Flight OddsSTL → PHL Southwest Airlines
Southwest Airlines · St. Louis, MO to Philadelphia, PA · 724 flights, 2025-07-01 to 2026-06-30 · aggregated across 33 flight numbers
On-time arrival
77%
Median delay
-2 min
90th percentile
+43 min
Cancellation rate
1%
How on-time is Southwest Airlines from STL to PHL?
Across every Southwest Airlines flight number on STL → PHL (724 flights, 2025-07-01 to 2026-06-30), 77% arrived within 15 minutes of schedule. Median arrival delay -2 min; the worst 10% ran +43 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 553 | 77% |
| 16-30 min | 63 | 9% |
| 31-60 min | 54 | 8% |
| 61-120 min | 32 | 4% |
| 2+ hrs | 16 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 56 | 79% | +5 min |
| 2025-08 | 57 | 84% | +8 min |
| 2025-09 | 56 | 79% | +7 min |
| 2025-10 | 61 | 84% | +4 min |
| 2025-11 | 82 | 83% | +1 min |
| 2025-12 | 89 | 76% | +10 min |
| 2026-01 | 39 | 87% | -7 min |
| 2026-02 | 26 | 96% | -11 min |
| 2026-03 | 54 | 59% | +28 min |
| 2026-04 | 69 | 83% | +5 min |
| 2026-05 | 72 | 63% | +24 min |
| 2026-06 | 57 | 65% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 112 | 78% |
| Tue | 106 | 75% |
| Wed | 104 | 82% |
| Thu | 110 | 81% |
| Fri | 111 | 77% |
| Sat | 61 | 82% |
| Sun | 114 | 67% |
WN flight numbers on STL → PHL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…