Southwest Airlines
vuelo
WN 4321:
Multiple routes
HORARIO DE VUELOS
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-02-12 through 2026-02-16
Lun
Mar
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-
Mie
-
-
Jue
Vie
Sab
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-
Dom
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-
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-02-14 through 2026-02-28
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
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-
Sab
Dom
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-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-02-20 through 2026-03-01
Lun
-
-
Mar
-
-
Mie
-
-
Jue
Vie
Sab
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-
Dom
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vuelos directos:
Southwest Airlines WN4321
Valid until 2026-01-01
Lun
-
-
Mar
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-
Mie
Jue
Vie
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-
Sab
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Dom
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Duration: 1:20, non-stop
Boeing 737-700 (73W)
Boeing 737-700 (73W)
Vuelos directos:
Southwest Airlines WN4321
Operates only on 2026-01-05
Lun
Mar
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Mie
-
-
Jue
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Vie
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-
Sab
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Dom
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Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-08-09 through 2026-09-27
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
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-
Sab
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-
Dom
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-01-02 through 2026-01-04
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
Sab
-
-
Dom
Duration: 3:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-02-14 through 2026-02-28
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
-
-
Sab
Dom
-
-
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-08-06 through 2026-09-28
Lun
Mar
-
-
Mie
-
-
Jue
Vie
Sab
-
-
Dom
-
-
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-08-04 through 2026-09-30
Lun
-
-
Mar
Mie
Jue
-
-
Vie
-
-
Sab
-
-
Dom
-
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-08-08 through 2026-09-26
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
-
-
Sab
Dom
-
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-03-07 through 2026-04-04
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
-
-
Sab
Dom
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-
Duration: 5:40, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-06-09 through 2026-07-29
Lun
-
-
Mar
Mie
Jue
-
-
Vie
-
-
Sab
-
-
Dom
-
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos directos:
Southwest Airlines WN4321
Valid until 2026-01-03
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
-
-
Sab
Dom
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-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-06-06 through 2026-08-01
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
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-
Sab
Dom
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-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vuelos directos:
Southwest Airlines WN4321
Effective 2026-06-04 through 2026-08-03
Lun
Mar
-
-
Mie
-
-
Jue
Vie
Sab
-
-
Dom
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vuelos no directos:
Southwest Airlines WN4321
Effective 2026-02-14 through 2026-02-28
Lun
-
-
Mar
-
-
Mie
-
-
Jue
-
-
Vie
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-
Sab
Dom
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-
Duration: 7:00, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
This flight number is listed as serving the following routes:
- Baltimore (BWI) - Austin (AUS)
- Baltimore (BWI) - Islip (ISP)
- Baltimore (BWI) - Miami (MIA)
- Fort Lauderdale (FLL) - Chicago Midway (MDW)
- Fort Lauderdale (FLL) - Las Vegas Harry Reid (LAS)
- Greenville/Spartanburg (GSP) - Nashville (BNA)
- Miami (MIA) - Austin (AUS)
- Norfolk (ORF) - Baltimore (BWI)
- Sacramento (SMF) - Burbank (BUR)
- Santa Ana (SNA) - Nashville (BNA)