Southwest Airlines flight WN 4438: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 13:05 Saint Louis (STL) 2 14:15 Chicago Midway (MDW)
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Operates only on 2026-01-03
Sat 13:45 Saint Louis (STL) 2 17:20 Boston Logan (BOS) B
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-04-11 through 2026-05-30
Mon,Tue,Fri,Sun 14:15 Saint Louis (STL) 2 15:20 Chicago Midway (MDW)
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 1:05 Valid until 2026-01-04
Mon 14:30 Saint Louis (STL) 2 15:40 Chicago Midway (MDW)
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Operates only on 2026-01-05
Mon,Thu,Fri 14:30 Saint Louis (STL) 2 18:05 Boston Logan (BOS) B
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-04-09 through 2026-06-01
Sun 14:50 Saint Louis (STL) 2 18:25 Boston Logan (BOS) B
WN 4438 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-04-12 through 2026-05-17
Sun 14:50 Saint Louis (STL) 2 18:25 Boston Logan (BOS) B
WN 4438 Non-stop Boeing 737-800 (73H) 2:35 Operates only on 2026-05-31
Sun 16:15 Phoenix Sky Harbor (PHX) 4 22:35 Louisville (SDF)
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 3:20 Operates only on 2026-05-24
Sun 18:00 Nashville (BNA) 20:40 San Jose (SJC) B
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 4:40 Effective 2026-08-09 through 2026-09-27
Tue,Wed 18:45 Baltimore (BWI) 20:50 Jacksonville (JAX)
WN 4438 Non-stop Boeing 737-800 (73H) 2:05 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 20:50 Baltimore (BWI) 22:55 Jacksonville (JAX)
WN 4438 Non-stop Boeing 737-800 (73H) 2:05 Effective 2026-06-04 through 2026-08-03
Thu,Fri 21:50 San Jose (SJC) B 05:45 Baltimore (BWI)
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 4:55 Effective 2026-03-05 through 2026-03-06
The flight arrives 1 day after departure.
Daily 21:50 San Jose (SJC) B 05:45 Baltimore (BWI)
WN 4438 Non-stop Boeing 737 MAX 8 (7M8) 4:55 Effective 2026-03-08 through 2026-04-06
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4438: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4438
13:05
Saint Louis (STL) 2

14:15
Chicago Midway (MDW)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
13:45
Saint Louis (STL) 2

17:20
Boston Logan (BOS) B
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
14:15
Saint Louis (STL) 2

15:20
Chicago Midway (MDW)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
14:30
Saint Louis (STL) 2

15:40
Chicago Midway (MDW)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
14:30
Saint Louis (STL) 2

18:05
Boston Logan (BOS) B
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
14:50
Saint Louis (STL) 2

18:25
Boston Logan (BOS) B
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4438
14:50
Saint Louis (STL) 2

18:25
Boston Logan (BOS) B
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4438
16:15
Phoenix Sky Harbor (PHX) 4

22:35
Louisville (SDF)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:20, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
18:00
Nashville (BNA)

20:40
San Jose (SJC) B
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4438
18:45
Baltimore (BWI)

20:50
Jacksonville (JAX)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4438
20:50
Baltimore (BWI)

22:55
Jacksonville (JAX)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4438
21:50
San Jose (SJC) B

05:45(+1)
Baltimore (BWI)
Effective 2026-03-05 through 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:55, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN4438
21:50
San Jose (SJC) B

05:45(+1)
Baltimore (BWI)
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:55, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Jacksonville (JAX)
  • Nashville (BNA) - San Jose (SJC)
  • Phoenix Sky Harbor (PHX) - Louisville (SDF)
  • Saint Louis (STL) - Boston Logan (BOS)
  • Saint Louis (STL) - Chicago Midway (MDW)
  • San Jose (SJC) - Baltimore (BWI)
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