Southwest Airlines flight WN 4378: Multiple routes

Ad box here 1220564027 I FlightWNum Top Box
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed 05:50 Denver (DEN) 09:20 Nashville (BNA)
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-08-05 through 2026-09-30
Sun 07:50 Sacramento (SMF) B 09:20 Santa Ana (SNA)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-12 through 2026-05-17
Sun 07:50 Sacramento (SMF) B 09:20 Santa Ana (SNA)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-05-31
Mon,Thu,Fri 08:40 Sacramento (SMF) B 10:10 Santa Ana (SNA)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-09 through 2026-06-01
Sun 08:55 Sacramento (SMF) B 10:25 Santa Ana (SNA)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-05-24
Sat 09:25 Chicago Midway (MDW) 12:20 Charlotte (CLT)
WN 4378 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-08-08 through 2026-09-26
Mon,Thu,Fri 10:45 Santa Ana (SNA) 12:05 Phoenix Sky Harbor (PHX) 4
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-04-09 through 2026-06-01
Tue,Wed 11:00 Santa Ana (SNA) 12:20 Phoenix Sky Harbor (PHX) 4
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-04-07 through 2026-06-03
Sat 11:10 Denver (DEN) 17:00 Boston Logan (BOS) B
WN 4378 Non-stop Boeing 737-800 (73H) 3:50 Effective 2026-02-14 through 2026-02-28
Sat 12:40 Sacramento (SMF) B 14:10 Santa Ana (SNA)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-11 through 2026-05-30
Mon,Thu,Fri 13:00 Denver (DEN) 18:45 Boston Logan (BOS) B
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 3:45 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 13:00 Denver (DEN) 18:45 Boston Logan (BOS) B
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 3:45 Effective 2026-02-20 through 2026-03-01
Sun 13:40 Dallas Love Field (DAL) 1 15:50 Chicago Midway (MDW)
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-08-09 through 2026-09-27
Sat 14:45 Santa Ana (SNA) 16:10 Phoenix Sky Harbor (PHX) 4
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-04-11 through 2026-05-30
Tue 15:30 Pittsburgh (PIT) 16:40 Baltimore (BWI)
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Effective 2026-08-04 through 2026-09-29
Sun 16:35 Wichita (ICT) 17:15 Las Vegas Harry Reid (LAS) 1
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 18:55 Chicago Midway (MDW) 21:50 Charlotte (CLT)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-08-06 through 2026-09-28
Sat 20:05 Wichita (ICT) 20:45 Las Vegas Harry Reid (LAS) 1
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-03-07 through 2026-04-04
Tue,Wed 20:05 Dallas Love Field (DAL) 1 21:40 Birmingham (BHM)
WN 4378 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-03-10 through 2026-04-01
Sat 21:20 Sacramento (SMF) B 22:55 Portland (PDX)
WN 4378 Non-stop Boeing 737-800 (73H) 1:35 Valid until 2026-01-03
Mon,Tue,Fri,Sun 21:45 Sacramento (SMF) B 23:20 Portland (PDX)
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Valid until 2026-01-04
Sun 22:30 Dallas Love Field (DAL) 1 23:15 Las Vegas Harry Reid (LAS) 1
WN 4378 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 22:45 Dallas Love Field (DAL) 1 23:30 Las Vegas Harry Reid (LAS) 1
WN 4378 Non-stop Boeing 737-800 (73H) 2:45 Effective 2026-06-04 through 2026-08-03
Non-Direct Flights:
Mon,Thu,Fri 08:40 Sacramento (SMF) B 12:05 Phoenix Sky Harbor (PHX) 4
WN 4378 1-stop Boeing 737-700 (Scimitar Winglets) 3:25 Effective 2026-04-09 through 2026-06-01
Sat 12:40 Sacramento (SMF) B 16:10 Phoenix Sky Harbor (PHX) 4
WN 4378 1-stop Boeing 737-700 (Scimitar Winglets) 3:30 Effective 2026-04-11 through 2026-05-30
Ad flat here 1377413384 I FlightWNum Lower
Parallax here
This flight number is listed as serving the following routes:


Feedback - Disclaimer - Privacy - new_base.html - DESKTOP - CACHE: False - LANG: en - IS_EU: False
FlightMapper.net Flight Search Countries Airlines
LANGUAGES
Southwest Airlines flight WN 4378: Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4378
05:50
Denver (DEN)

09:20
Nashville (BNA)
Effective 2026-08-05 through 2026-09-30
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
07:50
Sacramento (SMF) B

09:20
Santa Ana (SNA)
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 WN4378
07:50
Sacramento (SMF) B

09:20
Santa Ana (SNA)
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 WN4378
08:40
Sacramento (SMF) B

10:10
Santa Ana (SNA)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
08:55
Sacramento (SMF) B

10:25
Santa Ana (SNA)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
09:25
Chicago Midway (MDW)

12:20
Charlotte (CLT)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4378
10:45
Santa Ana (SNA)

12:05
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
11:00
Santa Ana (SNA)

12:20
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
11:10
Denver (DEN)

17:00
Boston Logan (BOS) B
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:50, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4378
12:40
Sacramento (SMF) B

14:10
Santa Ana (SNA)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
13:00
Denver (DEN)

18:45
Boston Logan (BOS) B
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
13:00
Denver (DEN)

18:45
Boston Logan (BOS) B
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
13:40
Dallas Love Field (DAL) 1

15:50
Chicago Midway (MDW)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
14:45
Santa Ana (SNA)

16:10
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
15:30
Pittsburgh (PIT)

16:40
Baltimore (BWI)
Effective 2026-08-04 through 2026-09-29
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
16:35
Wichita (ICT)

17:15
Las Vegas Harry Reid (LAS) 1
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
18:55
Chicago Midway (MDW)

21:50
Charlotte (CLT)
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
20:05
Wichita (ICT)

20:45
Las Vegas Harry Reid (LAS) 1
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
20:05
Dallas Love Field (DAL) 1

21:40
Birmingham (BHM)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4378
21:20
Sacramento (SMF) B

22:55
Portland (PDX)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4378
21:45
Sacramento (SMF) B

23:20
Portland (PDX)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
22:30
Dallas Love Field (DAL) 1

23:15
Las Vegas Harry Reid (LAS) 1
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4378
22:45
Dallas Love Field (DAL) 1

23:30
Las Vegas Harry Reid (LAS) 1
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN4378
08:40
Sacramento (SMF) B

12:05
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4378
12:40
Sacramento (SMF) B

16:10
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:30, 1-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:
  • Chicago Midway (MDW) - Charlotte (CLT)
  • Dallas Love Field (DAL) - Birmingham (BHM)
  • Dallas Love Field (DAL) - Chicago Midway (MDW)
  • Dallas Love Field (DAL) - Las Vegas Harry Reid (LAS)
  • Denver (DEN) - Boston Logan (BOS)
  • Denver (DEN) - Nashville (BNA)
  • Pittsburgh (PIT) - Baltimore (BWI)
  • Sacramento (SMF) - Phoenix Sky Harbor (PHX)
  • Sacramento (SMF) - Portland (PDX)
  • Sacramento (SMF) - Santa Ana (SNA)
  • Santa Ana (SNA) - Phoenix Sky Harbor (PHX)
  • Wichita (ICT) - Las Vegas Harry Reid (LAS)
All Southwest Airlines flights
Feedback     -     Disclaimer     -     Privacy - new_base.html - MOBILE

- CACHE: False - LANG: en - IS_EU: False