Southwest Airlines flight WN 3904: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 07:55 Phoenix Sky Harbor (PHX) 4 12:55 Saint Louis (STL) 2
WN 3904 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-04-12 through 2026-05-17
Sun 07:55 Phoenix Sky Harbor (PHX) 4 12:55 Saint Louis (STL) 2
WN 3904 Non-stop Boeing 737-800 (73H) 3:00 Operates only on 2026-05-31
Mon,Thu,Fri 08:10 Phoenix Sky Harbor (PHX) 4 13:15 Saint Louis (STL) 2
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-04-09 through 2026-06-01
Tue 08:45 San Diego (SAN) 1 16:50 Orlando (MCO)
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 5:05 Effective 2026-08-04 through 2026-09-29
Tue,Wed 08:55 Phoenix Sky Harbor (PHX) 4 13:50 Saint Louis (STL) 2
WN 3904 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-04-07 through 2026-06-03
Wed 09:00 Phoenix Sky Harbor (PHX) 4 10:25 Ontario, Los Angeles (ONT) 4
WN 3904 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-08-05 through 2026-09-30
Sun 09:30 Phoenix Sky Harbor (PHX) 4 14:25 Saint Louis (STL) 2
WN 3904 Non-stop Boeing 737-800 (73H) 2:55 Operates only on 2026-05-24
Fri,Sun 10:10 Las Vegas Harry Reid (LAS) 1 11:15 Palm Springs (PSP)
WN 3904 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-01-02 through 2026-01-04
Sat 10:35 San Diego (SAN) 1 12:00 San Jose (SJC) B
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-06-06 through 2026-08-01
Sat 11:20 Atlanta (ATL) N 11:30 Nashville (BNA)
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Effective 2026-08-08 through 2026-09-26
Mon 13:45 Kansas City (MCI) 15:10 Milwaukee (MKE)
WN 3904 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2026-01-05
Sun 14:35 Denver (DEN) 20:25 Providence (PVD)
WN 3904 Non-stop Boeing 737-700 (Scimitar Winglets) 3:50 Effective 2026-08-09 through 2026-09-27
Sun 16:10 Minneapolis/Saint Paul (MSP) 2 17:45 Chicago Midway (MDW)
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 16:25 Minneapolis/Saint Paul (MSP) 2 17:55 Chicago Midway (MDW)
WN 3904 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-05 through 2026-04-06
Sat 16:30 Minneapolis/Saint Paul (MSP) 2 18:00 Chicago Midway (MDW)
WN 3904 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-07 through 2026-04-04
Tue,Wed 18:00 Minneapolis/Saint Paul (MSP) 2 19:30 Chicago Midway (MDW)
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 19:30 Phoenix Sky Harbor (PHX) 4 20:40 Ontario, Los Angeles (ONT) 4
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Effective 2026-08-06 through 2026-09-28
Tue,Wed 21:15 Saint Louis (STL) 2 22:55 Dallas Love Field (DAL) 1
WN 3904 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri,Sun 21:50 Saint Louis (STL) 2 23:30 Dallas Love Field (DAL) 1
WN 3904 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-06-04 through 2026-08-03
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3904: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3904
07:55
Phoenix Sky Harbor (PHX) 4

12:55
Saint Louis (STL) 2
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3904
07:55
Phoenix Sky Harbor (PHX) 4

12:55
Saint Louis (STL) 2
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3904
08:10
Phoenix Sky Harbor (PHX) 4

13:15
Saint Louis (STL) 2
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
08:45
San Diego (SAN) 1

16:50
Orlando (MCO)
Effective 2026-08-04 through 2026-09-29
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
08:55
Phoenix Sky Harbor (PHX) 4

13:50
Saint Louis (STL) 2
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3904
09:00
Phoenix Sky Harbor (PHX) 4

10:25
Ontario, Los Angeles (ONT) 4
Effective 2026-08-05 through 2026-09-30
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3904
09:30
Phoenix Sky Harbor (PHX) 4

14:25
Saint Louis (STL) 2
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3904
10:10
Las Vegas Harry Reid (LAS) 1

11:15
Palm Springs (PSP)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3904
10:35
San Diego (SAN) 1

12:00
San Jose (SJC) B
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
11:20
Atlanta (ATL) N

11:30
Nashville (BNA)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
13:45
Kansas City (MCI)

15:10
Milwaukee (MKE)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3904
14:35
Denver (DEN)

20:25
Providence (PVD)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3904
16:10
Minneapolis/Saint Paul (MSP) 2

17:45
Chicago Midway (MDW)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
16:25
Minneapolis/Saint Paul (MSP) 2

17:55
Chicago Midway (MDW)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3904
16:30
Minneapolis/Saint Paul (MSP) 2

18:00
Chicago Midway (MDW)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3904
18:00
Minneapolis/Saint Paul (MSP) 2

19:30
Chicago Midway (MDW)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
19:30
Phoenix Sky Harbor (PHX) 4

20:40
Ontario, Los Angeles (ONT) 4
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
21:15
Saint Louis (STL) 2

22:55
Dallas Love Field (DAL) 1
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3904
21:50
Saint Louis (STL) 2

23:30
Dallas Love Field (DAL) 1
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:40, non-stop
Boeing 737-800 (73H)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Nashville (BNA)
  • Denver (DEN) - Providence (PVD)
  • Kansas City (MCI) - Milwaukee (MKE)
  • Las Vegas Harry Reid (LAS) - Palm Springs (PSP)
  • Minneapolis/Saint Paul (MSP) - Chicago Midway (MDW)
  • Phoenix Sky Harbor (PHX) - Ontario, Los Angeles (ONT)
  • Phoenix Sky Harbor (PHX) - Saint Louis (STL)
  • Saint Louis (STL) - Dallas Love Field (DAL)
  • San Diego (SAN) - Orlando (MCO)
  • San Diego (SAN) - San Jose (SJC)
All Southwest Airlines flights
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