runs late
July 2023 – July 2026
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 BOS → CLT. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on BOS → CLT, at 42.6%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 90.0% of the time and 6–9 PM departures 65.5%.
How this route holds up in bad weather
July 2023 – July 2026
Bad weather raises cancellations by a similar amount at both ends of BOS to CLT: 3.9 times the normal rate at BOS and 4.6 times at CLT. Cancelled in bad weather against normal hours: BOS 5.3% against 1.4%, CLT 5.7% against 1.2%. Flights that did leave BOS in bad weather arrived on time 65.1% of the time, against 79.7% in normal hours.
Bad weather and normal hours at the airports
Scheduled departures, July 2023 – July 2026| Departures from | BOS | CLT |
|---|---|---|
| Cancelled in bad weather | 5.3% | 5.7% |
| Cancelled in normal hours | 1.4% | 1.2% |
| Arrived on time, bad weather | 65.1% | 63.5% |
| Arrived on time, normal hours | 79.7% | 75.9% |
| Departures in bad weather | 60,840 | 55,311 |
Of the carriers on this route, American Airlines (4.7% cancelled against 5.5% for the other carriers at BOS) cancelled the fewest departures from BOS in bad weather and Spirit Airlines (7.8% cancelled against 4.4% for the other carriers at BOS) the most.
This route’s airlines in bad weather at BOS
All departures from BOS| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| American Airlines | 6,964 | 4.7%below the others | 5.5% |
| JetBlue | 17,332 | 5.4%about level | 5.1% |
| Republic Airways | 12,581 | 8.1%above the others | 5.0% |
| Spirit Airlines | 2,112 | 7.8%above the others | 4.4% |
These are airport figures, not route figures: every scheduled departure from BOS and CLT, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from BOS on every route.
Weather source and limits. In full: BOS (airlines), CLT, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| American Airlines | 8,620 | 82.3% | 1.64% | -13 min | 7.7% |
| Republic Airways | 4,104 | 82.3% | 2.12% | -10 min | 6.2% |
| JetBlue | 933 | 79.1% | 2.04% | -10 min | 9.2% |
| Spirit Airlines | 483 | 63.4% | 6.63% | -3 min | 16.0% |
American Airlines flew 61.0% of the 14,140 flights listed. Spirit Airlines cancelled 6.63% of its flights here against 1.64% for American Airlines.
American Airlines arrived on time 18.9 percentage points more often than Spirit Airlines on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 5.2 percentage points.
By month
- Jan: 79.2%
- Feb: 83.9%
- Mar: 86.0%
- Apr: 86.1%
- May: 78.9%
- Jun: 82.1%
- Jul: 73.3%
- Aug: 78.0%
- Sep: 78.6%
- Oct: 84.6%
- Nov: 86.5%
- Dec: 81.7%
July is historically the weakest month and November the strongest, a spread of 13.2 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 69.3% from 415 flights
- August 2023: 73.8% from 436 flights
- September 2023: 76.4% from 420 flights
- October 2023: 87.8% from 449 flights
- November 2023: 85.3% from 402 flights
- December 2023: 82.1% from 392 flights
- January 2024: 77.1% from 357 flights
- February 2024: 89.7% from 351 flights
- March 2024: 85.5% from 409 flights
- April 2024: 82.3% from 453 flights
- May 2024: 73.5% from 502 flights
- June 2024: 81.0% from 460 flights
- July 2024: 73.9% from 465 flights
- August 2024: 75.1% from 483 flights
- September 2024: 85.2% from 469 flights
- October 2024: 87.5% from 489 flights
- November 2024: 89.8% from 402 flights
- December 2024: 79.9% from 374 flights
- January 2025: 80.3% from 355 flights
- February 2025: 77.8% from 332 flights
- March 2025: 87.7% from 376 flights
- April 2025: 86.6% from 373 flights
- May 2025: 79.1% from 399 flights
- June 2025: 77.3% from 355 flights
- July 2025: 73.2% from 359 flights
- August 2025: 87.1% from 353 flights
- September 2025: 71.8% from 318 flights
- October 2025: 76.8% from 370 flights
- November 2025: 84.0% from 347 flights
- December 2025: 83.3% from 331 flights
- January 2026: 80.6% from 291 flights
- February 2026: 83.6% from 275 flights
- March 2026: 84.7% from 327 flights
- April 2026: 90.6% from 339 flights
- May 2026: 86.2% from 355 flights
- June 2026: 88.2% from 352 flights
- July 2026: 77.1% from 361 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 82.9% against 81.8% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 14,296 BOS → CLT flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed