Flight OddsSAN → STL Southwest Airlines
Southwest Airlines · San Diego, CA to St. Louis, MO · 474 flights, 2025-07-01 to 2026-06-30 · aggregated across 39 flight numbers
On-time arrival
77%
Median delay
-3 min
90th percentile
+42 min
Cancellation rate
0%
How on-time is Southwest Airlines from SAN to STL?
Across every Southwest Airlines flight number on SAN → STL (474 flights, 2025-07-01 to 2026-06-30), 77% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +42 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 361 | 77% |
| 16-30 min | 40 | 8% |
| 31-60 min | 37 | 8% |
| 61-120 min | 29 | 6% |
| 2+ hrs | 4 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 39 | 69% | +9 min |
| 2025-08 | 35 | 83% | +4 min |
| 2025-09 | 34 | 85% | -5 min |
| 2025-10 | 57 | 96% | -13 min |
| 2025-11 | 48 | 73% | +15 min |
| 2025-12 | 46 | 67% | +13 min |
| 2026-01 | 34 | 65% | +7 min |
| 2026-02 | 35 | 94% | -5 min |
| 2026-03 | 36 | 78% | +10 min |
| 2026-04 | 33 | 79% | +2 min |
| 2026-05 | 36 | 72% | +8 min |
| 2026-06 | 38 | 53% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 62 | 71% |
| Tue | 60 | 83% |
| Wed | 57 | 86% |
| Thu | 61 | 75% |
| Fri | 68 | 66% |
| Sat | 79 | 82% |
| Sun | 84 | 74% |
WN flight numbers on SAN → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…