Flight OddsSouthwest Airlines · St. Louis, MO to San Diego, CA · 14 flights observed, 2025-07-03 to 2025-08-04 · 1,557 mi
WN1931 covers more than one route in the data window — the stats below are for STL → SAN, the one it has flown most recently. The others are linked under “Other routes”.
How often is WN1931 on time?
Across 14 flights on STL → SAN from 2025-07-03 to 2025-08-04, WN1931 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +51 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 7 | 50% |
| 16-30 min | 4 | 29% |
| 31-60 min | 3 | 21% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 12 | 50% | +10 min |
| 2025-08 | 2 | 50% | +27 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 60% |
| Fri | 4 | 25% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…