Southwest Airlines
vol
WN 3621:
Multiple routes
HORAIRES DES VOLS
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-05 through 2026-03-06
Lun
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Mar
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Mer
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Jeu
Ven
Sam
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Dim
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Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-09 through 2026-04-06
Lun
Mar
-
-
Mer
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-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-08 through 2026-04-05
Lun
-
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Mar
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-
Mer
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-
Jeu
-
-
Ven
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Sam
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-
Dim
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-10 through 2026-04-01
Lun
-
-
Mar
Mer
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
-
-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-09 through 2026-04-06
Lun
Mar
-
-
Mer
-
-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-05 through 2026-03-06
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-02-14 through 2026-02-28
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
Dim
-
-
Duration: 3:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-01-10 through 2026-02-07
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
Dim
-
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-08-08 through 2026-09-26
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
Dim
-
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-08-04 through 2026-09-30
Lun
-
-
Mar
Mer
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
-
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-11 through 2026-05-30
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
Dim
-
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-08-09 through 2026-09-27
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Operates only on 2026-01-05
Lun
Mar
-
-
Mer
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-
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
-
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Duration: 2:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Vols directs:
Southwest Airlines WN3621
Operates only on 2026-05-24
Lun
-
-
Mar
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Mer
-
-
Jeu
-
-
Ven
-
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Sam
-
-
Dim
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-07 through 2026-06-03
Lun
-
-
Mar
Mer
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
-
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-11 through 2026-05-30
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
Dim
-
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-08-06 through 2026-09-28
Lun
Mar
-
-
Mer
-
-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 3:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-09 through 2026-06-01
Lun
Mar
-
-
Mer
-
-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Valid until 2026-01-01
Lun
-
-
Mar
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Mer
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-
Jeu
Ven
-
-
Sam
-
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Dim
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Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Operates only on 2026-05-24
Lun
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-
Mar
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Mer
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-
Jeu
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Ven
-
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Sam
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-
Dim
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-11 through 2026-05-30
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
Dim
-
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-12 through 2026-05-17
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Operates only on 2026-05-31
Lun
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Mar
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Mer
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-
Jeu
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Ven
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Sam
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Dim
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-03-14 through 2026-04-04
Lun
-
-
Mar
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-
Mer
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-
Jeu
-
-
Ven
-
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Sam
Dim
-
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-07 through 2026-06-03
Lun
-
-
Mar
Mer
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
-
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols directs:
Southwest Airlines WN3621
Operates only on 2026-03-07
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
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Sam
Dim
-
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-09 through 2026-06-01
Lun
Mar
-
-
Mer
-
-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-04-12 through 2026-05-17
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
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Sam
-
-
Dim
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Operates only on 2026-05-31
Lun
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Mar
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Mer
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-
Jeu
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Ven
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Sam
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Dim
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols directs:
Southwest Airlines WN3621
Effective 2026-06-06 through 2026-08-01
Lun
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Mar
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Mer
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Jeu
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Ven
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Sam
Dim
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Duration: 2:35, 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.
Vols indirects:
Southwest Airlines WN3621
Effective 2026-03-05 through 2026-04-06
Lun
Mar
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Mer
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-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 4:50, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols indirects:
Southwest Airlines WN3621
Effective 2026-04-11 through 2026-05-30
Lun
-
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Mar
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Mer
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Jeu
-
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Ven
-
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Sam
Dim
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-
Duration: 3:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols indirects:
Southwest Airlines WN3621
Operates only on 2026-05-24
Lun
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Mar
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Mer
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Jeu
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Ven
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Sam
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Dim
Duration: 3:30, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols indirects:
Southwest Airlines WN3621
Effective 2026-04-07 through 2026-06-03
Lun
-
-
Mar
Mer
Jeu
-
-
Ven
-
-
Sam
-
-
Dim
-
-
Duration: 3:45, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols indirects:
Southwest Airlines WN3621
Effective 2026-04-11 through 2026-05-30
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
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Sam
Dim
-
-
Duration: 3:30, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Vols indirects:
Southwest Airlines WN3621
Effective 2026-04-09 through 2026-06-01
Lun
Mar
-
-
Mer
-
-
Jeu
Ven
Sam
-
-
Dim
-
-
Duration: 3:30, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols indirects:
Southwest Airlines WN3621
Effective 2026-04-12 through 2026-05-17
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
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Sam
-
-
Dim
Duration: 3:30, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols indirects:
Southwest Airlines WN3621
Operates only on 2026-05-31
Lun
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-
Mar
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Mer
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-
Jeu
-
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Ven
-
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Sam
-
-
Dim
Duration: 3:30, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Vols indirects:
Southwest Airlines WN3621
Effective 2026-04-11 through 2026-05-30
Lun
-
-
Mar
-
-
Mer
-
-
Jeu
-
-
Ven
-
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Sam
Dim
-
-
Duration: 6:00, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Islip (ISP) - Fort Lauderdale (FLL)
- Jackson (JAN) - Houston Hobby (HOU)
- Las Vegas Harry Reid (LAS) - New Orleans (MSY)
- Las Vegas Harry Reid (LAS) - Phoenix Sky Harbor (PHX)
- Louisville (SDF) - Nashville (BNA)
- Nashville (BNA) - Houston Hobby (HOU)
- Nashville (BNA) - Jackson (JAN)
- New York LaGuardia (LGA) - Kansas City (MCI)
- Oklahoma City (OKC) - Las Vegas Harry Reid (LAS)
- Orlando (MCO) - Cleveland (CLE)
- Phoenix Sky Harbor (PHX) - New Orleans (MSY)
- Ronald Reagan Washington (DCA) - Houston Hobby (HOU)
- Ronald Reagan Washington (DCA) - Jackson (JAN)
- Ronald Reagan Washington (DCA) - Nashville (BNA)
- San Jose (SJC) - San Diego (SAN)