Best Time to Fly BOS to PHL: On-Time Stats by Hour & Airline
Logan International → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.5% of Boston (BOS) to Philadelphia (PHL) flights arrived on time (4,981 scheduled flights). That is 1.1 points below the national average of 77.6%.
Frontier Airlines was the most punctual of the 4 airlines on the route at 79.1%, while JetBlue trailed at 72.1%.
November has been the best month (86% on time) and Monday the weakest day of the week (74%).
3.0% of flights were cancelled, versus 1.8% nationally.
BOS 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 |
|---|---|---|---|---|
| Frontier Airlines | 79.1% | 58 min | 0.0% | 43 |
| Republic Airways | 78.9% | 70 min | 3.4% | 1,772 |
| American Airlines | 76.3% | 106 min | 2.8% | 2,274 |
| JetBlue | 72.1% | 67 min | 3.2% | 892 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to PHL
On-time arrival % by scheduled departure hour (local time), 10,271 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.1% | 3.7% | 300 |
| 6am–7am | 93.3% | 2.4% | 764 |
| 7am–8am | 92.9% | 2.3% | 661 |
| 8am–9am | 83.7% | 1.1% | 1,237 |
| 9am–10am | 85.4% | 1.4% | 634 |
| 10am–11am | 85.1% | 0.9% | 551 |
| 11am–12pm | 83.2% | 1.1% | 794 |
| 12pm–1pm | 80.0% | 1.1% | 535 |
| 1pm–2pm | 73.9% | 0.9% | 325 |
| 2pm–3pm | 79.1% | 1.8% | 327 |
| 3pm–4pm | 73.4% | 2.6% | 973 |
| 4pm–5pm | 54.4% | 2.9% | 619 |
| 5pm–6pm | 65.8% | 4.6% | 564 |
| 6pm–7pm | 59.1% | 7.3% | 482 |
| 7pm–8pm | 65.7% | 4.2% | 1,047 |
| 8pm–9pm | 62.3% | 3.4% | 415 |
| 9pm–10pm | 58.5% | 2.4% | 42 |
| 10pm–11pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS 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) | 77.9% | -0.7 pts | 0.0% | 208 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.6% | -4.0 pts | 3.7% | 296 |
| Summer peak (Jun 15 - Aug 15) | 71.2% | -7.4 pts | 6.4% | 1,769 |
| All other days | 78.5% | — | 1.7% | 7,998 |
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).