Best Time to Fly SJU to PHL: On-Time Stats by Hour & Airline
Luis Munoz Marin International → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
1,934 flights were scheduled from San Juan (SJU) to Philadelphia (PHL) in the last 12 months, and 71.0% of those that flew arrived on time, 6.6 points below the US average of 77.6%.
Among 4 airlines, JetBlue led with 93.5% on time and Frontier Airlines was last with 61.7%.
Over 24 months, Wednesday was the most reliable day (78% on time) and August the worst month (57%).
The cancellation rate was 3.4% (US average 1.8%).
SJU 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 |
|---|---|---|---|---|
| JetBlue | 93.5% | 84 min | 2.3% | 128 |
| American Airlines | 79.9% | 95 min | 2.6% | 732 |
| Spirit Airlines | 64.5% | 68 min | 8.7% | 185 |
| Frontier Airlines | 61.7% | 81 min | 3.1% | 889 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SJU to PHL
On-time arrival % by scheduled departure hour (local time), 3,515 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 40.8% | 7.1% | 169 |
| 1am–2am | 57.7% | 8.4% | 213 |
| 2am–3am | 61.1% | 4.8% | 146 |
| 3am–4am | 78.8% | 0.0% | 66 |
| 4am–5am | Limited data | 3 | |
| 5am–6am | 90.0% | 0.5% | 201 |
| 6am–7am | 87.5% | 2.6% | 454 |
| 7am–8am | 88.0% | 3.8% | 184 |
| 8am–9am | 80.5% | 0.0% | 123 |
| 9am–10am | Limited data | 15 | |
| 10am–11am | 73.2% | 0.0% | 144 |
| 11am–12pm | 64.5% | 3.7% | 163 |
| 12pm–1pm | 71.0% | 1.6% | 244 |
| 1pm–2pm | 66.3% | 0.0% | 321 |
| 2pm–3pm | 78.4% | 1.4% | 354 |
| 3pm–4pm | 33.3% | 0.0% | 39 |
| 4pm–5pm | 59.6% | 2.0% | 101 |
| 5pm–6pm | 69.2% | 6.2% | 97 |
| 6pm–7pm | 83.9% | 2.2% | 89 |
| 7pm–8pm | 64.8% | 0.0% | 54 |
| 8pm–9pm | 65.5% | 2.2% | 89 |
| 9pm–10pm | 57.5% | 1.9% | 212 |
| 10pm–11pm | 63.6% | 2.9% | 34 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SJU 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) | 78.5% | +4.4 pts | 0.0% | 65 |
| Christmas & New Year (Dec 20 - Jan 3) | 55.2% | -18.8 pts | 4.9% | 183 |
| Summer peak (Jun 15 - Aug 15) | 64.9% | -9.1 pts | 3.9% | 613 |
| All other days | 74.0% | — | 2.1% | 2,654 |
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).