BOS to BUF flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Buffalo Niagara International Airport · 395 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or BUF right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Buffalo (BUF) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3% were cancelled, and 10% arrived an hour or more late.
- Republic Airways was the most punctual airline here (84% on time); JetBlue was the least (72%).
- Departures scheduled around 7am did best (91% on time); around 5pm did worst (54%).
- Saturday was the most reliable day to fly (82% on time) and Thursday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (62%).
Which airline is most on time from BOS to BUF?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 84% | 2.6% | 11 min | 5.7% | 305 |
| Envoy AirRegional airline operating American Eagle flights. | 83% | 0.0% | 13 min | 6.9% | 72 |
| JetBlue | 72% | 3.4% | 20 min | 12.3% | 918 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am91%85 flights
- 8am83%125 flights
- 9am82%105 flights
- 10am78%41 flights
- 11am87%133 flights
- 12pm84%59 flights
- 1pm88%60 flights
- 2pm91%35 flights
- 3pm77%86 flights
- 4pm79%73 flights
- 5pm54%120 flights
- 6pm64%36 flights
- 7pm63%160 flights
- 8pm69%117 flights
- 10pm55%50 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%6.6% cancelled
- Tuesday78%5.1% cancelled
- Wednesday77%1.7% cancelled
- Thursday68%1.0% cancelled
- Friday75%1.0% cancelled
- Saturday82%2.8% cancelled
- Sunday73%2.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft62%
- Airline (crew, maintenance, cleaning, fueling)24%
- Air traffic control & airport congestion10%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather51%
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)15%
- Security0%
BOS to BUF: common questions
- How often are BOS to BUF flights on time?
- 75% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Boston to Buffalo cancelled?
- 3.0% of scheduled flights were cancelled (39 of 1,295).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 70 min behind schedule on average, and 10.4% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BUF to BOS — 76% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → BUF, nonstop flights by US airlines that report to the DOT. How we calculate this.