Southwest Airlines flight WN 400: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue 07:40 Boise (BOI) 08:10 Sacramento (SMF) B
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-04 through 2026-09-29
Sat 09:45 Portland (PDX) 15:30 Saint Louis (STL) 2
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:45 Effective 2026-08-08 through 2026-09-26
Wed,Thu 10:30 Tampa (TPA) 12:00 Atlanta (ATL) N
WN 400 Non-stop Boeing 737-700 (73W) 1:30 Valid until 2026-01-01
Sat 11:20 Austin (AUS) 15:20 Baltimore (BWI)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-07 through 2026-04-04
Tue,Wed 11:25 Austin (AUS) 15:30 Baltimore (BWI)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-03-10 through 2026-04-01
Sat 11:45 Las Vegas Harry Reid (LAS) 1 16:55 Saint Louis (STL) 2
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-01-10 through 2026-02-07
Mon,Thu,Fri 11:45 Austin (AUS) 15:45 Baltimore (BWI)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-05 through 2026-04-06
Sat 12:05 Austin (AUS) 14:35 Chicago Midway (MDW)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-04-11 through 2026-05-30
Tue,Wed 14:00 Austin (AUS) 16:35 Chicago Midway (MDW)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-04-07 through 2026-06-03
Sun 14:35 Austin (AUS) 17:10 Chicago Midway (MDW)
WN 400 Non-stop Boeing 737-800 (73H) 2:35 Operates only on 2026-05-24
Mon,Thu,Fri 15:10 Austin (AUS) 17:45 Chicago Midway (MDW)
WN 400 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Effective 2026-04-09 through 2026-06-01
Sun 15:20 Austin (AUS) 17:55 Chicago Midway (MDW)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-04-12 through 2026-05-17
Sun 15:20 Austin (AUS) 17:55 Chicago Midway (MDW)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Operates only on 2026-05-31
Sun 15:30 Austin (AUS) 19:35 Baltimore (BWI)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 15:35 Tampa (TPA) 17:10 Las Vegas Harry Reid (LAS) 1
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 4:35 Effective 2026-08-06 through 2026-09-28
Mon 17:20 Tampa (TPA) 18:55 Atlanta (ATL) N
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Operates only on 2026-01-05
Sun 17:35 Miami (MIA) 20:15 Baltimore (BWI)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-08-09 through 2026-09-27
Thu,Fri,Sun 18:00 Houston Hobby (HOU) 20:00 Phoenix Sky Harbor (PHX) 4
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 18:00 Houston Hobby (HOU) 20:00 Phoenix Sky Harbor (PHX) 4
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 18:00 Houston Hobby (HOU) 20:00 Phoenix Sky Harbor (PHX) 4
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 18:00 Houston Hobby (HOU) 20:00 Phoenix Sky Harbor (PHX) 4
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 18:00 Houston Hobby (HOU) 20:00 Phoenix Sky Harbor (PHX) 4
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-02-17 through 2026-02-23
Mon 18:00 Houston Hobby (HOU) 20:00 Phoenix Sky Harbor (PHX) 4
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Operates only on 2026-03-02
Mon-Fri 18:05 Orlando (MCO) 19:15 Nashville (BNA)
WN 400 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 18:05 Orlando (MCO) 19:15 Nashville (BNA)
WN 400 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-01-18 through 2026-01-23
Mon-Fri 18:05 Orlando (MCO) 19:15 Nashville (BNA)
WN 400 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 18:05 Orlando (MCO) 19:15 Nashville (BNA)
WN 400 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-02-08 through 2026-02-11
Tue,Wed 18:05 Orlando (MCO) 19:15 Nashville (BNA)
WN 400 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-02-18 through 2026-03-04
Mon,Tue,Fri-Sun 18:10 Tampa (TPA) 19:45 Atlanta (ATL) N
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Valid until 2026-01-04
Wed 18:35 Santa Ana (SNA) 19:50 San Jose (SJC) B
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-08-05 through 2026-09-30
Mon,Thu,Fri 19:20 Orlando (MCO) 20:30 Nashville (BNA)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 19:20 Orlando (MCO) 20:30 Nashville (BNA)
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-02-20 through 2026-03-01
Sat 19:40 Orlando (MCO) 20:50 Nashville (BNA)
WN 400 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-02-14 through 2026-02-28
Tue,Wed 20:55 Austin (AUS) 22:25 San Jose (SJC) B
WN 400 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-06-09 through 2026-07-29
Sun 21:25 Austin (AUS) 22:55 San Jose (SJC) B
WN 400 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 21:55 Austin (AUS) 23:25 San Jose (SJC) B
WN 400 Non-stop Boeing 737 MAX 8 (7M8) 3:30 Effective 2026-06-04 through 2026-08-03
This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 400: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN400
07:40
Boise (BOI)

