Flight OddsDEN → SEA Southwest Airlines
Southwest Airlines · Denver, CO to Seattle, WA · 1,341 flights, 2025-07-01 to 2026-06-30 · aggregated across 64 flight numbers
On-time arrival
63%
Median delay
+8 min
90th percentile
+56 min
Cancellation rate
0%
How on-time is Southwest Airlines from DEN to SEA?
Across every Southwest Airlines flight number on DEN → SEA (1,341 flights, 2025-07-01 to 2026-06-30), 63% arrived within 15 minutes of schedule. Median arrival delay +8 min; the worst 10% ran +56 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 837 | 63% |
| 16-30 min | 200 | 15% |
| 31-60 min | 181 | 14% |
| 61-120 min | 93 | 7% |
| 2+ hrs | 25 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 150 | 61% | +23 min |
| 2025-08 | 140 | 56% | +22 min |
| 2025-09 | 137 | 69% | +13 min |
| 2025-10 | 125 | 71% | +11 min |
| 2025-11 | 90 | 78% | +6 min |
| 2025-12 | 95 | 40% | +30 min |
| 2026-01 | 93 | 77% | +7 min |
| 2026-02 | 84 | 75% | +5 min |
| 2026-03 | 91 | 57% | +22 min |
| 2026-04 | 93 | 75% | +7 min |
| 2026-05 | 98 | 55% | +19 min |
| 2026-06 | 140 | 46% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 194 | 66% |
| Tue | 194 | 64% |
| Wed | 188 | 65% |
| Thu | 193 | 59% |
| Fri | 192 | 58% |
| Sat | 178 | 65% |
| Sun | 197 | 60% |
WN flight numbers on DEN → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…