Southwest Airlines flight WN 4237: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sat 09:35 Pittsburgh (PIT) 12:05 Fort Myers (RSW) WN 4237 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-06-06 through 2026-08-01
Sun 10:15 Oakland (OAK) 2 11:45 San Diego (SAN) 1 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-12 through 2026-05-17
Sun 10:15 Oakland (OAK) 2 11:45 San Diego (SAN) 1 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-05-31
Mon,Thu,Fri 10:35 San Diego (SAN) 1 12:00 Las Vegas Harry Reid (LAS) 1 WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-04-09 through 2026-06-01
Tue,Wed 11:30 San Diego (SAN) 1 13:00 Las Vegas Harry Reid (LAS) 1 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-07 through 2026-06-03
Sat 11:30 San Diego (SAN) 1 13:00 Las Vegas Harry Reid (LAS) 1 WN 4237 Non-stop Boeing 737-800 (73H) 1:30 Effective 2026-04-11 through 2026-05-30
Tue,Wed 11:40 San Francisco (SFO) 2 13:45 Phoenix Sky Harbor (PHX) 4 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 2:05 Effective 2026-06-09 through 2026-07-29
Sun 12:20 San Diego (SAN) 1 13:45 Las Vegas Harry Reid (LAS) 1 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-04-12 through 2026-05-17
Sun 12:20 San Diego (SAN) 1 13:45 Las Vegas Harry Reid (LAS) 1 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2026-05-31
Sun 12:40 San Francisco (SFO) 2 14:40 Phoenix Sky Harbor (PHX) 4 WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-06-07 through 2026-08-02
Tue 13:20 Las Vegas Harry Reid (LAS) 1 14:35 San Diego (SAN) 1 WN 4237 Non-stop Boeing 737-800 (73H) 1:15 Effective 2026-08-04 through 2026-09-29
Mon,Thu,Fri 13:35 San Francisco (SFO) 2 15:40 Phoenix Sky Harbor (PHX) 4 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 2:05 Effective 2026-06-04 through 2026-08-03
Sun 14:25 Las Vegas Harry Reid (LAS) 1 16:55 Salt Lake City (SLC) WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-12 through 2026-05-17
Sun 14:25 Las Vegas Harry Reid (LAS) 1 16:55 Salt Lake City (SLC) WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-05-31
Sat 15:15 Chicago Midway (MDW) 17:40 Buffalo (BUF) WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-08-08 through 2026-09-26
Wed 17:40 Baltimore (BWI) 19:10 Myrtle Beach (MYR) WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-05 through 2026-09-30
Mon,Tue,Fri,Sun 19:00 San Diego (SAN) 1 20:40 Oakland (OAK) 2 WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Valid until 2026-01-04
Sat 19:25 San Diego (SAN) 1 21:05 Oakland (OAK) 2 WN 4237 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2026-01-03
Thu 19:40 San Diego (SAN) 1 21:20 Oakland (OAK) 2 WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Valid until 2026-01-01
Mon 19:40 San Diego (SAN) 1 21:20 Oakland (OAK) 2 WN 4237 Non-stop Boeing 737-800 (73H) 1:40 Operates only on 2026-01-05
Sun 20:50 Nashville (BNA) 22:20 New Orleans (MSY) WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-09 through 2026-09-27
Sun 22:05 Salt Lake City (SLC) 23:00 Oakland (OAK) 2 WN 4237 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-03-08 through 2026-04-05
Non-Direct Flights:
Sun 10:15 Oakland (OAK) 2 13:45 Las Vegas Harry Reid (LAS) 1 WN 4237 1-stop Boeing 737-700 (Scimitar Winglets) 3:30 Effective 2026-04-12 through 2026-05-17
Sun 10:15 Oakland (OAK) 2 13:45 Las Vegas Harry Reid (LAS) 1 WN 4237 1-stop Boeing 737-700 (Scimitar Winglets) 3:30 Operates only on 2026-05-31
Sun 12:20 San Diego (SAN) 1 16:55 Salt Lake City (SLC) WN 4237 1-stop Boeing 737-700 (Scimitar Winglets) 3:35 Effective 2026-04-12 through 2026-05-17
Sun 12:20 San Diego (SAN) 1 16:55 Salt Lake City (SLC) WN 4237 1-stop Boeing 737-700 (Scimitar Winglets) 3:35 Operates only on 2026-05-31
Sun 10:15 Oakland (OAK) 2 16:55 Salt Lake City (SLC) WN 4237 2-stop Boeing 737-700 (Scimitar Winglets) 5:40 Effective 2026-04-12 through 2026-05-17
Sun 10:15 Oakland (OAK) 2 16:55 Salt Lake City (SLC) WN 4237 2-stop Boeing 737-700 (Scimitar Winglets) 5:40 Operates only on 2026-05-31

