Southwest Airlines
flug
WN 4020:
Multiple routes
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Direktflüge:
Southwest Airlines WN4020
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: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-02-12 through 2026-02-16
Mo
Di
-
-
Mi
-
-
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 WN4020
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: 1:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
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Di
-
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Mi
-
-
Do
-
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Fr
-
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Sa
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So
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 1:15, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
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Di
-
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Mi
-
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Do
-
-
Fr
-
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Sa
-
-
So
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-07 through 2026-06-03
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
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Di
-
-
Mi
-
-
Do
-
-
Fr
-
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Sa
-
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So
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Operates only on 2026-01-01
Mo
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Di
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Mi
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Do
Fr
-
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Sa
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So
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Duration: 2:25, non-stop
Boeing 737-700 (73W)
Boeing 737-700 (73W)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-07 through 2026-06-03
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
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 WN4020
Effective 2026-04-11 through 2026-05-30
Mo
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Di
-
-
Mi
-
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Do
-
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Fr
-
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Sa
So
-
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
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So
-
-
Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-03-05 through 2026-04-06
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
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So
-
-
Duration: 3:20, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4020
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: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-03-10 through 2026-04-01
Mo
-
-
Di
Mi
Do
-
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Fr
-
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Sa
-
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So
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-
Duration: 3:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-08-06 through 2026-09-28
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
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So
-
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4020
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: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-06-06 through 2026-08-01
Mo
-
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Di
-
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Mi
-
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Do
-
-
Fr
-
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Sa
So
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-
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-03-07 through 2026-04-04
Mo
-
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Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
So
-
-
Duration: 3:20, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-06-07 through 2026-08-02
Mo
-
-
Di
-
-
Mi
-
-
Do
-
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Fr
-
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Sa
-
-
So
Duration: 4:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-06-04 through 2026-08-03
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
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So
-
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
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Di
-
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Mi
-
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Do
-
-
Fr
-
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Sa
-
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So
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
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: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direktflüge:
Southwest Airlines WN4020
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
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Di
-
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Mi
-
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Do
-
-
Fr
-
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Sa
-
-
So
Duration: 3:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
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Di
-
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Mi
-
-
Do
-
-
Fr
-
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Sa
-
-
So
Duration: 3:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
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Sa
-
-
So
Duration: 3:40, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
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Di
-
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Mi
-
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Do
-
-
Fr
-
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Sa
-
-
So
Duration: 3:40, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-07 through 2026-06-03
Mo
-
-
Di
Mi
Do
-
-
Fr
-
-
Sa
-
-
So
-
-
Duration: 3:50, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 6:20, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 5:20, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 5:20, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 6:40, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
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 WN4020
Operates only on 2026-05-31
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 WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
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Sa
-
-
So
Duration: 5:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 5:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 7:05, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 7:05, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-09 through 2026-06-01
Mo
Di
-
-
Mi
-
-
Do
Fr
Sa
-
-
So
-
-
Duration: 8:40, 2-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 7:25, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 7:25, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 9:00, 3-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 9:00, 3-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 9:10, 3-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 9:10, 3-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Effective 2026-04-12 through 2026-05-17
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
-
Sa
-
-
So
Duration: 11:05, 4-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Indirekte Flüge:
Southwest Airlines WN4020
Operates only on 2026-05-31
Mo
-
-
Di
-
-
Mi
-
-
Do
-
-
Fr
-
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Sa
-
-
So
Duration: 11:05, 4-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Buffalo (BUF) - Chicago Midway (MDW)
- Colorado Springs (COS) - Dallas Love Field (DAL)
- Denver (DEN) - Burbank (BUR)
- Denver (DEN) - Nashville (BNA)
- Denver (DEN) - Pensacola (PNS)
- Fort Myers (RSW) - Baltimore (BWI)
- Las Vegas Harry Reid (LAS) - Buffalo (BUF)
- Las Vegas Harry Reid (LAS) - Chicago Midway (MDW)
- Las Vegas Harry Reid (LAS) - Denver (DEN)
- Las Vegas Harry Reid (LAS) - Nashville (BNA)
- Las Vegas Harry Reid (LAS) - Pensacola (PNS)
- Long Beach (LGB) - Denver (DEN)
- Long Beach (LGB) - Las Vegas Harry Reid (LAS)
- Long Beach (LGB) - Nashville (BNA)
- Long Beach (LGB) - Pensacola (PNS)
- Manchester (MHT) - Orlando (MCO)
- Pensacola (PNS) - Nashville (BNA)
- Reno (RNO) - Buffalo (BUF)
- Reno (RNO) - Chicago Midway (MDW)
- Reno (RNO) - Denver (DEN)
- Reno (RNO) - Las Vegas Harry Reid (LAS)
- San Francisco (SFO) - Phoenix Sky Harbor (PHX)
- San Jose (SJC) - Denver (DEN)
- San Jose (SJC) - Las Vegas Harry Reid (LAS)
- San Jose (SJC) - Long Beach (LGB)
- San Jose (SJC) - Nashville (BNA)
- San Jose (SJC) - Pensacola (PNS)
- Tampa (TPA) - Denver (DEN)