Southwest Airlines flight WN 621: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 05:40 Oklahoma City (OKC) 09:25 Orlando (MCO)
WN 621 Non-stop Boeing 737-700 (73W) 2:45 Effective 2025-06-07 through 2025-08-02
Thu 07:50 Nashville (BNA) 09:40 Kansas City (MCI)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Operates only on 2025-11-27
Sat 08:15 Midway, Chicago (MDW) 10:30 Portland (PDX)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2025-08-09 through 2025-09-27
Sun 08:25 Baltimore (BWI) 10:15 Grand Rapids (GRR)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-10-05 through 2025-10-26
Mon,Thu-Sat 10:10 Burbank (BUR) 11:25 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737-700 (73W) 1:15 Valid until 2025-06-02
Sun 10:25 Phoenix Sky Harbor (PHX) 4 15:10 Des Moines (DSM)
WN 621 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2025-05-25
Sun 10:50 Grand Rapids (GRR) 11:25 Nashville (BNA)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-10-05 through 2025-10-26
Sat 11:00 Baltimore (BWI) 12:45 Grand Rapids (GRR)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2025-10-04 through 2025-11-01
Tue,Wed 11:20 Phoenix Sky Harbor (PHX) 4 16:00 Des Moines (DSM)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Valid until 2025-06-04
Sun 11:20 Phoenix Sky Harbor (PHX) 4 16:00 Des Moines (DSM)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Valid until 2025-05-18
Sun 11:20 Phoenix Sky Harbor (PHX) 4 16:00 Des Moines (DSM)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Operates only on 2025-06-01
Sat 11:20 Portland (PDX) 13:35 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-08-09 through 2025-09-27
Tue,Wed 11:25 Austin (AUS) 12:15 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-06-10 through 2025-07-30
Mon,Thu,Fri 12:00 Las Vegas Harry Reid (LAS) 1 16:55 Des Moines (DSM)
WN 621 Non-stop Boeing 737-700 (73W) 2:55 Valid until 2025-06-02
Sun 12:10 Nashville (BNA) 14:40 Burbank (BUR)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 4:30 Effective 2025-10-05 through 2025-10-26
Sun 13:00 Santa Ana (SNA) 16:20 Denver (DEN)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Operates only on 2025-08-31
Sun 14:00 Santa Ana (SNA) 17:20 Denver (DEN)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2025-08-10 through 2025-08-24
Sun 14:00 Santa Ana (SNA) 17:20 Denver (DEN)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2025-09-07 through 2025-09-28
Sun 14:00 Midway, Chicago (MDW) 16:10 John Glenn Columbus (CMH)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Operates only on 2025-11-30
Mon,Thu,Fri 15:30 Sacramento (SMF) B 17:25 Phoenix Sky Harbor (PHX) 4
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2025-10-02 through 2025-10-31
Tue,Wed 16:45 Des Moines (DSM) 17:50 Saint Louis (STL) 2
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 1:05 Valid until 2025-06-04
Sun 16:45 John Glenn Columbus (CMH) 19:05 Tampa (TPA)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Operates only on 2025-11-30
Tue,Wed 16:50 Portland (PDX) 19:05 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737-800 (73H) 2:15 Effective 2025-08-05 through 2025-10-01
