Flight OddsIAD → SEA Alaska Airlines
Alaska Airlines · Washington, DC to Seattle, WA · 835 flights, 2025-07-01 to 2026-06-30 · aggregated across 8 flight numbers
On-time arrival
75%
Median delay
-3 min
90th percentile
+47 min
Cancellation rate
1%
How on-time is Alaska Airlines from IAD to SEA?
Across every Alaska Airlines flight number on IAD → SEA (835 flights, 2025-07-01 to 2026-06-30), 75% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +47 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 617 | 75% |
| 16-30 min | 86 | 10% |
| 31-60 min | 61 | 7% |
| 61-120 min | 43 | 5% |
| 2+ hrs | 18 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 91 | 70% | +21 min |
| 2025-08 | 93 | 84% | -4 min |
| 2025-09 | 90 | 93% | -12 min |
| 2025-10 | 74 | 84% | +1 min |
| 2025-11 | 56 | 64% | +17 min |
| 2025-12 | 51 | 24% | +33 min |
| 2026-01 | 36 | 69% | +12 min |
| 2026-02 | 36 | 81% | -2 min |
| 2026-03 | 55 | 58% | +19 min |
| 2026-04 | 66 | 77% | +5 min |
| 2026-05 | 89 | 84% | +0 min |
| 2026-06 | 88 | 78% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 125 | 70% |
| Tue | 113 | 73% |
| Wed | 112 | 77% |
| Thu | 121 | 80% |
| Fri | 123 | 74% |
| Sat | 111 | 77% |
| Sun | 120 | 73% |
AS flight numbers on IAD → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…