Buffalo (BUF) to Boston (BOS): On-Time Performance
Data through July 2026
When you fly BUF to BOS matters as much as anything else about the booking: the route swung from 92% on-time in October 2024 to just 55% in January 2026. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 61%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 2.0%
- Flights/day
- 3.5
- last 12 months
- Duration
- 1h 28m
- scheduled
- Distance
- 395 mi
Best airline from BUF to BOS
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 86% | 11 min | 2.6% | 305 |
| JetBlue Airways | 77% | 18 min | 2.0% | 2,005 |
| Envoy Air | 76% | 15 min | 0.0% | 71 |
Monthly on-time trend
Best time to fly from BUF to BOS
Aim for departures around 7 a.m. (91% on-time); avoid 9 p.m. departures (41%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 18 min |
| Tuesday | 80% | 14 min |
| Wednesday | 81% | 19 min |
| Thursday | 75% | 19 min |
| Friday | 75% | 17 min |
| Saturdaybest | 83% | 13 min |
| Sunday | 78% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations18%
- National airspace system36%
- Weather1%
Frequently asked questions
- How often are flights from BUF to BOS delayed?
- 22% of BUF–BOS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 17 minutes.
- Which airline is most reliable from BUF to BOS?
- Republic Airways has the best on-time record on this route at 86%, based on 305 flights. 3 airlines flew BUF–BOS frequently enough to compare in this period.
- What is the best time of day to fly from BUF to BOS?
- Departures around 7 a.m. have the best record (91% on-time), while departures around 9 p.m. have the worst (41%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BUF to BOS?
- The scheduled BUF–BOS flight time averages 1h 28m over 395 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are BUF to BOS flights cancelled?
- 2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from BUF to BOS?
- January 2026 was the roughest month in this dataset, with only 55% of arrivals on time. The best was October 2024 at 92%. If your dates are flexible, that 37-point gap is worth planning around.
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Based on 2,381 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.