Tue,Wed 17:20 Tampa (TPA) 19:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Effective 2025-11-04 through 2025-11-12
Mon-Thu 17:20 Tampa (TPA) 19:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Effective 2025-11-17 through 2025-11-20
Mon-Fri 17:20 Tampa (TPA) 19:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Effective 2025-12-02 through 2025-12-11
Mon-Wed 17:20 Tampa (TPA) 19:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Effective 2025-12-15 through 2025-12-17
Wed,Thu 17:20 Tampa (TPA) 19:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:40 Effective 2025-12-24 through 2026-01-01
Mon,Thu,Fri 17:30 Des Moines (DSM) 18:35 Saint Louis (STL) 2
WN 621 Non-stop Boeing 737-700 (73W) 1:05 Valid until 2025-06-02
Tue,Wed 17:45 Sacramento (SMF) B 19:40 Phoenix Sky Harbor (PHX) 4
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2025-10-07 through 2025-10-29
Mon,Thu,Fri 18:05 Phoenix Sky Harbor (PHX) 4 00:50 Tampa (TPA)
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 3:45 Effective 2025-10-02 through 2025-10-31
The flight arrives 1 day after departure.
Mon,Thu,Fri,Sun 19:15 Tampa (TPA) 21:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 19:15 Tampa (TPA) 21:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-11-21 through 2025-11-28
Fri,Sun 19:15 Tampa (TPA) 21:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-12-07 through 2025-12-14
Thu 19:15 Tampa (TPA) 21:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2025-12-18
Mon 19:15 Tampa (TPA) 21:00 Austin (AUS)
WN 621 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2026-01-05
Sun 19:40 Tampa (TPA) 21:20 Austin (AUS)
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 2:40 Operates only on 2025-11-30
Sun 21:10 Austin (AUS) 22:00 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-06-08 through 2025-08-03
Mon,Thu,Fri 21:40 Austin (AUS) 22:30 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 21:40 Austin (AUS) 22:30 Las Vegas Harry Reid (LAS) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-07-07 through 2025-08-04
Mon,Thu,Fri,Sun 21:40 Austin (AUS) 23:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 21:40 Austin (AUS) 23:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Effective 2025-11-21 through 2025-11-28
Fri,Sun 21:40 Austin (AUS) 23:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Effective 2025-12-07 through 2025-12-14
Thu 21:40 Austin (AUS) 23:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Operates only on 2025-12-18
Mon 21:40 Austin (AUS) 23:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Operates only on 2026-01-05
Sun 21:55 Austin (AUS) 23:05 Ontario, Los Angeles (ONT) 4
WN 621 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Operates only on 2025-11-30
Sat 22:40 Austin (AUS) 00:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2025-11-22 through 2025-11-29
The flight arrives 1 day after departure.
Mon-Wed 22:40 Austin (AUS) 00:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Effective 2025-11-25 through 2025-12-01
The flight arrives 1 day after departure.
Mon,Tue,Fri,Sun 22:40 Austin (AUS) 00:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737-800 (73H) 3:25 Effective 2025-12-19 through 2026-01-04
