Flight OddsDCA → STL Southwest Airlines
Southwest Airlines · Washington, DC to St. Louis, MO · 1,403 flights, 2025-07-01 to 2026-06-30 · aggregated across 58 flight numbers
On-time arrival
77%
Median delay
-4 min
90th percentile
+43 min
Cancellation rate
1%
How on-time is Southwest Airlines from DCA to STL?
Across every Southwest Airlines flight number on DCA → STL (1,403 flights, 2025-07-01 to 2026-06-30), 77% arrived within 15 minutes of schedule. Median arrival delay -4 min; the worst 10% ran +43 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,063 | 77% |
| 16-30 min | 131 | 9% |
| 31-60 min | 88 | 6% |
| 61-120 min | 57 | 4% |
| 2+ hrs | 45 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 117 | 62% | +42 min |
| 2025-08 | 119 | 82% | +7 min |
| 2025-09 | 115 | 86% | +2 min |
| 2025-10 | 120 | 73% | +6 min |
| 2025-11 | 111 | 77% | +10 min |
| 2025-12 | 120 | 73% | +8 min |
| 2026-01 | 111 | 89% | -5 min |
| 2026-02 | 101 | 81% | +4 min |
| 2026-03 | 118 | 77% | +12 min |
| 2026-04 | 115 | 82% | -1 min |
| 2026-05 | 118 | 78% | +8 min |
| 2026-06 | 119 | 63% | +22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 203 | 78% |
| Tue | 211 | 83% |
| Wed | 207 | 80% |
| Thu | 204 | 78% |
| Fri | 208 | 68% |
| Sat | 153 | 80% |
| Sun | 198 | 71% |
WN flight numbers on DCA → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…