Best Time to Fly PHL to BOS: On-Time Stats by Hour & Airline
Philadelphia International → Logan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.1% of Philadelphia (PHL) to Boston (BOS) flights arrived on time (4,978 scheduled flights). That is 2.5 points below the national average of 77.6%.
Among 4 airlines, Frontier Airlines led with 90.7% on time and American Airlines was last with 71.1%.
Over 24 months, Saturday was the most reliable day (81% on time) and July the worst month (67%).
The cancellation rate was 3.0% (US average 1.8%).
PHL to BOS 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 | 90.7% | 47 min | 0.0% | 43 |
| Republic Airways | 80.8% | 77 min | 3.3% | 1,771 |
| JetBlue | 73.2% | 72 min | 3.4% | 892 |
| American Airlines | 71.1% | 81 min | 2.8% | 2,272 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHL to BOS
On-time arrival % by scheduled departure hour (local time), 10,265 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 4 | |
| 6am–7am | 90.5% | 1.4% | 1,215 |
| 7am–8am | 88.8% | 1.4% | 489 |
| 8am–9am | 84.5% | 1.6% | 873 |
| 9am–10am | 90.8% | 2.7% | 438 |
| 10am–11am | 85.3% | 0.5% | 1,135 |
| 11am–12pm | 87.7% | 2.3% | 481 |
| 12pm–1pm | 77.2% | 1.7% | 352 |
| 1pm–2pm | 72.4% | 1.8% | 716 |
| 2pm–3pm | 68.9% | 1.7% | 301 |
| 3pm–4pm | 63.9% | 3.8% | 480 |
| 4pm–5pm | 66.3% | 2.6% | 536 |
| 5pm–6pm | 60.5% | 5.2% | 951 |
| 6pm–7pm | 60.8% | 3.0% | 780 |
| 7pm–8pm | 66.5% | 4.0% | 599 |
| 8pm–9pm | 58.9% | 7.0% | 157 |
| 9pm–10pm | 73.6% | 3.3% | 545 |
| 10pm–11pm | 72.3% | 5.2% | 213 |
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 BOS
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) | 84.6% | +6.9 pts | 0.0% | 208 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.8% | -2.9 pts | 3.4% | 296 |
| Summer peak (Jun 15 - Aug 15) | 69.0% | -8.7 pts | 6.0% | 1,768 |
| All other days | 77.7% | — | 1.8% | 7,993 |
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).