The flight arrives 1 day after departure.
Sat 22:40 Austin (AUS) 00:05 Los Angeles (LAX) 1
WN 621 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2025-12-20 through 2026-01-03
The flight arrives 1 day after departure.
Non-Direct Flights:
Sat 08:15 Midway, Chicago (MDW) 13:35 Las Vegas Harry Reid (LAS) 1
WN 621 1-stop Boeing 737 MAX 8 (7M8) 7:20 Effective 2025-08-09 through 2025-09-27
Sun 08:25 Baltimore (BWI) 11:25 Nashville (BNA)
WN 621 1-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2025-10-05 through 2025-10-26
Mon,Thu,Fri 10:10 Burbank (BUR) 16:55 Des Moines (DSM)
WN 621 1-stop Boeing 737-700 (73W) 4:45 Valid until 2025-06-02
Sun 10:50 Grand Rapids (GRR) 14:40 Burbank (BUR)
WN 621 1-stop Boeing 737-700 (Scimitar Winglets) 6:50 Effective 2025-10-05 through 2025-10-26
Tue,Wed 11:20 Phoenix Sky Harbor (PHX) 4 17:50 Saint Louis (STL) 2
WN 621 1-stop Boeing 737 MAX 8 (7M8) 4:30 Valid until 2025-06-04
Mon,Thu,Fri 12:00 Las Vegas Harry Reid (LAS) 1 18:35 Saint Louis (STL) 2
WN 621 1-stop Boeing 737-700 (73W) 4:35 Valid until 2025-06-02
Sun 14:00 Midway, Chicago (MDW) 19:05 Tampa (TPA)
WN 621 1-stop Boeing 737-700 (Scimitar Winglets) 4:05 Operates only on 2025-11-30
Mon,Thu,Fri 15:30 Sacramento (SMF) B 00:50 Tampa (TPA)
WN 621 1-stop Boeing 737 MAX 8 (7M8) 6:20 Effective 2025-10-02 through 2025-10-31
The flight arrives 1 day after departure.
Sun 16:45 John Glenn Columbus (CMH) 21:20 Austin (AUS)
WN 621 1-stop Boeing 737-700 (Scimitar Winglets) 5:35 Operates only on 2025-11-30
Mon,Thu,Fri,Sun 19:15 Tampa (TPA) 23:05 Los Angeles (LAX) 1
WN 621 1-stop Boeing 737-800 (73H) 6:50 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 19:15 Tampa (TPA) 23:05 Los Angeles (LAX) 1
WN 621 1-stop Boeing 737-800 (73H) 6:50 Effective 2025-11-21 through 2025-11-28
Fri,Sun 19:15 Tampa (TPA) 23:05 Los Angeles (LAX) 1
WN 621 1-stop Boeing 737-800 (73H) 6:50 Effective 2025-12-07 through 2025-12-14
Thu 19:15 Tampa (TPA) 23:05 Los Angeles (LAX) 1
WN 621 1-stop Boeing 737-800 (73H) 6:50 Operates only on 2025-12-18
Mon 19:15 Tampa (TPA) 23:05 Los Angeles (LAX) 1
WN 621 1-stop Boeing 737-800 (73H) 6:50 Operates only on 2026-01-05
Sun 19:40 Tampa (TPA) 23:05 Ontario, Los Angeles (ONT) 4
WN 621 1-stop Boeing 737-700 (Scimitar Winglets) 6:25 Operates only on 2025-11-30
Sun 08:25 Baltimore (BWI) 14:40 Burbank (BUR)
WN 621 2-stop Boeing 737-700 (Scimitar Winglets) 9:15 Effective 2025-10-05 through 2025-10-26
Mon,Thu,Fri 10:10 Burbank (BUR) 18:35 Saint Louis (STL) 2
WN 621 2-stop Boeing 737-700 (73W) 6:25 Valid until 2025-06-02
Sun 14:00 Midway, Chicago (MDW) 21:20 Austin (AUS)
WN 621 2-stop Boeing 737-700 (Scimitar Winglets) 7:20 Operates only on 2025-11-30
Sun 16:45 John Glenn Columbus (CMH) 23:05 Ontario, Los Angeles (ONT) 4
WN 621 2-stop Boeing 737-700 (Scimitar Winglets) 9:20 Operates only on 2025-11-30
Sun 14:00 Midway, Chicago (MDW) 23:05 Ontario, Los Angeles (ONT) 4
WN 621 3-stop Boeing 737-700 (Scimitar Winglets) 11:05 Operates only on 2025-11-30
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 621: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN621
05:40
Oklahoma City (OKC)

