Best Time to Fly BUF to PHL: On-Time Stats by Hour & Airline
Buffalo Niagara International → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
263 flights were scheduled from Buffalo (BUF) to Philadelphia (PHL) in the last 12 months, and 81.9% of those that flew arrived on time, 4.3 points above the US average of 77.6%.
Republic Airways was the most punctual of the 2 airlines on the route at 84.6%, while PSA Airlines trailed at 78.8%.
May has been the best month (90% on time) and Friday the weakest day of the week (76%).
3.4% of flights were cancelled, versus 1.8% nationally.
BUF to PHL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 84.6% | 101 min | 2.3% | 133 |
| PSA Airlines | 78.8% | 129 min | 4.2% | 118 |
| American Airlines | Limited data | 12 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BUF to PHL
On-time arrival % by scheduled departure hour (local time), 525 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 83.8% | 5.3% | 150 |
| 6am–7am | 84.1% | 2.2% | 135 |
| 7am–8am | Limited data | 5 | |
| 8am–9am | 75.7% | 0.0% | 37 |
| 9am–10am | Limited data | 1 | |
| 10am–11am | 95.0% | 0.0% | 60 |
| 11am–12pm | Limited data | 5 | |
| 12pm–1pm | 78.0% | 0.0% | 59 |
| 1pm–2pm | Limited data | 7 | |
| 2pm–3pm | Limited data | 3 | |
| 3pm–4pm | Limited data | 2 | |
| 4pm–5pm | Limited data | 10 | |
| 5pm–6pm | Limited data | 29 | |
| 6pm–7pm | Limited data | 22 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BUF to PHL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 6 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 4 | ||
| Summer peak (Jun 15 - Aug 15) | 74.4% | -8.0 pts | 2.9% | 137 |
| All other days | 82.4% | — | 2.1% | 378 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).