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Alaska Airlines, Inc.

Is AS309 delayed?

Service date: · Scheduled departure date (America/Denver)

Arrived

81 min late

Updated

Departure

Denver

DEN

Actual

Scheduled 17:34

Aug 24

Arrival

Seattle

SEA

Actual

Scheduled 19:34

Aug 24

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Route overview: Denver → SeattleDENSEA
Route overview

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • DEN → SEA

    5 min late

  • DEN → SEA

    53 min late

  • DEN → SEA

    63 min late

  • DEN → SEA

    30 min late

  • DEN → SEA

    16 min late
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
21
Arrivals over 15 minutes late
12
Observed cancellations
0
Observed occurrences
23

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

AS309 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedDenverSeattle
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5
Sep 15, 2026ArrivedDenverSeattle
53
Sep 14, 2026ArrivedDenverSeattle
63
Sep 13, 2026ArrivedDenverSeattle
30
Sep 11, 2026ArrivedDenverSeattle
16
Sep 10, 2026ArrivedDenverSeattle
73
Sep 9, 2026ArrivedDenverSeattle
11
Sep 8, 2026ArrivedDenverSeattle
54
Sep 7, 2026ArrivedDenverSeattle
24
Sep 6, 2026ArrivedDenverSeattle
2
Sep 4, 2026ArrivedDenverSeattle
66
Sep 3, 2026ArrivedDenverSeattle
-11
Sep 2, 2026ArrivedDenverSeattle
10
Sep 1, 2026ArrivedDenverSeattle
-11
Aug 31, 2026ArrivedDenverSeattle
20
Aug 30, 2026ArrivedDenverSeattle
17
Aug 28, 2026ArrivedDenverSeattle
-17
Aug 27, 2026ArrivedDenverSeattle
-15
Aug 26, 2026ArrivedDenverSeattle
5
Aug 24, 2026ArrivedDenverSeattle
81
Aug 23, 2026ArrivedDenverSeattle
108

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