Southwest Airlines
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WN 2121:
Multiple routes
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Direktflüge:
Southwest Airlines WN2121
Effective 2026-03-05 through 2026-04-06
Mo
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Mi
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Do
Fr
Sa
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So
Duration: 2:05, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
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: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 4:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 4:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 4:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:35, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
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: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
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: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
Effective 2026-02-01 through 2026-02-06
Mo
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Di
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Mi
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Do
Fr
Sa
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So
Duration: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
Effective 2026-02-09 through 2026-02-15
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: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
Effective 2026-02-17 through 2026-02-23
Mo
Di
Mi
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Do
Fr
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Sa
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So
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Duration: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
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: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
Effective 2026-01-06 through 2026-01-14
Mo
Di
Mi
Do
Fr
Sa
-
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So
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Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
Effective 2026-01-18 through 2026-01-23
Mo
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Di
Mi
Do
Fr
Sa
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So
Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
Effective 2026-01-26 through 2026-02-04
Mo
Di
Mi
Do
Fr
Sa
-
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So
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Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 3:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
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: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 1:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN2121
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: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN2121
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: 2:45, 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.
Direktflüge:
Southwest Airlines WN2121
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: 2:45, 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 WN2121
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 WN2121
Operates only on 2026-01-05
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: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN2121
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: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 7:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 7:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 7:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 6:45, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 4:00, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Indirekte Flüge:
Southwest Airlines WN2121
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: 3:40, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN2121
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: 3:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 3:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN2121
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: 9:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Burbank (BUR) - Phoenix Sky Harbor (PHX)
- Dallas Love Field (DAL) - Denver (DEN)
- Denver (DEN) - Boston Logan (BOS)
- Kansas City (MCI) - Nashville (BNA)
- Las Vegas Harry Reid (LAS) - Austin (AUS)
- Las Vegas Harry Reid (LAS) - El Paso (ELP)
- Las Vegas Harry Reid (LAS) - Salt Lake City (SLC)
- Las Vegas Harry Reid (LAS) - San Diego (SAN)
- Long Beach (LGB) - Sacramento (SMF)
- Nashville (BNA) - Long Beach (LGB)
- Nashville (BNA) - Sacramento (SMF)
- Oakland (OAK) - El Paso (ELP)
- Oakland (OAK) - Las Vegas Harry Reid (LAS)
- Oakland (OAK) - Salt Lake City (SLC)
- Oakland (OAK) - San Diego (SAN)
- Ronald Reagan Washington (DCA) - Long Beach (LGB)
- Ronald Reagan Washington (DCA) - Nashville (BNA)
- Ronald Reagan Washington (DCA) - Sacramento (SMF)