Flight OddsSTL → HOU Southwest Airlines
Southwest Airlines · St. Louis, MO to Houston, TX · 1,533 flights, 2025-07-01 to 2026-06-30 · aggregated across 86 flight numbers
On-time arrival
80%
Median delay
-8 min
90th percentile
+35 min
Cancellation rate
0%
How on-time is Southwest Airlines from STL to HOU?
Across every Southwest Airlines flight number on STL → HOU (1,533 flights, 2025-07-01 to 2026-06-30), 80% arrived within 15 minutes of schedule. Median arrival delay -8 min; the worst 10% ran +35 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,222 | 80% |
| 16-30 min | 123 | 8% |
| 31-60 min | 90 | 6% |
| 61-120 min | 56 | 4% |
| 2+ hrs | 34 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 142 | 82% | +5 min |
| 2025-08 | 128 | 80% | +4 min |
| 2025-09 | 124 | 87% | -4 min |
| 2025-10 | 123 | 81% | +4 min |
| 2025-11 | 133 | 77% | +5 min |
| 2025-12 | 138 | 71% | +7 min |
| 2026-01 | 107 | 86% | -9 min |
| 2026-02 | 106 | 95% | -15 min |
| 2026-03 | 138 | 77% | +10 min |
| 2026-04 | 131 | 89% | -3 min |
| 2026-05 | 129 | 74% | +8 min |
| 2026-06 | 126 | 67% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 244 | 73% |
| Tue | 208 | 87% |
| Wed | 201 | 91% |
| Thu | 236 | 78% |
| Fri | 236 | 82% |
| Sat | 159 | 76% |
| Sun | 241 | 76% |
WN flight numbers on STL → HOU
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…