Southwest Airlines flight WN 4437: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sun 07:05 Nashville (BNA) 09:30 Austin (AUS) WN 4437 Non-stop Boeing 737-800 (73H) 2:25 Operates only on 2026-05-24
Mon,Thu-Sun 07:40 Nashville (BNA) 10:05 Austin (AUS) WN 4437 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-04-09 through 2026-05-23
Mon,Thu-Sun 07:40 Nashville (BNA) 10:05 Austin (AUS) WN 4437 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-05-25 through 2026-06-01
Tue,Wed 08:05 Nashville (BNA) 10:30 Austin (AUS) WN 4437 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-04-07 through 2026-06-03
Thu,Fri,Sun 09:50 Nashville (BNA) 12:30 Detroit (DTW) E WN 4437 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-01-11 through 2026-01-16
Mon,Sun 09:50 Nashville (BNA) 12:30 Detroit (DTW) E WN 4437 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 09:50 Nashville (BNA) 12:30 Detroit (DTW) E WN 4437 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-02-01 through 2026-02-06
Mon,Sun 09:50 Nashville (BNA) 12:30 Detroit (DTW) E WN 4437 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 09:50 Nashville (BNA) 12:30 Detroit (DTW) E WN 4437 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-02-17 through 2026-02-23
Mon 09:50 Nashville (BNA) 12:30 Detroit (DTW) E WN 4437 Non-stop Boeing 737-800 (73H) 1:40 Operates only on 2026-03-02
Sat 10:10 Nashville (BNA) 12:50 Detroit (DTW) E WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-01-10 through 2026-02-07
Sat 10:45 Austin (AUS) 11:40 Las Vegas Harry Reid (LAS) 1 WN 4437 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-04-11 through 2026-05-30
Tue,Wed 14:10 San Diego (SAN) 1 15:35 Las Vegas Harry Reid (LAS) 1 WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-08-04 through 2026-09-30
Sun 14:25 San Diego (SAN) 1 15:50 Las Vegas Harry Reid (LAS) 1 WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-08-09 through 2026-09-27
Sat 14:35 San Diego (SAN) 1 16:00 Las Vegas Harry Reid (LAS) 1 WN 4437 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-08-08 through 2026-09-26
Mon-Fri 18:20 Nashville (BNA) 21:00 Detroit (DTW) E WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 18:20 Nashville (BNA) 21:00 Detroit (DTW) E WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-01-18 through 2026-01-23
Mon-Fri 18:20 Nashville (BNA) 21:00 Detroit (DTW) E WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 18:20 Nashville (BNA) 21:00 Detroit (DTW) E WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-02-08 through 2026-02-11
Tue,Wed 18:20 Nashville (BNA) 21:00 Detroit (DTW) E WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-02-18 through 2026-03-04
Mon,Thu,Fri 18:45 San Diego (SAN) 1 20:05 Las Vegas Harry Reid (LAS) 1 WN 4437 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2026-08-06 through 2026-09-28
Tue,Wed,Sat 19:00 San Jose (SJC) B 20:10 Burbank (BUR) WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-03-07 through 2026-04-04
Sat 19:40 Baltimore (BWI) 21:15 Greenville/Spartanburg (GSP) WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 20:00 Baltimore (BWI) 21:35 Greenville/Spartanburg (GSP) WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-06-04 through 2026-08-03
Sun 20:05 Baltimore (BWI) 21:40 Greenville/Spartanburg (GSP) WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 20:30 San Jose (SJC) B 21:35 Burbank (BUR) WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-03-05 through 2026-04-06
Sun 20:45 San Jose (SJC) B 21:50 Burbank (BUR) WN 4437 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-03-08 through 2026-04-05
Sat 21:55 Tampa (TPA) 00:35 Hartford (BDL) WN 4437 Non-stop Boeing 737-800 (73H) 2:40 Valid until 2026-01-03 The flight arrives 1 day after departure.
Non-Direct Flights:
Sat 07:40 Nashville (BNA) 11:40 Las Vegas Harry Reid (LAS) 1 WN 4437 1-stop Boeing 737 MAX 8 (7M8) 6:00 Effective 2026-04-11 through 2026-05-30

