PHL to BUF flight delays & on-time performance
Nonstop flights from Philadelphia International Airport to Buffalo Niagara International Airport · 279 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHL or BUF right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Philadelphia (PHL) to Buffalo (BUF) arrived on time 71% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 5% were cancelled, and 10% arrived an hour or more late.
- Republic Airways was the most punctual airline here (77% on time); PSA Airlines was the least (66%).
- Departures scheduled around 10am did best (88% on time); around 9pm did worst (69%).
- Wednesday was the most reliable day to fly (82% on time) and Sunday the least (64%).
- The largest source of delay minutes was late-arriving aircraft (69%).
Which airline is most on time from PHL 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. | 77% | 4.5% | 23 min | 9.4% | 133 |
| PSA AirlinesRegional airline operating American Eagle flights. | 66% | 5.2% | 31 min | 10.9% | 116 |
| American Airlines | 45% | 8.3% | 23 min | 9.1% | 12 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am88%24 flights
- 5pm70%23 flights
- 9pm69%175 flights
- 10pm77%13 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday67%10.0% cancelled
- Tuesday82%0.0% cancelled
- Wednesday82%10.8% cancelled
- Thursday68%2.9% cancelled
- Friday67%2.7% cancelled
- Saturday69%2.8% cancelled
- Sunday64%5.3% 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 aircraft69%
- Airline (crew, maintenance, cleaning, fueling)15%
- Air traffic control & airport congestion13%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather69%
- Airline (crew, maintenance, cleaning, fueling)15%
- Air traffic control & airport congestion15%
- Security0%
PHL to BUF: common questions
- How often are PHL to BUF flights on time?
- 71% 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 Philadelphia to Buffalo cancelled?
- 5.0% of scheduled flights were cancelled (13 of 261).
- How long are typical delays?
- Across all flights the average arrival delay was 27 min (early arrivals count as zero). Flights that were late arrived 89 min behind schedule on average, and 10.1% of flights were an hour or more late.
- How long is taxi time at PHL?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BUF to PHL — 82% on time
More flights from Philadelphia
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHL → BUF, nonstop flights by US airlines that report to the DOT. How we calculate this.