08:10
Sacramento (SMF) B
Effective 2026-08-04 through 2026-09-29
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
09:45
Portland (PDX)

15:30
Saint Louis (STL) 2
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
10:30
Tampa (TPA)

12:00
Atlanta (ATL) N
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN400
11:20
Austin (AUS)

15:20
Baltimore (BWI)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
11:25
Austin (AUS)

15:30
Baltimore (BWI)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
11:45
Las Vegas Harry Reid (LAS) 1

16:55
Saint Louis (STL) 2
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
11:45
Austin (AUS)

15:45
Baltimore (BWI)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
12:05
Austin (AUS)

14:35
Chicago Midway (MDW)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
14:00
Austin (AUS)

16:35
Chicago Midway (MDW)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
14:35
Austin (AUS)

17:10
Chicago Midway (MDW)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
15:10
Austin (AUS)

17:45
Chicago Midway (MDW)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN400
15:20
Austin (AUS)

17:55
Chicago Midway (MDW)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
15:20
Austin (AUS)

17:55
Chicago Midway (MDW)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
15:30
Austin (AUS)

19:35
Baltimore (BWI)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
15:35
Tampa (TPA)

17:10
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
17:20
Tampa (TPA)

18:55
Atlanta (ATL) N
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
17:35
Miami (MIA)

20:15
Baltimore (BWI)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:00
Houston Hobby (HOU)

20:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:00
Houston Hobby (HOU)

20:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:00
Houston Hobby (HOU)

20:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:00
Houston Hobby (HOU)

20:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:00
Houston Hobby (HOU)

20:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:00
Houston Hobby (HOU)

20:00
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
18:05
Orlando (MCO)

19:15
Nashville (BNA)
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
18:05
Orlando (MCO)

19:15
Nashville (BNA)
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
18:05
Orlando (MCO)

19:15
Nashville (BNA)
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
18:05
Orlando (MCO)

19:15
Nashville (BNA)
Effective 2026-02-08 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
18:05
Orlando (MCO)

19:15
Nashville (BNA)
Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
18:10
Tampa (TPA)

19:45
Atlanta (ATL) N
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 WN400
18:35
Santa Ana (SNA)

19:50
San Jose (SJC) B
Effective 2026-08-05 through 2026-09-30
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
19:20
Orlando (MCO)

20:30
Nashville (BNA)
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
19:20
Orlando (MCO)

20:30
Nashville (BNA)
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN400
19:40
Orlando (MCO)

20:50
Nashville (BNA)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
20:55
Austin (AUS)

22:25
San Jose (SJC) B
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
21:25
Austin (AUS)

22:55
San Jose (SJC) B
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN400
21:55
Austin (AUS)

23:25
San Jose (SJC) B
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
This flight number is listed as serving the following routes:
  • Austin (AUS) - Baltimore (BWI)
  • Austin (AUS) - Chicago Midway (MDW)
  • Austin (AUS) - San Jose (SJC)
  • Boise (BOI) - Sacramento (SMF)
  • Houston Hobby (HOU) - Phoenix Sky Harbor (PHX)
  • Las Vegas Harry Reid (LAS) - Saint Louis (STL)
  • Miami (MIA) - Baltimore (BWI)
  • Orlando (MCO) - Nashville (BNA)
  • Portland (PDX) - Saint Louis (STL)
  • Santa Ana (SNA) - San Jose (SJC)
  • Tampa (TPA) - Atlanta (ATL)
  • Tampa (TPA) - Las Vegas Harry Reid (LAS)
All Southwest Airlines flights
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