Flight OddsMCI → STL Southwest Airlines
Southwest Airlines · Kansas City, MO to St. Louis, MO · 1,020 flights, 2025-07-01 to 2026-06-30 · aggregated across 44 flight numbers
On-time arrival
86%
Median delay
-9 min
90th percentile
+25 min
Cancellation rate
0%
How on-time is Southwest Airlines from MCI to STL?
Across every Southwest Airlines flight number on MCI → STL (1,020 flights, 2025-07-01 to 2026-06-30), 86% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +25 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 877 | 86% |
| 16-30 min | 52 | 5% |
| 31-60 min | 56 | 6% |
| 61-120 min | 22 | 2% |
| 2+ hrs | 8 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 92 | 83% | +1 min |
| 2025-08 | 92 | 86% | +0 min |
| 2025-09 | 90 | 91% | -5 min |
| 2025-10 | 88 | 86% | +0 min |
| 2025-11 | 81 | 88% | -4 min |
| 2025-12 | 84 | 89% | -7 min |
| 2026-01 | 69 | 91% | -10 min |
| 2026-02 | 71 | 96% | -11 min |
| 2026-03 | 86 | 85% | +1 min |
| 2026-04 | 86 | 85% | 0 min |
| 2026-05 | 86 | 81% | +2 min |
| 2026-06 | 90 | 79% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 150 | 83% |
| Tue | 150 | 91% |
| Wed | 145 | 92% |
| Thu | 151 | 81% |
| Fri | 151 | 91% |
| Sat | 116 | 86% |
| Sun | 152 | 81% |
WN flight numbers on MCI → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…