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This flight number is listed as serving the following routes:

Baltimore (BWI) - Myrtle Beach (MYR)
Chicago Midway (MDW) - Buffalo (BUF)
Las Vegas Harry Reid (LAS) - Salt Lake City (SLC)
Nashville (BNA) - New Orleans (MSY)
Oakland (OAK) - Las Vegas Harry Reid (LAS)
Oakland (OAK) - San Diego (SAN)
Pittsburgh (PIT) - Fort Myers (RSW)
Salt Lake City (SLC) - Oakland (OAK)
San Diego (SAN) - Las Vegas Harry Reid (LAS)
San Diego (SAN) - Salt Lake City (SLC)
San Francisco (SFO) - Phoenix Sky Harbor (PHX)

All Southwest Airlines flights

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Southwest Airlines flight WN 4237: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4237

09:35

Pittsburgh (PIT)

12:05

Fort Myers (RSW)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4237

10:15

Oakland (OAK) 2

11:45

San Diego (SAN) 1

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

10:15

Oakland (OAK) 2

11:45

San Diego (SAN) 1

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

10:35

San Diego (SAN) 1

12:00

Las Vegas Harry Reid (LAS) 1

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN4237

11:30

San Diego (SAN) 1

13:00

Las Vegas Harry Reid (LAS) 1

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

11:30

San Diego (SAN) 1

13:00

Las Vegas Harry Reid (LAS) 1

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4237

11:40

San Francisco (SFO) 2

13:45

Phoenix Sky Harbor (PHX) 4

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

12:20

San Diego (SAN) 1

13:45

Las Vegas Harry Reid (LAS) 1

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN4237

12:20

San Diego (SAN) 1

13:45

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN4237

12:40

San Francisco (SFO) 2

14:40

Phoenix Sky Harbor (PHX) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4237

13:20

Las Vegas Harry Reid (LAS) 1

14:35

San Diego (SAN) 1

Effective 2026-08-04 through 2026-09-29

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4237

13:35

San Francisco (SFO) 2

15:40

Phoenix Sky Harbor (PHX) 4

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

14:25

Las Vegas Harry Reid (LAS) 1

16:55

Salt Lake City (SLC)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

14:25

Las Vegas Harry Reid (LAS) 1

16:55

Salt Lake City (SLC)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4237

15:15

Chicago Midway (MDW)

17:40

Buffalo (BUF)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN4237

17:40

Baltimore (BWI)

19:10

Myrtle Beach (MYR)

Effective 2026-08-05 through 2026-09-30

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4237

19:00

San Diego (SAN) 1

20:40

Oakland (OAK) 2

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4237

19:25

San Diego (SAN) 1

21:05

Oakland (OAK) 2

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN4237

19:40

San Diego (SAN) 1

21:20

Oakland (OAK) 2

Valid until 2026-01-01

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4237

19:40

San Diego (SAN) 1

21:20

Oakland (OAK) 2

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN4237

20:50

Nashville (BNA)

22:20

New Orleans (MSY)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4237

22:05

Salt Lake City (SLC)

23:00

Oakland (OAK) 2

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4237

10:15

Oakland (OAK) 2

13:45

Las Vegas Harry Reid (LAS) 1

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:30, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4237

10:15

Oakland (OAK) 2

13:45

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:30, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4237

12:20

San Diego (SAN) 1

16:55

Salt Lake City (SLC)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:35, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4237

12:20

San Diego (SAN) 1

16:55

Salt Lake City (SLC)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:35, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4237

10:15

Oakland (OAK) 2

16:55

Salt Lake City (SLC)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4237

10:15

Oakland (OAK) 2

16:55

Salt Lake City (SLC)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:40, 2-stop
Boeing 737-700 (Scimitar Winglets)

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Parallax here

This flight number is listed as serving the following routes:

Baltimore (BWI) - Myrtle Beach (MYR)
Chicago Midway (MDW) - Buffalo (BUF)
Las Vegas Harry Reid (LAS) - Salt Lake City (SLC)
Nashville (BNA) - New Orleans (MSY)
Oakland (OAK) - Las Vegas Harry Reid (LAS)
Oakland (OAK) - San Diego (SAN)
Pittsburgh (PIT) - Fort Myers (RSW)
Salt Lake City (SLC) - Oakland (OAK)
San Diego (SAN) - Las Vegas Harry Reid (LAS)
San Diego (SAN) - Salt Lake City (SLC)
San Francisco (SFO) - Phoenix Sky Harbor (PHX)

All Southwest Airlines flights

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