STL → MCI Southwest Airlines
Southwest Airlines · St. Louis, MO to Kansas City, MO · 1,020 flights, 2025-07-01 to 2026-06-30 · aggregated across 52 flight numbers
On-time arrival
76%
Median delay
-3 min
90th percentile
+43 min
Cancellation rate
0%
How on-time is Southwest Airlines from STL to MCI?
Across every Southwest Airlines flight number on STL → MCI (1,020 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +43 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 775 | 76% |
| 16-30 min | 97 | 10% |
| 31-60 min | 74 | 7% |
| 61-120 min | 46 | 5% |
| 2+ hrs | 25 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 92 | 68% | +20 min |
| 2025-08 | 91 | 80% | +4 min |
| 2025-09 | 90 | 84% | +4 min |
| 2025-10 | 88 | 78% | +5 min |
| 2025-11 | 81 | 86% | 0 min |
| 2025-12 | 84 | 61% | +15 min |
| 2026-01 | 70 | 81% | +11 min |
| 2026-02 | 71 | 83% | +2 min |
| 2026-03 | 86 | 81% | +10 min |
| 2026-04 | 86 | 73% | +10 min |
| 2026-05 | 88 | 74% | +9 min |
| 2026-06 | 90 | 66% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 153 | 70% |
| Tue | 151 | 83% |
| Wed | 145 | 82% |
| Thu | 151 | 75% |
| Fri | 150 | 82% |
| Sat | 116 | 77% |
| Sun | 151 | 64% |
WN flight numbers on STL → MCI
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…