AS591 · ASA591

ASA591 over the last 30 days

As of 2026-10-30

ASA591 is operated by Alaska Airlines on the route San Francisco International Airport (SFO/KSFO) → Seattle–Tacoma International Airport (SEA/KSEA). It usually takes off around 02:50 UTC (19:50 local time, SFO). It usually lands around 04:29 UTC (21:29 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

02:50 UTC · 19:50 local time (SFO)

Typical landing

04:29 UTC · 21:29 local time (SEA)

Typical time airborne

94 min

Median departure deviation from the usual time on this route

+5 min

Departures within 15 minutes of the usual time

63 %

Departures measured

176

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: 25
• BOEING 737 MAX 9 (B39M) — Number of flights: 18

Aircraft in the last 7 days

• N958AK · BOEING 737 MAX 9 2026-10-30
• N408AS · BOEING 737-900 2026-10-29
• N467AS · BOEING 737-900 2026-10-28
• N719AL · BOEING 737 MAX 9 2026-10-27
• N277AK · BOEING 737-900 2026-10-26
• N926AK · BOEING 737 MAX 9 2026-10-25

Related flights on this route

• All flights KSFO – KSEA