AS503: Alaska flight 503
Austin (AUS) → Seattle (SEA) · departs 3:38p, lands 6:13p local · Daily
The timetable below has every scheduled departure; for today's flight, check Alaska.
An estimate from the published timetable, not live tracking: it cannot know about delays, diversions or cancellations.
Live status at Alaska →The route
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AS503 timetable
Published departure and arrival times, each in its airport's local time, from the flights we sampled Oct 25–31.
| Route | Departs | Arrives | Scheduled | Days |
|---|---|---|---|---|
| AUS → SEAAustin to Seattle | 3:38p | 6:13p | 4h35m | Daily |
Other nonstops from Austin to Seattle
The departures either side of AS503. Times are Austin time.
| Flight | Departs | Days |
|---|---|---|
| Delta DL780 | 6:00a | Daily |
| Alaska AS224 | 8:30a | Daily |
| Delta DL396 | 10:52a | Daily |
| This flight AS503 | 3:38p | Daily |
| Delta DL631 | 6:05p | Mon, Tue, Wed, Thu, Fri, Sun |
| Alaska AS339 | 7:07p | Mon, Tue, Wed, Thu, Fri, Sun |
All 9 flights from AUS to SEA, by time →
Flying back from Seattle
Alaska flies Seattle to Austin nonstop 21 times a week, from 8:15a to 5:08p: 8:15a AS352 · 11:41a AS502 · 5:08p AS372 · every nonstop SEA → AUS →
How AS503 ran in our sample
7 of 7 departures left within 15 minutes of schedule (Oct 25–31). Only flights that departed are counted: cancellations are not in our data.
Aircraft: Boeing 737-800 on 3 of 7; also Boeing 737 MAX 9 (2), Boeing 737-900 (2).
What time does AS503 leave Austin?
AS503 is scheduled to depart Austin (AUS) at 3:38p (daily), Austin time, and to land in Seattle (SEA) at about 6:13p local time, a scheduled 4h35m. Times are the published ones from the flights we sampled Oct 25–31; check Alaska for today's.
What plane is AS503?
Boeing 737-800 on 3 of the 7 AS503 flights from AUS we sampled Oct 25–31; the rest were a Boeing 737 MAX 9 or Boeing 737-900. Airlines swap aircraft, so the plane on a given day can differ.
Does AS503 fly every day?
Yes — AS503 flew Austin to Seattle every day of the week we sampled (Oct 25–31).
Is AS503 usually on time?
Of 7 AS503 departures from AUS we sampled Oct 25–31, 7 left within 15 minutes of the scheduled time. That counts only flights that departed — cancellations are not in our data — and one week is a small sample, so treat it as a hint, not a rating.
More Alaska flights from Austin
Timetable from Alaska departures we observed; AS503 is a Alaska Airlines flight number, and Hop Nonstop is not affiliated with Alaska. Schedules change — confirm with the airline before you travel.