Airport month record
BOSMAR
Boston Logan International in March 2026
- Departures
- 12,299
- Month
- March 2026
- National, same month
- 75.7%
- Carriers
- 10
Historical statistics for March 2026, not live status or a forecast for this year’s March. For today’s conditions at BOS, see live FAA status.
BOS in March sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 75.7%. The late ones land a little over an hour behind schedule. That rests on 12,299 flights, of which American Airlines flew 1,339 at 82.7% on time.
American Airlines is the most reliable of the six carriers covered here at 82.7% on time across 1,339 flights.
Key figures
On time
74.1%
Arrivals under 15 minutes late, of 11,928 completed departures
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
2.69%
Nationally in March: 2.90%
Whole year
75.6%
BOS across all twelve months
These figures cover 12,299 departures from Boston Logan International in March 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
March next to BOS's other months
Against BOS's own year, March ran 2 points worse than the twelve-month rate of 75.6%, which makes it number eight of twelve months, best first. Either side of it, February ran 74.8% on time and April 79.3%, so a trip moved by a few weeks would have landed in a better stretch.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 | 12,912 | 70.9% | 82 min | 4.07% | C− |
| August 2025 | 12,461 | 81.4% | 69 min | 1.00% | B |
| September 2025 | 11,597 | 75.7% | 73 min | 1.35% | B |
| October 2025 | 12,647 | 73.9% | 75 min | 1.51% | C |
| November 2025 | 11,385 | 78.0% | 75 min | 2.76% | B |
| December 2025 | 11,248 | 68.7% | 71 min | 1.69% | C |
| January 2026 | 10,298 | 73.6% | 78 min | 7.50% | C− |
| February 2026 | 10,232 | 74.8% | 73 min | 8.15% | C− |
| March 2026 (this page) | 12,299 | 74.1% | 69 min | 2.69% | C |
| April 2026 | 12,626 | 79.3% | 62 min | 0.31% | B+ |
| May 2026 | 12,694 | 79.4% | 60 min | 0.61% | B+ |
| June 2026 | 12,683 | 76.6% | 72 min | 1.77% | B |
Departure window
The best time of day to leave BOS in March
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 26 points, against 13 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am2,477 flights85.3%
- 8am–11am2,402 flights82.0%
- 11am–2pm1,849 flights76.4%
- 2pm–5pm2,239 flights68.2%
- 5pm–8pm2,278 flights63.8%
- 8pm–5am1,054 flights59.2%
Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 59.2% on time, against 85.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 2,477 flights scheduled in it.
Across the week, Wednesday is the strongest day at 79.6% on time and Friday the weakest at 65.5%. 14 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at BOS in March
The choice of carrier is not cosmetic here. American Airlines arrives on time 82.7% of the time; JetBlue Airways manages 69.5%. Sample sizes sit next to every figure, because a two-point gap across 3,445 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| JetBlue Airways | 3,445 | 69.5% | 67 min | 1.63% | C |
| Republic Airways | 3,104 | 73.1% | 63 min | 4.45% | C− |
| Delta Air Lines | 2,133 | 78.6% | 70 min | 2.58% | B |
| American Airlines | 1,339 | 82.7% | 95 min | 2.32% | B |
| United Airlines | 1,014 | 82.5% | 86 min | 1.38% | B |
| Southwest Airlines | 533 | 70.3% | 53 min | 1.13% | C |
| Spirit Airlinesthin sample | 274 | 45.3% | 79 min | 10.95% | F− |
| Envoy Airthin sample | 220 | 80.2% | 68 min | 0.45% | B+ |
| Alaska Airlinesthin sample | 156 | 51.3% | 49 min | 0.00% | F+ |
| Frontier Airlinesthin sample | 54 | 63.0% | 60 min | 0.00% | D+ |
Republic Airways cancels 4.5% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Route by route
Busiest routes out of BOS in March
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| BOS to DCA · Washington | 809 | 71.3% | 71 min | 2.72% | C |
| BOS to LGA · New York | 616 | 66.0% | 68 min | 11.20% | C− |
| BOS to ORD · Chicago | 597 | 70.9% | 101 min | 6.37% | C− |
| BOS to JFK · New York | 517 | 69.2% | 60 min | 2.13% | C |
| BOS to MCO · Orlando | 488 | 68.7% | 81 min | 3.89% | C− |
| BOS to PHL · Philadelphia | 429 | 72.9% | 82 min | 1.17% | C |
| BOS to ATL · Atlanta | 403 | 80.2% | 66 min | 1.74% | B |
| BOS to LAX · Los Angeles | 390 | 81.4% | 81 min | 0.51% | B+ |
| BOS to FLL · Fort Lauderdale | 390 | 68.0% | 69 min | 4.62% | C− |
| BOS to EWR · Newarkthin sample | 352 | 78.2% | 62 min | 2.27% | B |
| BOS to CLT · Charlottethin sample | 327 | 84.7% | 67 min | 1.83% | B |
| BOS to RSW · Fort Myersthin sample | 326 | 59.7% | 65 min | 3.37% | D− |
| BOS to MIA · Miamithin sample | 325 | 78.2% | 68 min | 2.46% | B |
| BOS to SFO · San Franciscothin sample | 323 | 76.8% | 57 min | 0.00% | B+ |
| BOS to DEN · Denverthin sample | 300 | 75.8% | 52 min | 0.67% | B+ |
| BOS to TPA · Tampathin sample | 284 | 78.3% | 83 min | 2.46% | B |
| BOS to DFW · Dallas-Fort Worththin sample | 273 | 84.3% | 98 min | 1.47% | B |
| BOS to BWI · Baltimorethin sample | 266 | 82.7% | 48 min | 1.88% | B |
| BOS to PBI · West Palm Beachthin sample | 248 | 67.2% | 77 min | 2.82% | C |
| BOS to BNA · Nashvillethin sample | 234 | 75.1% | 61 min | 2.14% | B |
| BOS to RDU · Raleighthin sample | 224 | 73.9% | 88 min | 2.68% | C |
| BOS to SJU · San Juanthin sample | 204 | 67.5% | 61 min | 3.43% | C− |
| BOS to PHX · Phoenixthin sample | 198 | 86.3% | 107 min | 0.51% | A+ |
| BOS to DTW · Detroitthin sample | 181 | 83.7% | 92 min | 1.66% | B |
| BOS to CMH · Columbusthin sample | 178 | 78.7% | 79 min | 1.69% | B |
Delay causes
What held BOS up in March
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 214,000 reported delay minutes.
- 39%Late-arriving aircraft
- 31%National Airspace System
- 28%Carrier
- 2%Extreme weather
- 0%Security
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 214,000 reported delay minutes here, that single category outweighs weather by 20 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 214,468 reported delay minutes.
Cancellations run at 2.69%, against 2.90% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% of arrivals land a full hour or more behind schedule, against 9.5% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
What to do with this
Flying from BOS in March
For a March trip through BOS: expect 74.1% on time and 2.69% cancelled, going by March 2026. The 5am–8am window was the strongest part of the day.
Related
Where to go next
- Boston Logan International (BOS), the whole year
- BOS in July70.9%
- BOS in August81.4%
- BOS in September75.7%
- BOS in October73.9%
- BOS in November78.0%
- BOS in December68.7%
- BOS in January73.6%
- BOS in February74.8%
- BOS in April79.3%
- BOS in May79.4%
- BOS in June76.6%
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.