Flight OddsDEN → IAD Southwest Airlines
Southwest Airlines · Denver, CO to Washington, DC · 761 flights, 2025-07-01 to 2026-06-03 · aggregated across 25 flight numbers
On-time arrival
67%
Median delay
+6 min
90th percentile
+59 min
Cancellation rate
1%
How on-time is Southwest Airlines from DEN to IAD?
Across every Southwest Airlines flight number on DEN → IAD (761 flights, 2025-07-01 to 2026-06-03), 67% arrived within 15 minutes of schedule. Median arrival delay +6 min; the worst 10% ran +59 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 504 | 67% |
| 16-30 min | 86 | 11% |
| 31-60 min | 96 | 13% |
| 61-120 min | 51 | 7% |
| 2+ hrs | 17 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 83 | 60% | +33 min |
| 2025-08 | 82 | 56% | +28 min |
| 2025-09 | 82 | 66% | +20 min |
| 2025-10 | 68 | 65% | +16 min |
| 2025-11 | 69 | 81% | +1 min |
| 2025-12 | 72 | 76% | +9 min |
| 2026-01 | 58 | 91% | 0 min |
| 2026-02 | 52 | 71% | +10 min |
| 2026-03 | 61 | 54% | +25 min |
| 2026-04 | 60 | 67% | +10 min |
| 2026-05 | 62 | 52% | +23 min |
| 2026-06 | 5 | 80% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 119 | 63% |
| Tue | 115 | 75% |
| Wed | 112 | 71% |
| Thu | 116 | 60% |
| Fri | 116 | 69% |
| Sat | 78 | 60% |
| Sun | 98 | 67% |
WN flight numbers on DEN → IAD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…