Flight profile · Alaska Airlines
AS378
Seattle (SEA) to Baltimore (BWI) · scheduled 9:55 AM – 5:59 PM
How AS378 performs
927 operations, 2023-07-01 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 927 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS378 | 78.4% | 1.19% | -4 min | 3.3% | 927 |
| Alaska Airlines on SEA → BWI | 80.0% | 0.71% | -4 min | 3.1% | 1,698 |
| All SEA → BWI flights | 79.3% | 0.65% | -3 min | 3.4% | 1,853 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does AS378 run worse on particular days?
Saturday is historically the most reliable day and Friday the least, a gap of 10.1 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.
Other routes AS378 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
Because the same number has served different journeys, the statistics above describe only the route AS378 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 927 records of AS378 operating SEA → BWI, 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.