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Southwest Airlines

Is WN3421 delayed?

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

Arrived

8 min late

Updated

Departure

Denver

DEN

Actual

Scheduled 19:30

Aug 28

Arrival

Sacramento

SMF

Actual

Scheduled 04:00

Aug 29

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

    2 min late

  • DEN → SMF

    97 min late

  • DEN → SMF

    116 min late

  • DEN → SMF

    52 min late

  • DEN → SMF

    69 min late
Flight history and details

Aug 22, 2026 — Sep 21, 2026

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

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 20, 2026ArrivedDenverSacramento
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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
Aug 24, 2026ArrivedDenverSacramento
97
Aug 23, 2026ArrivedDenverSacramento
-14

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