AS409 · ASA409

ASA409 over the last 30 days

As of 2026-10-29

ASA409 is operated by Alaska Airlines on the route Washington Dulles International Airport (IAD/KIAD) → Seattle–Tacoma International Airport (SEA/KSEA). It usually takes off around 11:15 UTC (07:15 local time, IAD). It usually lands around 16:27 UTC (09:27 local time, SEA). Most frequent aircraft type: BOEING 737-900 (B739).

Days with an observed flight (last 30 days)

27/30

Days of the week with an observed flight

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

Typical take-off

11:15 UTC · 07:15 local time (IAD)

Typical landing

16:27 UTC · 09:27 local time (SEA)

Median departure deviation from the usual time on this route

+1 min

Departures within 15 minutes of the usual time

74 %

Departures measured

43

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: 28
• BOEING 737 MAX 9 (B39M) — Number of flights: 24
• BOEING 737 MAX 8 (B38M) — Number of flights: 2

Aircraft in the last 7 days

• N215AK · BOEING 737-900 2026-10-29
• N962AK · BOEING 737 MAX 9 2026-10-28
• N464AS · BOEING 737-900 2026-10-27
• N270AK · BOEING 737-900 2026-10-26
• N938AK · BOEING 737 MAX 9 2026-10-25
• N953AK · BOEING 737 MAX 9 2026-10-24

Related flights on this route

• All flights KIAD – KSEA