Southwest Airlines
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WN 121:
Multiple routes
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Direktflüge:
Southwest Airlines WN121
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: 1:05, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-12 through 2026-02-16
Mo
Di
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-
Mi
-
-
Do
Fr
Sa
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So
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-
Duration: 2:05, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-20 through 2026-03-01
Mo
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Di
-
-
Mi
-
-
Do
Fr
Sa
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So
Duration: 2:05, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
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: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-01-19 through 2026-01-25
Mo
Di
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Mi
-
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Do
-
-
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 WN121
Effective 2026-02-01 through 2026-02-06
Mo
-
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Di
-
-
Mi
-
-
Do
Fr
Sa
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So
Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-09 through 2026-02-15
Mo
Di
-
-
Mi
-
-
Do
-
-
Fr
-
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Sa
-
-
So
Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
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 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-17 through 2026-02-23
Mo
Di
Mi
-
-
Do
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 WN121
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: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
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: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-01-06 through 2026-01-14
Mo
Di
Mi
Do
Fr
Sa
-
-
So
-
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-01-18 through 2026-01-23
Mo
-
-
Di
Mi
Do
Fr
Sa
-
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So
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-01-26 through 2026-02-04
Mo
Di
Mi
Do
Fr
Sa
-
-
So
-
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-08 through 2026-02-11
Mo
-
-
Di
Mi
Do
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-
Fr
-
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Sa
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-
So
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-18 through 2026-03-04
Mo
-
-
Di
Mi
Do
-
-
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 WN121
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: 2:50, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
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: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-03-05 through 2026-04-06
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
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So
-
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-02-12 through 2026-02-16
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 2:15, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
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 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
Effective 2026-03-07 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
So
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
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Fr
-
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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 WN121
Effective 2026-08-08 through 2026-09-26
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: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
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: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
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: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
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: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Valid until 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: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
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Sa
-
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So
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-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Valid until 2026-01-01
Mo
-
-
Di
-
-
Mi
Do
Fr
-
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Sa
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So
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-
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-06-06 through 2026-08-01
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
So
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Duration: 3:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Valid until 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: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
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: 3:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-08-04 through 2026-09-30
Mo
-
-
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 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
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: 2:10, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
Valid until 2026-01-04
Mo
Di
Mi
-
-
Do
-
-
Fr
Sa
-
-
So
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-08-06 through 2026-09-28
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
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Fr
-
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Sa
-
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So
-
-
Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-08-09 through 2026-09-27
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: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN121
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: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN121
Effective 2026-04-07 through 2026-06-03
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN121
Effective 2026-06-04 through 2026-08-03
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-07 through 2026-08-02
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 4:35, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-02-12 through 2026-02-16
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 5:15, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-02-20 through 2026-03-01
Mo
-
-
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
Duration: 5:15, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 3:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-03-07 through 2026-04-04
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
So
-
-
Duration: 4:50, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-03-08 through 2026-04-05
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 4:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-04-11 through 2026-05-30
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
So
-
-
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Valid until 2026-01-03
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
So
-
-
Duration: 5:30, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 5:30, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Operates only on 2026-05-24
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 5:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 6:55, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 7:40, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN121
Effective 2026-06-09 through 2026-07-29
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 10:00, 3-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Albuquerque (ABQ) - Houston Hobby (HOU)
- Albuquerque (ABQ) - Orlando (MCO)
- Austin (AUS) - Indianapolis (IND)
- Austin (AUS) - Orlando (MCO)
- Dallas Love Field (DAL) - Boise (BOI)
- Dallas Love Field (DAL) - Miami (MIA)
- Dallas Love Field (DAL) - Phoenix Sky Harbor (PHX)
- Denver (DEN) - Hayden (HDN)
- Denver (DEN) - Orlando (MCO)
- Denver (DEN) - Phoenix Sky Harbor (PHX)
- El Paso (ELP) - Austin (AUS)
- El Paso (ELP) - Indianapolis (IND)
- El Paso (ELP) - Orlando (MCO)
- Houston Hobby (HOU) - Dallas Love Field (DAL)
- Houston Hobby (HOU) - Miami (MIA)
- Houston Hobby (HOU) - Orlando (MCO)
- Indianapolis (IND) - Orlando (MCO)
- Kansas City (MCI) - Fort Lauderdale (FLL)
- Knoxville (TYS) - Denver (DEN)
- Knoxville (TYS) - Hayden (HDN)
- Las Vegas Harry Reid (LAS) - Austin (AUS)
- Las Vegas Harry Reid (LAS) - El Paso (ELP)
- Las Vegas Harry Reid (LAS) - Indianapolis (IND)
- Las Vegas Harry Reid (LAS) - Los Angeles (LAX)
- Las Vegas Harry Reid (LAS) - Orlando (MCO)
- Louisville (SDF) - Baltimore (BWI)
- Nashville (BNA) - Houston Hobby (HOU)
- Nashville (BNA) - Savannah (SAV)
- Phoenix Sky Harbor (PHX) - Boise (BOI)
- Raleigh/Durham (RDU) - Houston Hobby (HOU)
- Savannah (SAV) - Houston Hobby (HOU)
- Tampa (TPA) - Baltimore (BWI)
- Tampa (TPA) - Louisville (SDF)