BUF to PHL flight delays & on-time performance
Nonstop flights from Buffalo Niagara International Airport to Philadelphia International Airport · 279 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BUF or PHL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Buffalo (BUF) to Philadelphia (PHL) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 3.4% were cancelled, and 10% arrived an hour or more late.
- Republic Airways was the most punctual airline here (85% on time); PSA Airlines was the least (79%).
- Departures scheduled around 6am did best (94% on time); around 6pm did worst (68%).
- Tuesday was the most reliable day to fly (88% on time) and Saturday the least (74%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (51%).
Which airline is most on time from BUF to PHL?
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. | 85% | 2.3% | 16 min | 7.7% | 133 |
| American Airlines | 82% | 8.3% | 20 min | 18.2% | 12 |
| PSA AirlinesRegional airline operating American Eagle flights. | 79% | 4.2% | 29 min | 11.5% | 118 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am82%126 flights
- 6am94%56 flights
- 12pm86%28 flights
- 4pm60%10 flights
- 6pm68%22 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%9.8% cancelled
- Tuesday88%2.3% cancelled
- Wednesday84%0.0% cancelled
- Thursday87%6.1% cancelled
- Friday81%0.0% cancelled
- Saturday74%2.6% cancelled
- Sunday81%3.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)51%
- Late-arriving aircraft38%
- Air traffic control & airport congestion11%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather67%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion11%
- Security0%
BUF to PHL: common questions
- How often are BUF to PHL flights on time?
- 82% 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 Buffalo to Philadelphia cancelled?
- 3.4% of scheduled flights were cancelled (9 of 263).
- How long are typical delays?
- Across all flights the average arrival delay was 22 min (early arrivals count as zero). Flights that were late arrived 116 min behind schedule on average, and 9.8% of flights were an hour or more late.
- How long is taxi time at BUF?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHL to BUF — 71% on time
More flights from Buffalo
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BUF → PHL, nonstop flights by US airlines that report to the DOT. How we calculate this.