Flight OddsAS737 SEA → IAD
Alaska Airlines · Seattle, WA to Washington, DC · 175 flights observed, 2026-01-07 to 2026-06-30 · 2,305 mi
AS737 covers more than one route in the data window — the stats below are for SEA → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-9 min
90th percentile
+30 min
Cancellation rate
1%
How often is AS737 on time?
Across 175 flights on SEA → IAD from 2026-01-07 to 2026-06-30, AS737 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +30 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 145 | 84% |
| 16-30 min | 10 | 6% |
| 31-60 min | 12 | 7% |
| 61-120 min | 4 | 2% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 75% | +3 min |
| 2026-02 | 28 | 89% | -11 min |
| 2026-03 | 31 | 84% | -1 min |
| 2026-04 | 30 | 83% | -2 min |
| 2026-05 | 30 | 83% | -9 min |
| 2026-06 | 30 | 87% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 84% |
| Tue | 25 | 88% |
| Wed | 24 | 79% |
| Thu | 25 | 84% |
| Fri | 25 | 84% |
| Sat | 25 | 80% |
| Sun | 24 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…