Flight OddsSTL → SAN Southwest Airlines
Southwest Airlines · St. Louis, MO to San Diego, CA · 474 flights, 2025-07-01 to 2026-06-30 · aggregated across 30 flight numbers
On-time arrival
77%
Median delay
0 min
90th percentile
+41 min
Cancellation rate
0%
How on-time is Southwest Airlines from STL to SAN?
Across every Southwest Airlines flight number on STL → SAN (474 flights, 2025-07-01 to 2026-06-30), 77% arrived within 15 minutes of schedule. Median arrival delay 0 min; the worst 10% ran +41 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 362 | 77% |
| 16-30 min | 41 | 9% |
| 31-60 min | 44 | 9% |
| 61-120 min | 19 | 4% |
| 2+ hrs | 6 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 39 | 59% | +21 min |
| 2025-08 | 36 | 69% | +17 min |
| 2025-09 | 33 | 82% | +12 min |
| 2025-10 | 57 | 75% | +8 min |
| 2025-11 | 48 | 79% | +7 min |
| 2025-12 | 46 | 67% | +18 min |
| 2026-01 | 35 | 86% | -7 min |
| 2026-02 | 35 | 77% | -7 min |
| 2026-03 | 35 | 89% | -7 min |
| 2026-04 | 34 | 94% | +2 min |
| 2026-05 | 36 | 89% | -7 min |
| 2026-06 | 38 | 61% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 62 | 71% |
| Tue | 60 | 85% |
| Wed | 56 | 71% |
| Thu | 62 | 76% |
| Fri | 68 | 82% |
| Sat | 79 | 81% |
| Sun | 85 | 71% |
WN flight numbers on STL → SAN
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…