Flight OddsAS409 IAD → SEA
Alaska Airlines · Washington, DC to Seattle, WA · 82 flights observed, 2025-10-26 to 2026-06-30 · 2,305 mi
AS409 covers more than one route in the data window — the stats below are for IAD → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+15 min
90th percentile
+71 min
Cancellation rate
2%
How often is AS409 on time?
Across 82 flights on IAD → SEA from 2025-10-26 to 2026-06-30, AS409 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +15 min, and the worst 10% of flights arrived +71 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 40 | 50% |
| 16-30 min | 15 | 19% |
| 31-60 min | 14 | 18% |
| 61-120 min | 9 | 11% |
| 2+ hrs | 2 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 5 | 60% | +11 min |
| 2025-11 | 27 | 59% | +24 min |
| 2025-12 | 21 | 14% | +34 min |
| 2026-01 | 6 | 33% | +32 min |
| 2026-06 | 21 | 76% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 43% |
| Tue | 10 | 40% |
| Wed | 9 | 67% |
| Thu | 11 | 64% |
| Fri | 12 | 50% |
| Sat | 11 | 55% |
| Sun | 13 | 38% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…