09:25
Orlando (MCO)
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
07:50
Nashville (BNA)

09:40
Kansas City (MCI)
Operates only on 2025-11-27
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
08:15
Midway, Chicago (MDW)

10:30
Portland (PDX)
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
08:25
Baltimore (BWI)

10:15
Grand Rapids (GRR)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
10:10
Burbank (BUR)

11:25
Las Vegas Harry Reid (LAS) 1
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
10:25
Phoenix Sky Harbor (PHX) 4

15:10
Des Moines (DSM)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
10:50
Grand Rapids (GRR)

11:25
Nashville (BNA)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
11:00
Baltimore (BWI)

12:45
Grand Rapids (GRR)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
11:20
Phoenix Sky Harbor (PHX) 4

16:00
Des Moines (DSM)
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
11:20
Phoenix Sky Harbor (PHX) 4

16:00
Des Moines (DSM)
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
11:20
Phoenix Sky Harbor (PHX) 4

16:00
Des Moines (DSM)
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
11:20
Portland (PDX)

13:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
11:25
Austin (AUS)

12:15
Las Vegas Harry Reid (LAS) 1
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
12:00
Las Vegas Harry Reid (LAS) 1

16:55
Des Moines (DSM)
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
12:10
Nashville (BNA)

14:40
Burbank (BUR)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
13:00
Santa Ana (SNA)

16:20
Denver (DEN)
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
14:00
Santa Ana (SNA)

17:20
Denver (DEN)
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
14:00
Santa Ana (SNA)

17:20
Denver (DEN)
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
14:00
Midway, Chicago (MDW)

16:10
John Glenn Columbus (CMH)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
15:30
Sacramento (SMF) B

17:25
Phoenix Sky Harbor (PHX) 4
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
16:45
Des Moines (DSM)

17:50
Saint Louis (STL) 2
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
16:45
John Glenn Columbus (CMH)

19:05
Tampa (TPA)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
16:50
Portland (PDX)

19:05
Las Vegas Harry Reid (LAS) 1
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
17:20
Tampa (TPA)

19:00
Austin (AUS)
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
17:20
Tampa (TPA)

19:00
Austin (AUS)
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
17:20
Tampa (TPA)

19:00
Austin (AUS)
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
17:20
Tampa (TPA)

19:00
Austin (AUS)
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
17:20
Tampa (TPA)

19:00
Austin (AUS)
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
17:30
Des Moines (DSM)

18:35
Saint Louis (STL) 2
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
17:45
Sacramento (SMF) B

19:40
Phoenix Sky Harbor (PHX) 4
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
18:05
Phoenix Sky Harbor (PHX) 4

00:50(+1)
Tampa (TPA)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Southwest Airlines WN621
19:15
Tampa (TPA)

21:00
Austin (AUS)
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

21:00
Austin (AUS)
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

21:00
Austin (AUS)
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

21:00
Austin (AUS)
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

21:00
Austin (AUS)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:40
Tampa (TPA)

21:20
Austin (AUS)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
21:10
Austin (AUS)

22:00
Las Vegas Harry Reid (LAS) 1
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
21:40
Austin (AUS)

22:30
Las Vegas Harry Reid (LAS) 1
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
21:40
Austin (AUS)

22:30
Las Vegas Harry Reid (LAS) 1
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
21:40
Austin (AUS)

23:05
Los Angeles (LAX) 1
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
21:40
Austin (AUS)

23:05
Los Angeles (LAX) 1
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
21:40
Austin (AUS)

23:05
Los Angeles (LAX) 1
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
21:40
Austin (AUS)

23:05
Los Angeles (LAX) 1
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
21:40
Austin (AUS)

23:05
Los Angeles (LAX) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
21:55
Austin (AUS)

23:05
Ontario, Los Angeles (ONT) 4
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
22:40
Austin (AUS)

00:05(+1)
Los Angeles (LAX) 1
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Southwest Airlines WN621
22:40
Austin (AUS)

00:05(+1)
Los Angeles (LAX) 1
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:25, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Southwest Airlines WN621
22:40
Austin (AUS)

00:05(+1)
Los Angeles (LAX) 1
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:25, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Southwest Airlines WN621
22:40
Austin (AUS)

00:05(+1)
Los Angeles (LAX) 1
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN621
08:15
Midway, Chicago (MDW)

13:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:20, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
08:25
Baltimore (BWI)

11:25
Nashville (BNA)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
10:10
Burbank (BUR)

16:55
Des Moines (DSM)
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:45, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
10:50
Grand Rapids (GRR)

14:40
Burbank (BUR)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:50, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
11:20
Phoenix Sky Harbor (PHX) 4

17:50
Saint Louis (STL) 2
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:30, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN621
12:00
Las Vegas Harry Reid (LAS) 1

18:35
Saint Louis (STL) 2
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:35, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
14:00
Midway, Chicago (MDW)

