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Southwest Airlines

Is WN3421 delayed?

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

Arrived

34 min late

Updated

Departure

Denver

DEN

Actual

Scheduled 19:30

Aug 31

Arrival

Sacramento

SMF

Actual

Scheduled 04:00

Sep 1

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

Recent arrivals

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

  • DEN → SMF

    21 min late

  • DEN → SMF

    2 min late

  • DEN → SMF

    97 min late

  • DEN → SMF

    116 min late

  • DEN → SMF

    52 min late
Flight history and details

Aug 25, 2026 — Sep 24, 2026

Observed arrivals
14
Arrivals over 15 minutes late
8
Observed cancellations
0
Observed occurrences
14

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

WN3421 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 21, 2026ArrivedDenverSacramento
21
Sep 20, 2026ArrivedDenverSacramento
2
Sep 18, 2026ArrivedDenverSacramento
97
Sep 17, 2026ArrivedDenverSacramento
116
Sep 14, 2026ArrivedDenverSacramento
52
Sep 11, 2026ArrivedDenverSacramento
69
Sep 10, 2026ArrivedDenverSacramento
-12
Sep 7, 2026ArrivedDenverSacramento
29
Sep 4, 2026ArrivedDenverSacramento
27
Sep 3, 2026ArrivedDenverSacramento
13
Aug 31, 2026ArrivedDenverSacramento
34
Aug 30, 2026ArrivedDenverSacramento
9
Aug 28, 2026ArrivedDenverSacramento
8
Aug 27, 2026ArrivedDenverSacramento
3

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