Flight OddsSEA → DEN Southwest Airlines
Southwest Airlines · Seattle, WA to Denver, CO · 1,345 flights, 2025-07-01 to 2026-06-30 · aggregated across 77 flight numbers
On-time arrival
70%
Median delay
+3 min
90th percentile
+49 min
Cancellation rate
1%
How on-time is Southwest Airlines from SEA to DEN?
Across every Southwest Airlines flight number on SEA → DEN (1,345 flights, 2025-07-01 to 2026-06-30), 70% arrived within 15 minutes of schedule. Median arrival delay +3 min; the worst 10% ran +49 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 931 | 70% |
| 16-30 min | 158 | 12% |
| 31-60 min | 134 | 10% |
| 61-120 min | 71 | 5% |
| 2+ hrs | 31 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 146 | 62% | +29 min |
| 2025-08 | 137 | 58% | +22 min |
| 2025-09 | 136 | 65% | +19 min |
| 2025-10 | 127 | 71% | +9 min |
| 2025-11 | 86 | 77% | +7 min |
| 2025-12 | 94 | 79% | +7 min |
| 2026-01 | 93 | 91% | -3 min |
| 2026-02 | 85 | 82% | +4 min |
| 2026-03 | 90 | 72% | +7 min |
| 2026-04 | 93 | 81% | +5 min |
| 2026-05 | 98 | 71% | +8 min |
| 2026-06 | 140 | 56% | +29 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 190 | 76% |
| Tue | 192 | 69% |
| Wed | 187 | 74% |
| Thu | 191 | 65% |
| Fri | 189 | 65% |
| Sat | 177 | 80% |
| Sun | 199 | 63% |
WN flight numbers on SEA → DEN
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…