Flight OddsSTL → SAT Southwest Airlines
Southwest Airlines · St. Louis, MO to San Antonio, TX · 547 flights, 2025-07-01 to 2026-06-30 · aggregated across 31 flight numbers
On-time arrival
82%
Median delay
-8 min
90th percentile
+35 min
Cancellation rate
0%
How on-time is Southwest Airlines from STL to SAT?
Across every Southwest Airlines flight number on STL → SAT (547 flights, 2025-07-01 to 2026-06-30), 82% 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 | 444 | 82% |
| 16-30 min | 37 | 7% |
| 31-60 min | 33 | 6% |
| 61-120 min | 17 | 3% |
| 2+ hrs | 10 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 53 | 83% | +10 min |
| 2025-08 | 46 | 76% | +3 min |
| 2025-09 | 47 | 89% | -3 min |
| 2025-10 | 52 | 87% | +0 min |
| 2025-11 | 33 | 91% | -8 min |
| 2025-12 | 40 | 75% | +10 min |
| 2026-01 | 28 | 93% | -7 min |
| 2026-02 | 26 | 92% | -12 min |
| 2026-03 | 54 | 81% | -6 min |
| 2026-04 | 56 | 86% | -1 min |
| 2026-05 | 55 | 84% | -3 min |
| 2026-06 | 51 | 59% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 89 | 79% |
| Tue | 82 | 88% |
| Wed | 77 | 87% |
| Thu | 87 | 82% |
| Fri | 86 | 83% |
| Sat | 46 | 85% |
| Sun | 74 | 73% |
WN flight numbers on STL → SAT
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…