Southwest Airlines
flug
WN 421:
Multiple routes
FLUGPLAN
Direktflüge:
Southwest Airlines WN421
Effective 2026-04-11 through 2026-05-30
Mo
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Di
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Mi
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Do
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Fr
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Sa
So
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Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-04-12 through 2026-05-17
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Operates only on 2026-05-31
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-03-08 through 2026-04-05
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-04-09 through 2026-06-01
Mo
Di
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Mi
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Do
Fr
Sa
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So
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Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Valid until 2026-01-01
Mo
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Di
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Mi
Do
Fr
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Sa
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So
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Duration: 2:30, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-04-07 through 2026-06-03
Mo
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Di
Mi
Do
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Fr
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Sa
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So
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Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Operates only on 2026-05-24
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-03-10 through 2026-04-01
Mo
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Di
Mi
Do
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Fr
-
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Sa
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So
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Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-03-05 through 2026-04-06
Mo
Di
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Mi
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Do
Fr
Sa
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So
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Duration: 1:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-06-04 through 2026-08-03
Mo
Di
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Mi
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Do
Fr
Sa
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So
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Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-04-07 through 2026-06-03
Mo
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Di
Mi
Do
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Fr
-
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Sa
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So
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Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-08-06 through 2026-09-28
Mo
Di
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Mi
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Do
Fr
Sa
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So
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Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-08-04 through 2026-09-30
Mo
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Di
Mi
Do
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Fr
-
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Sa
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So
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Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-10 through 2026-02-07
Mo
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Di
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Mi
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Do
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Fr
-
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Sa
So
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-06 through 2026-01-14
Mo
Di
Mi
Do
Fr
Sa
-
-
So
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-
Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-18 through 2026-01-23
Mo
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Di
Mi
Do
Fr
Sa
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So
Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-26 through 2026-02-04
Mo
Di
Mi
Do
Fr
Sa
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So
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-08 through 2026-02-11
Mo
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Di
Mi
Do
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Fr
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Sa
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So
Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-18 through 2026-03-04
Mo
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Di
Mi
Do
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Fr
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Sa
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So
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-14 through 2026-02-28
Mo
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Di
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Mi
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Do
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Fr
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Sa
So
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-05 through 2026-02-09
Mo
Di
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Mi
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Do
Fr
Sa
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So
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-15 through 2026-02-19
Mo
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Di
Mi
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Do
Fr
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Sa
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So
Duration: 0:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Operates only on 2026-02-23
Mo
Di
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Mi
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Do
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Fr
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Sa
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So
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Duration: 0:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Operates only on 2026-03-02
Mo
Di
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Mi
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Do
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Fr
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Sa
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So
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-11 through 2026-01-16
Mo
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Di
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Mi
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Do
Fr
Sa
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So
Duration: 1:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-19 through 2026-01-25
Mo
Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 1:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Operates only on 2026-02-01
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 1:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN421
Effective 2026-03-07 through 2026-04-04
Mo
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Di
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Mi
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Do
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Fr
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Sa
So
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Duration: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-12 through 2026-02-16
Mo
Di
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Mi
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Do
Fr
Sa
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So
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Duration: 0:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-02-20 through 2026-03-01
Mo
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Di
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Mi
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Do
Fr
Sa
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So
Duration: 0:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN421
Effective 2026-08-09 through 2026-09-27
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 4:15, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Direktflüge:
Southwest Airlines WN421
Operates only on 2026-01-03
Mo
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Di
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Mi
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Do
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Fr
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Sa
So
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Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-01-02 through 2026-01-04
Mo
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Di
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Mi
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Do
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Fr
Sa
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So
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-06-07 through 2026-08-02
Mo
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Di
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Mi
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Do
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Fr
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Sa
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So
Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN421
Effective 2026-06-09 through 2026-07-29
Mo
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Di
Mi
Do
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Fr
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Sa
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So
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Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Indirekte Flüge:
Southwest Airlines WN421
Effective 2026-04-07 through 2026-06-03
Mo
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Di
Mi
Do
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Fr
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Sa
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So
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Duration: 5:10, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Albuquerque (ABQ) - Los Angeles (LAX)
- Atlanta (ATL) - Orlando (MCO)
- Austin (AUS) - Phoenix Sky Harbor (PHX)
- Colorado Springs (COS) - Denver (DEN)
- Dallas Love Field (DAL) - Orlando (MCO)
- Denver (DEN) - Sacramento (SMF)
- Denver (DEN) - San Antonio (SAT)
- Hartford (BDL) - Baltimore (BWI)
- Kansas City (MCI) - Austin (AUS)
- Kansas City (MCI) - Phoenix Sky Harbor (PHX)
- Las Vegas Harry Reid (LAS) - Pittsburgh (PIT)
- Orlando (MCO) - Baltimore (BWI)
- San Diego (SAN) - Albuquerque (ABQ)
- San Diego (SAN) - Denver (DEN)