Flight OddsAA521 SJU → PHL
American Airlines · San Juan, PR to Philadelphia, PA · 25 flights observed, 2026-01-08 to 2026-02-09 · 1,576 mi
AA521 covers more than one route in the data window — the stats below are for SJU → PHL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
65%
Median delay
-2 min
90th percentile
+91 min
Cancellation rate
8%
How often is AA521 on time?
Across 25 flights on SJU → PHL from 2026-01-08 to 2026-02-09, AA521 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +91 min or later. 8% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 15 | 65% |
| 16-30 min | 2 | 9% |
| 31-60 min | 2 | 9% |
| 61-120 min | 3 | 13% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 16 | 81% | +10 min |
| 2026-02 | 7 | 29% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 60% |
| Fri | 5 | 100% |
| Sat | 4 | 75% |
| Sun | 4 | 25% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…