Southwest Airlines flight WN 378: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 08:15 Saint Louis (STL) 2 10:50 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2025-11-04 through 2025-11-12
Mon-Thu 08:15 Saint Louis (STL) 2 10:50 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2025-11-17 through 2025-11-20
Mon-Fri 08:15 Saint Louis (STL) 2 10:50 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2025-12-02 through 2025-12-11
Mon-Wed 08:15 Saint Louis (STL) 2 10:50 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2025-12-15 through 2025-12-17
Wed,Thu 08:15 Saint Louis (STL) 2 10:50 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2025-12-24 through 2026-01-01
Thu 08:20 Baltimore (BWI) 13:25 Luis Munoz Marin, San Juan (SJU) B
WN 378 Non-stop Boeing 737-800 (73H) 4:05 Operates only on 2025-11-27
Mon,Thu,Fri 11:25 Portland (PDX) 12:55 Sacramento (SMF) B
WN 378 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 11:25 Portland (PDX) 12:55 Sacramento (SMF) B
WN 378 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-07-07 through 2025-08-04
Fri 12:30 Portland (PDX) 14:00 Sacramento (SMF) B
WN 378 Non-stop Boeing 737-700 (73W) 1:30 Operates only on 2025-07-04
Sun 13:30 Burbank (BUR) 14:55 Sacramento (SMF) B
WN 378 Non-stop Boeing 737-700 (73W) 1:25 Operates only on 2025-08-31
Sun 14:35 Nashville (BNA) 17:40 Philadelphia (PHL) E
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 2:05 Effective 2025-08-10 through 2025-08-24
Sun 14:35 Nashville (BNA) 17:40 Philadelphia (PHL) E
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 2:05 Effective 2025-09-07 through 2025-09-28
Sun 15:15 Los Angeles (LAX) 1 16:45 Sacramento (SMF) B
WN 378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2025-10-05 through 2025-10-26
Sun 15:30 Sacramento (SMF) B 18:50 Denver (DEN)
WN 378 Non-stop Boeing 737-700 (73W) 2:20 Operates only on 2025-08-31
Sat 15:35 Luis Munoz Marin, San Juan (SJU) B 19:05 Austin (AUS)
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 5:30 Effective 2025-11-22 through 2025-11-29
Sat 15:35 Luis Munoz Marin, San Juan (SJU) B 19:05 Austin (AUS)
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 5:30 Effective 2025-12-20 through 2026-01-03
Sat 16:15 Los Angeles (LAX) 1 17:40 Sacramento (SMF) B
WN 378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2025-10-04 through 2025-11-01
Mon-Wed 16:35 Ronald Reagan Washington (DCA) 18:25 Omaha (OMA)
WN 378 Non-stop Boeing 737-700 (Scimitar Winglets) 2:50 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 16:35 Ronald Reagan Washington (DCA) 18:25 Omaha (OMA)
WN 378 Non-stop Boeing 737-700 (Scimitar Winglets) 2:50 Effective 2025-12-19 through 2026-01-04
Sat 17:20 Nashville (BNA) 20:25 Philadelphia (PHL) E
WN 378 Non-stop Boeing 737-800 (73H) 2:05 Effective 2025-08-09 through 2025-09-27
Tue,Wed 18:15 Portland (PDX) 19:40 Sacramento (SMF) B
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2025-06-10 through 2025-07-30
Mon,Thu,Fri,Sun 18:45 Saint Louis (STL) 2 21:15 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 18:45 Saint Louis (STL) 2 21:15 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2025-11-21 through 2025-11-28
Fri,Sun 18:45 Saint Louis (STL) 2 21:15 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2025-12-07 through 2025-12-14
Thu 18:45 Saint Louis (STL) 2 21:15 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Operates only on 2025-12-18
Mon 18:45 Saint Louis (STL) 2 21:15 Atlanta (ATL) N
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Operates only on 2026-01-05
Sun 18:50 Baltimore (BWI) 20:55 Albuquerque (ABQ)
WN 378 Non-stop Boeing 737-800 (73H) 4:05 Effective 2025-06-08 through 2025-08-03
Mon,Thu,Fri 19:05 Nashville (BNA) 22:10 Philadelphia (PHL) E
WN 378 Non-stop Boeing 737-700 (73W) 2:05 Effective 2025-08-07 through 2025-09-29
Sun 19:15 Saint Louis (STL) 2 21:45 Atlanta (ATL) N
WN 378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2025-11-30
Sat 19:45 Baltimore (BWI) 21:50 Albuquerque (ABQ)
WN 378 Non-stop Boeing 737-700 (73W) 4:05 Effective 2025-06-07 through 2025-08-02
Mon-Sat 21:55 Las Vegas Harry Reid (LAS) 1 05:30 Baltimore (BWI)
WN 378 Non-stop Boeing 737 MAX 8 (7M8) 4:35 Valid until 2025-06-04
The flight arrives 1 day after departure.
Non-Direct Flights:
Sun 13:30 Burbank (BUR) 18:50 Denver (DEN)
WN 378 1-stop Boeing 737-700 (73W) 4:20 Operates only on 2025-08-31
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 378: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN378
08:15
Saint Louis (STL) 2

