Flight OddsSEA → IAD United Airlines
United Airlines · Seattle, WA to Washington, DC · 690 flights, 2025-07-01 to 2026-06-30 · aggregated across 17 flight numbers
On-time arrival
87%
Median delay
-13 min
90th percentile
+25 min
Cancellation rate
1%
How on-time is United Airlines from SEA to IAD?
Across every United Airlines flight number on SEA → IAD (690 flights, 2025-07-01 to 2026-06-30), 87% arrived within 15 minutes of schedule. Median arrival delay -13 min; the worst 10% ran +25 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 593 | 87% |
| 16-30 min | 32 | 5% |
| 31-60 min | 15 | 2% |
| 61-120 min | 24 | 4% |
| 2+ hrs | 16 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 119 | 76% | +20 min |
| 2025-08 | 97 | 72% | +21 min |
| 2025-09 | 58 | 97% | -9 min |
| 2025-10 | 49 | 92% | -12 min |
| 2025-11 | 30 | 93% | -16 min |
| 2025-12 | 45 | 93% | -22 min |
| 2026-01 | 35 | 97% | -20 min |
| 2026-02 | 28 | 96% | -20 min |
| 2026-03 | 30 | 97% | -20 min |
| 2026-04 | 32 | 94% | -18 min |
| 2026-05 | 81 | 89% | -9 min |
| 2026-06 | 76 | 92% | -16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 98 | 92% |
| Tue | 91 | 92% |
| Wed | 91 | 89% |
| Thu | 102 | 88% |
| Fri | 104 | 82% |
| Sat | 94 | 82% |
| Sun | 100 | 86% |
UA flight numbers on SEA → IAD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…