Flight profile · Alaska Airlines
AS1
Washington (DCA) to Seattle (SEA) · scheduled 8:00 AM – 10:49 AM
How AS1 performs
1,096 operations, 2023-07-01 to 2026-06-30.
AS1 arrived on time 85.9% of the time, against 79.1% for all DCA → SEA flights — this specific departure is 6.7 percentage points better than the route as a whole. Against Alaska Airlines’s own flights on this route it is 4.9 points better.
Source: US DOT Bureau of Transportation Statistics · 1,096 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS1 | 85.9% | 1.00% | -10 min | 2.4% | 1,096 |
| Alaska Airlines on DCA → SEA | 81.0% | 0.91% | -8 min | 5.4% | 2,189 |
| All DCA → SEA flights | 79.1% | 1.20% | -8 min | 6.7% | 2,668 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does AS1 run worse on particular days?
Saturday is historically the most reliable day and Thursday the least, a gap of 10.4 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 1,096 records of AS1 operating DCA → SEA, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.