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This flight number is listed as serving the following routes:

Austin (AUS) - Las Vegas Harry Reid (LAS)
Baltimore (BWI) - Greenville/Spartanburg (GSP)
Nashville (BNA) - Austin (AUS)
Nashville (BNA) - Detroit (DTW)
Nashville (BNA) - Las Vegas Harry Reid (LAS)
San Diego (SAN) - Las Vegas Harry Reid (LAS)
San Jose (SJC) - Burbank (BUR)
Tampa (TPA) - Hartford (BDL)

All Southwest Airlines flights

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Southwest Airlines flight WN 4437: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4437

07:05

Nashville (BNA)

09:30

Austin (AUS)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

07:40

Nashville (BNA)

10:05

Austin (AUS)

Effective 2026-04-09 through 2026-05-23

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4437

07:40

Nashville (BNA)

10:05

Austin (AUS)

Effective 2026-05-25 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4437

08:05

Nashville (BNA)

10:30

Austin (AUS)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4437

09:50

Nashville (BNA)

12:30

Detroit (DTW) E

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

09:50

Nashville (BNA)

12:30

Detroit (DTW) E

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

09:50

Nashville (BNA)

12:30

Detroit (DTW) E

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

09:50

Nashville (BNA)

12:30

Detroit (DTW) E

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

09:50

Nashville (BNA)

12:30

Detroit (DTW) E

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

09:50

Nashville (BNA)

12:30

Detroit (DTW) E

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4437

10:10

Nashville (BNA)

12:50

Detroit (DTW) E

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

10:45

Austin (AUS)

11:40

Las Vegas Harry Reid (LAS) 1

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4437

14:10

San Diego (SAN) 1

15:35

Las Vegas Harry Reid (LAS) 1

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

14:25

San Diego (SAN) 1

15:50

Las Vegas Harry Reid (LAS) 1

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

14:35

San Diego (SAN) 1

16:00

Las Vegas Harry Reid (LAS) 1

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4437

18:20

Nashville (BNA)

21:00

Detroit (DTW) E

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

18:20

Nashville (BNA)

21:00

Detroit (DTW) E

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

18:20

Nashville (BNA)

21:00

Detroit (DTW) E

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

18:20

Nashville (BNA)

21:00

Detroit (DTW) E

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

18:20

Nashville (BNA)

21:00

Detroit (DTW) E

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

18:45

San Diego (SAN) 1

20:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4437

19:00

San Jose (SJC) B

20:10

Burbank (BUR)

Effective 2026-03-07 through 2026-04-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

19:40

Baltimore (BWI)

21:15

Greenville/Spartanburg (GSP)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

20:00

Baltimore (BWI)

21:35

Greenville/Spartanburg (GSP)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

20:05

Baltimore (BWI)

21:40

Greenville/Spartanburg (GSP)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

20:30

San Jose (SJC) B

21:35

Burbank (BUR)

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

20:45

San Jose (SJC) B

21:50

Burbank (BUR)

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4437

21:55

Tampa (TPA)

00:35(+1)

Hartford (BDL)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:40, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN4437

07:40

Nashville (BNA)

11:40

Las Vegas Harry Reid (LAS) 1

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 6:00, 1-stop
Boeing 737 MAX 8 (7M8)

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Parallax here

This flight number is listed as serving the following routes:

Austin (AUS) - Las Vegas Harry Reid (LAS)
Baltimore (BWI) - Greenville/Spartanburg (GSP)
Nashville (BNA) - Austin (AUS)
Nashville (BNA) - Detroit (DTW)
Nashville (BNA) - Las Vegas Harry Reid (LAS)
San Diego (SAN) - Las Vegas Harry Reid (LAS)
San Jose (SJC) - Burbank (BUR)
Tampa (TPA) - Hartford (BDL)

All Southwest Airlines flights

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