Southwest Airlines
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WN 4637:
Multiple routes
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Direktflüge:
Southwest Airlines WN4637
Effective 2026-06-04 through 2026-08-03
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Mi
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Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4637
Effective 2026-06-07 through 2026-08-02
Mo
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Mi
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Do
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Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4637
Effective 2026-04-09 through 2026-05-22
Mo
Di
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Mi
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Do
Fr
Sa
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Duration: 0:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
Effective 2026-05-25 through 2026-06-01
Mo
Di
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Mi
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Do
Fr
Sa
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Duration: 0:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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
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Duration: 0:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:50, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4637
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: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4637
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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Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4637
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: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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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Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
Effective 2026-01-10 through 2026-01-31
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
So
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Duration: 1:35, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4637
Operates only on 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: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4637
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: 1:20, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4637
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: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 3:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4637
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: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Albany (ALB) - Baltimore (BWI)
- Chicago Midway (MDW) - Los Angeles (LAX)
- Denver (DEN) - Chicago Midway (MDW)
- Denver (DEN) - Nashville (BNA)
- Nashville (BNA) - Chicago Midway (MDW)
- Phoenix Sky Harbor (PHX) - Burbank (BUR)
- Sacramento (SMF) - Denver (DEN)
- Tucson (TUS) - Burbank (BUR)
- Tucson (TUS) - Phoenix Sky Harbor (PHX)
- West Palm Beach (PBI) - Saint Louis (STL)