Best Time to Fly LAX to PHL: On-Time Stats by Hour & Airline
Los Angeles International → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.1% of Los Angeles (LAX) to Philadelphia (PHL) flights arrived on time (2,398 scheduled flights). That is 1.5 points above the national average of 77.6%.
American Airlines was the most punctual of the 2 airlines on the route at 79.8%, while Frontier Airlines trailed at 56.1%.
February has been the best month (86% on time) and Thursday the weakest day of the week (76%).
1.5% of flights were cancelled, versus 1.8% nationally.
LAX 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 |
|---|---|---|---|---|
| American Airlines | 79.8% | 78 min | 1.5% | 2,332 |
| Frontier Airlines | 56.1% | 57 min | 0.0% | 66 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAX to PHL
On-time arrival % by scheduled departure hour (local time), 4,975 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 88.2% | 0.9% | 335 |
| 1am–2am | 77.4% | 2.1% | 95 |
| 5am–6am | 93.5% | 0.0% | 107 |
| 6am–7am | 88.5% | 1.1% | 553 |
| 7am–8am | 89.5% | 1.2% | 329 |
| 8am–9am | 84.7% | 1.9% | 214 |
| 9am–10am | 72.1% | 0.6% | 529 |
| 10am–11am | 71.4% | 0.6% | 163 |
| 11am–12pm | 72.2% | 0.9% | 423 |
| 12pm–1pm | 76.5% | 1.1% | 281 |
| 1pm–2pm | Limited data | 3 | |
| 2pm–3pm | 72.9% | 0.6% | 178 |
| 3pm–4pm | 77.2% | 3.1% | 487 |
| 4pm–5pm | 74.1% | 4.0% | 149 |
| 8pm–9pm | 90.6% | 0.0% | 32 |
| 9pm–10pm | 82.6% | 0.0% | 115 |
| 10pm–11pm | 70.3% | 2.7% | 409 |
| 11pm–12am | 84.4% | 0.5% | 573 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAX 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) | 74.1% | -8.3 pts | 0.0% | 81 |
| Christmas & New Year (Dec 20 - Jan 3) | 83.8% | +1.4 pts | 0.5% | 187 |
| Summer peak (Jun 15 - Aug 15) | 69.7% | -12.7 pts | 3.2% | 1,027 |
| All other days | 82.4% | — | 0.9% | 3,680 |
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).