Best Time to Fly PHL to BUF: On-Time Stats by Hour & Airline
Philadelphia International → Buffalo Niagara International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.0% of Philadelphia (PHL) to Buffalo (BUF) flights arrived on time (261 scheduled flights). That is 6.7 points below the national average of 77.6%.
Among 2 airlines, Republic Airways led with 77.2% on time and PSA Airlines was last with 66.4%.
Over 24 months, Tuesday was the most reliable day (84% on time) and July the worst month (59%).
The cancellation rate was 5.0% (US average 1.8%).
PHL to BUF 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 | 77.2% | 100 min | 4.5% | 133 |
| PSA Airlines | 66.4% | 88 min | 5.2% | 116 |
| American Airlines | Limited data | 12 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHL to BUF
On-time arrival % by scheduled departure hour (local time), 523 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 1 | |
| 8am–9am | 91.5% | 0.0% | 47 |
| 10am–11am | 79.6% | 0.0% | 54 |
| 11am–12pm | Limited data | 4 | |
| 12pm–1pm | Limited data | 3 | |
| 1pm–2pm | Limited data | 6 | |
| 2pm–3pm | 80.0% | 0.0% | 30 |
| 3pm–4pm | Limited data | 5 | |
| 4pm–5pm | Limited data | 5 | |
| 5pm–6pm | Limited data | 23 | |
| 6pm–7pm | 46.5% | 2.3% | 44 |
| 7pm–8pm | 61.3% | 11.4% | 35 |
| 9pm–10pm | 67.5% | 8.3% | 253 |
| 10pm–11pm | Limited data | 13 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHL to BUF
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) | 62.0% | -10.7 pts | 9.6% | 135 |
| All other days | 72.7% | — | 3.2% | 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).