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Southwest Airlines

Is WN437 delayed?

Service date: · Scheduled departure date (UTC)

Arrived

10 min early

Official source · Updated

Departure

Buffalo

BUF

Actual

Scheduled 11:01

Sep 4

Arrival

Denver

DEN

Actual

Scheduled 08:07

Sep 4

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Recent arrivals

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

  • BUF → DEN

    9 min early

  • BDL → BWI

    21 min late

  • BDL → BWI

    23 min late

  • BDL → BWI

    8 min early

  • BUF → DEN

    6 min late
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
12
Arrivals over 15 minutes late
2
Observed cancellations
0
Observed occurrences
13

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

WN437 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 18, 2026ArrivedBuffaloDenver
View this flight’s market
-9
Sep 16, 2026ArrivedHartfordBaltimore
21
Sep 15, 2026ArrivedHartfordBaltimore
23
Sep 12, 2026ArrivedHartfordBaltimore
-8
Sep 10, 2026ArrivedBuffaloDenver
6
Sep 9, 2026ArrivedHartfordBaltimore
-6
Sep 7, 2026ArrivedBuffaloDenver
-12
Sep 6, 2026ArrivedOmahaChicago
-15
Sep 5, 2026ArrivedHartfordBaltimore
-11
Sep 5, 2026ArrivedOrlandoHartford
-12
Sep 4, 2026ArrivedBuffaloDenver
-10
Aug 29, 2026ArrivedOrlandoHartford
-5

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