AS503 · ASA503

ASA503 over the last 30 days

As of 2026-10-26

ASA503 is operated by Alaska Airlines on the route Austin Bergstrom International Airport (AUS/KAUS) → Seattle–Tacoma International Airport (SEA/KSEA). It usually takes off around 20:59 UTC (15:59 local time, AUS). It usually lands around 00:48 UTC (17:48 local time, SEA). Most frequent aircraft type: BOEING 737-900 (B739).

Days with an observed flight (last 30 days)

29/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

20:59 UTC · 15:59 local time (AUS)

Typical landing

00:48 UTC · 17:48 local time (SEA)

Typical time airborne

228 min

Median departure deviation from the usual time on this route

+3 min

Departures within 15 minutes of the usual time

77 %

Departures measured

57

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737-900 (B739) — Number of flights: 19
• BOEING 737 MAX 9 (B39M) — Number of flights: 16
• BOEING 737-800 (B738) — Number of flights: 4

Aircraft in the last 7 days

• N253AK · BOEING 737-900 2026-10-26
• N284AK · BOEING 737-900 2026-10-26
• N734AL · BOEING 737 MAX 9 2026-10-24
• N469AS · BOEING 737-900 2026-10-23
• N919AK · BOEING 737 MAX 9 2026-10-22
• N413AS · BOEING 737-900 2026-10-21

Related flights on this route

• All flights KAUS – KSEA