Flight OddsSTL → BWI Southwest Airlines
Southwest Airlines · St. Louis, MO to Baltimore, MD · 1,281 flights, 2025-07-01 to 2026-06-30 · aggregated across 69 flight numbers
On-time arrival
81%
Median delay
-6 min
90th percentile
+38 min
Cancellation rate
1%
How on-time is Southwest Airlines from STL to BWI?
Across every Southwest Airlines flight number on STL → BWI (1,281 flights, 2025-07-01 to 2026-06-30), 81% arrived within 15 minutes of schedule. Median arrival delay -6 min; the worst 10% ran +38 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,028 | 81% |
| 16-30 min | 90 | 7% |
| 31-60 min | 68 | 5% |
| 61-120 min | 44 | 3% |
| 2+ hrs | 32 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 124 | 73% | +21 min |
| 2025-08 | 127 | 87% | +1 min |
| 2025-09 | 116 | 79% | +6 min |
| 2025-10 | 109 | 86% | +2 min |
| 2025-11 | 107 | 83% | +2 min |
| 2025-12 | 100 | 82% | +3 min |
| 2026-01 | 70 | 86% | -4 min |
| 2026-02 | 71 | 86% | -4 min |
| 2026-03 | 104 | 71% | +13 min |
| 2026-04 | 107 | 88% | -1 min |
| 2026-05 | 112 | 88% | -2 min |
| 2026-06 | 115 | 72% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 186 | 81% |
| Tue | 175 | 83% |
| Wed | 166 | 86% |
| Thu | 187 | 80% |
| Fri | 189 | 82% |
| Sat | 165 | 82% |
| Sun | 194 | 76% |
WN flight numbers on STL → BWI
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…