10:50
Atlanta (ATL) N
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
08:15
Saint Louis (STL) 2

10:50
Atlanta (ATL) N
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
08:15
Saint Louis (STL) 2

10:50
Atlanta (ATL) N
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
08:15
Saint Louis (STL) 2

10:50
Atlanta (ATL) N
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
08:15
Saint Louis (STL) 2

10:50
Atlanta (ATL) N
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
08:20
Baltimore (BWI)

13:25
Luis Munoz Marin, San Juan (SJU) B
Operates only on 2025-11-27
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:05, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN378
11:25
Portland (PDX)

12:55
Sacramento (SMF) B
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN378
11:25
Portland (PDX)

12:55
Sacramento (SMF) B
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN378
12:30
Portland (PDX)

14:00
Sacramento (SMF) B
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN378
13:30
Burbank (BUR)

14:55
Sacramento (SMF) B
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN378
14:35
Nashville (BNA)

17:40
Philadelphia (PHL) E
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
14:35
Nashville (BNA)

17:40
Philadelphia (PHL) E
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
15:15
Los Angeles (LAX) 1

16:45
Sacramento (SMF) B
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN378
15:30
Sacramento (SMF) B

18:50
Denver (DEN)
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN378
15:35
Luis Munoz Marin, San Juan (SJU) B

19:05
Austin (AUS)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
15:35
Luis Munoz Marin, San Juan (SJU) B

19:05
Austin (AUS)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
16:15
Los Angeles (LAX) 1

17:40
Sacramento (SMF) B
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN378
16:35
Ronald Reagan Washington (DCA)

18:25
Omaha (OMA)
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN378
16:35
Ronald Reagan Washington (DCA)

18:25
Omaha (OMA)
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN378
17:20
Nashville (BNA)

20:25
Philadelphia (PHL) E
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:05, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN378
18:15
Portland (PDX)

19:40
Sacramento (SMF) B
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
18:45
Saint Louis (STL) 2

21:15
Atlanta (ATL) N
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
18:45
Saint Louis (STL) 2

21:15
Atlanta (ATL) N
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
18:45
Saint Louis (STL) 2

21:15
Atlanta (ATL) N
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
18:45
Saint Louis (STL) 2

21:15
Atlanta (ATL) N
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
18:45
Saint Louis (STL) 2

21:15
Atlanta (ATL) N
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN378
18:50
Baltimore (BWI)

20:55
Albuquerque (ABQ)
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:05, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN378
19:05
Nashville (BNA)

22:10
Philadelphia (PHL) E
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN378
19:15
Saint Louis (STL) 2

21:45
Atlanta (ATL) N
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN378
19:45
Baltimore (BWI)

21:50
Albuquerque (ABQ)
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:05, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN378
21:55
Las Vegas Harry Reid (LAS) 1

05:30(+1)
Baltimore (BWI)
Valid until 2025-06-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN378
13:30
Burbank (BUR)

18:50
Denver (DEN)
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:20, 1-stop
Boeing 737-700 (73W)
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This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Albuquerque (ABQ)
  • Baltimore (BWI) - Luis Munoz Marin, San Juan (SJU)
  • Burbank (BUR) - Denver (DEN)
  • Burbank (BUR) - Sacramento (SMF)
  • Las Vegas Harry Reid (LAS) - Baltimore (BWI)
  • Los Angeles (LAX) - Sacramento (SMF)
  • Luis Munoz Marin, San Juan (SJU) - Austin (AUS)
  • Nashville (BNA) - Philadelphia (PHL)
  • Portland (PDX) - Sacramento (SMF)
  • Ronald Reagan Washington (DCA) - Omaha (OMA)
  • Sacramento (SMF) - Denver (DEN)
  • Saint Louis (STL) - Atlanta (ATL)
All Southwest Airlines flights
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