Flight OddsDSM → STL Southwest Airlines
Southwest Airlines · Des Moines, IA to St. Louis, MO · 460 flights, 2025-07-01 to 2026-03-04 · aggregated across 20 flight numbers
On-time arrival
90%
Median delay
-14 min
90th percentile
+14 min
Cancellation rate
1%
How on-time is Southwest Airlines from DSM to STL?
Across every Southwest Airlines flight number on DSM → STL (460 flights, 2025-07-01 to 2026-03-04), 90% arrived within 15 minutes of schedule. Median arrival delay -14 min; the worst 10% ran +14 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 413 | 90% |
| 16-30 min | 17 | 4% |
| 31-60 min | 15 | 3% |
| 61-120 min | 6 | 1% |
| 2+ hrs | 6 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 57 | 95% | -9 min |
| 2025-08 | 56 | 82% | +5 min |
| 2025-09 | 56 | 89% | +2 min |
| 2025-10 | 57 | 98% | -10 min |
| 2025-11 | 54 | 89% | -9 min |
| 2025-12 | 59 | 86% | +6 min |
| 2026-01 | 58 | 88% | -13 min |
| 2026-02 | 52 | 94% | -14 min |
| 2026-03 | 8 | 100% | -22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 70 | 89% |
| Tue | 72 | 96% |
| Wed | 72 | 97% |
| Thu | 69 | 88% |
| Fri | 68 | 93% |
| Sat | 39 | 79% |
| Sun | 67 | 85% |
WN flight numbers on DSM → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…