Flight profile · Alaska Airlines
AS372
Seattle (SEA) to Austin (AUS) · scheduled 5:56 PM – 11:59 PM
How AS372 performs
328 operations, 2025-03-20 to 2026-06-30.
AS372 arrived on time 71.9% of the time, against 77.6% for all SEA → AUS flights — this specific departure is 5.7 percentage points worse than the route as a whole. Against Alaska Airlines’s own flights on this route it is 3.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 328 operations between 2025-03-20 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS372 | 71.9% | 0.30% | -2 min | 5.5% | 328 |
| Alaska Airlines on SEA → AUS | 75.1% | 0.63% | 0 min | 4.6% | 3,505 |
| All SEA → AUS flights | 77.6% | 0.65% | -3 min | 5.5% | 6,188 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-03-20 to 2026-06-30
Other routes AS372 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 AS372 currently operates. Blending them would produce an average of two different flights.
Why AS372 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for AS372 on SEA → AUS. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on SEA → AUS
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL739 | Delta Air Lines | 86.5% | 11 min early | 650 |
| AS502 | Alaska Airlines | 81.6% | 3 min early | 1,073 |
| DL831 | Delta Air Lines | 78.0% | 7 min early | 646 |
| AS318 | Alaska Airlines | 70.0% | 3 min late | 646 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 328 records of AS372 operating SEA → AUS, 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.
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