Flight OddsSTL → SFO Southwest Airlines
Southwest Airlines · St. Louis, MO to San Francisco, CA · 342 flights, 2025-07-01 to 2026-06-30 · aggregated across 17 flight numbers
On-time arrival
64%
Median delay
+4 min
90th percentile
+81 min
Cancellation rate
0%
How on-time is Southwest Airlines from STL to SFO?
Across every Southwest Airlines flight number on STL → SFO (342 flights, 2025-07-01 to 2026-06-30), 64% arrived within 15 minutes of schedule. Median arrival delay +4 min; the worst 10% ran +81 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 217 | 64% |
| 16-30 min | 39 | 11% |
| 31-60 min | 33 | 10% |
| 61-120 min | 44 | 13% |
| 2+ hrs | 8 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 68% | +12 min |
| 2025-08 | 30 | 73% | +7 min |
| 2025-09 | 30 | 77% | +4 min |
| 2025-10 | 31 | 48% | +29 min |
| 2025-11 | 27 | 85% | +2 min |
| 2025-12 | 29 | 69% | +14 min |
| 2026-01 | 27 | 89% | 0 min |
| 2026-02 | 27 | 67% | +13 min |
| 2026-03 | 27 | 93% | -1 min |
| 2026-04 | 26 | 50% | +26 min |
| 2026-05 | 26 | 35% | +47 min |
| 2026-06 | 30 | 13% | +56 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 63% |
| Tue | 53 | 72% |
| Wed | 52 | 60% |
| Thu | 51 | 61% |
| Fri | 52 | 69% |
| Sat | 30 | 63% |
| Sun | 51 | 57% |
WN flight numbers on STL → SFO
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…