Flight OddsIAD → SEA United Airlines
United Airlines · Washington, DC to Seattle, WA · 688 flights, 2025-07-01 to 2026-06-30 · aggregated across 13 flight numbers
On-time arrival
80%
Median delay
-6 min
90th percentile
+37 min
Cancellation rate
1%
How on-time is United Airlines from IAD to SEA?
Across every United Airlines flight number on IAD → SEA (688 flights, 2025-07-01 to 2026-06-30), 80% arrived within 15 minutes of schedule. Median arrival delay -6 min; the worst 10% ran +37 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 546 | 80% |
| 16-30 min | 55 | 8% |
| 31-60 min | 36 | 5% |
| 61-120 min | 29 | 4% |
| 2+ hrs | 15 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 120 | 73% | +12 min |
| 2025-08 | 96 | 76% | +2 min |
| 2025-09 | 59 | 95% | -12 min |
| 2025-10 | 49 | 86% | +0 min |
| 2025-11 | 30 | 77% | +14 min |
| 2025-12 | 44 | 82% | +4 min |
| 2026-01 | 35 | 83% | -2 min |
| 2026-02 | 28 | 68% | +11 min |
| 2026-03 | 30 | 67% | +15 min |
| 2026-04 | 32 | 84% | -3 min |
| 2026-05 | 81 | 88% | -5 min |
| 2026-06 | 77 | 81% | +9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 102 | 80% |
| Tue | 91 | 80% |
| Wed | 87 | 83% |
| Thu | 104 | 80% |
| Fri | 102 | 80% |
| Sat | 96 | 82% |
| Sun | 99 | 76% |
UA flight numbers on IAD → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…