19:05
Tampa (TPA)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
15:30
Sacramento (SMF) B

00:50(+1)
Tampa (TPA)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 6:20, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Southwest Airlines WN621
16:45
John Glenn Columbus (CMH)

21:20
Austin (AUS)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
19:15
Tampa (TPA)

23:05
Los Angeles (LAX) 1
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 6:50, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

23:05
Los Angeles (LAX) 1
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:50, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

23:05
Los Angeles (LAX) 1
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:50, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

23:05
Los Angeles (LAX) 1
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 6:50, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:15
Tampa (TPA)

23:05
Los Angeles (LAX) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:50, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN621
19:40
Tampa (TPA)

23:05
Ontario, Los Angeles (ONT) 4
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
08:25
Baltimore (BWI)

14:40
Burbank (BUR)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:15, 2-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
10:10
Burbank (BUR)

18:35
Saint Louis (STL) 2
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 6:25, 2-stop
Boeing 737-700 (73W)
Southwest Airlines WN621
14:00
Midway, Chicago (MDW)

21:20
Austin (AUS)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 7:20, 2-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
16:45
John Glenn Columbus (CMH)

23:05
Ontario, Los Angeles (ONT) 4
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:20, 2-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN621
14:00
Midway, Chicago (MDW)

23:05
Ontario, Los Angeles (ONT) 4
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 11:05, 3-stop
Boeing 737-700 (Scimitar Winglets)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here
This flight number is listed as serving the following routes:
  • Austin (AUS) - Las Vegas Harry Reid (LAS)
  • Austin (AUS) - Los Angeles (LAX)
  • Austin (AUS) - Ontario, Los Angeles (ONT)
  • Baltimore (BWI) - Burbank (BUR)
  • Baltimore (BWI) - Grand Rapids (GRR)
  • Baltimore (BWI) - Nashville (BNA)
  • Burbank (BUR) - Des Moines (DSM)
  • Burbank (BUR) - Las Vegas Harry Reid (LAS)
  • Burbank (BUR) - Saint Louis (STL)
  • Des Moines (DSM) - Saint Louis (STL)
  • Grand Rapids (GRR) - Burbank (BUR)
  • Grand Rapids (GRR) - Nashville (BNA)
  • John Glenn Columbus (CMH) - Austin (AUS)
  • John Glenn Columbus (CMH) - Ontario, Los Angeles (ONT)
  • John Glenn Columbus (CMH) - Tampa (TPA)
  • Las Vegas Harry Reid (LAS) - Des Moines (DSM)
  • Las Vegas Harry Reid (LAS) - Saint Louis (STL)
  • Midway, Chicago (MDW) - Austin (AUS)
  • Midway, Chicago (MDW) - John Glenn Columbus (CMH)
  • Midway, Chicago (MDW) - Las Vegas Harry Reid (LAS)
  • Midway, Chicago (MDW) - Ontario, Los Angeles (ONT)
  • Midway, Chicago (MDW) - Portland (PDX)
  • Midway, Chicago (MDW) - Tampa (TPA)
  • Nashville (BNA) - Burbank (BUR)
  • Nashville (BNA) - Kansas City (MCI)
  • Oklahoma City (OKC) - Orlando (MCO)
  • Phoenix Sky Harbor (PHX) - Des Moines (DSM)
  • Phoenix Sky Harbor (PHX) - Saint Louis (STL)
  • Phoenix Sky Harbor (PHX) - Tampa (TPA)
  • Portland (PDX) - Las Vegas Harry Reid (LAS)
  • Sacramento (SMF) - Phoenix Sky Harbor (PHX)
  • Sacramento (SMF) - Tampa (TPA)
  • Santa Ana (SNA) - Denver (DEN)
  • Tampa (TPA) - Austin (AUS)
  • Tampa (TPA) - Los Angeles (LAX)
  • Tampa (TPA) - Ontario, Los Angeles (ONT)
All Southwest Airlines flights
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