Southwest Airlines flight WN 4340: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 07:10 Fort Myers (RSW) 08:55 Saint Louis (STL) 2
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-03-07 through 2026-04-04
Mon,Thu,Fri 08:00 Fort Myers (RSW) 09:45 Saint Louis (STL) 2
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-03-05 through 2026-04-06
Sun 08:35 Fort Myers (RSW) 10:20 Saint Louis (STL) 2
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 10:20 Saint Louis (STL) 2 12:50 Detroit (DTW) E
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-05 through 2026-04-06
Tue,Wed 11:05 Saint Louis (STL) 2 13:35 Detroit (DTW) E
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-03-10 through 2026-04-01
Sat 11:45 Austin (AUS) 15:35 Raleigh/Durham (RDU) 1
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2026-08-08 through 2026-09-26
Sun 14:50 Austin (AUS) 18:40 Raleigh/Durham (RDU) 1
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 2:50 Effective 2026-08-09 through 2026-09-27
Fri,Sun 16:15 Santa Ana (SNA) 18:30 Phoenix Sky Harbor (PHX) 4
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2026-01-02 through 2026-01-04
Sat 16:30 Santa Ana (SNA) 18:50 Phoenix Sky Harbor (PHX) 4
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Operates only on 2026-01-03
Thu,Fri 17:40 Las Vegas Harry Reid (LAS) 1 20:05 Portland (PDX)
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-02-12 through 2026-02-13
Mon 17:40 Las Vegas Harry Reid (LAS) 1 20:05 Portland (PDX)
WN 4340 Non-stop Boeing 737-800 (73H) 2:25 Operates only on 2026-02-16
Thu,Fri,Sun 17:40 Las Vegas Harry Reid (LAS) 1 20:05 Portland (PDX)
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-02-20 through 2026-03-01
Sun 19:45 Chicago Midway (MDW) 21:55 Detroit (DTW) E
WN 4340 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-06-07 through 2026-08-02
Tue,Wed 21:35 Las Vegas Harry Reid (LAS) 1 00:20 El Paso (ELP)
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2026-06-09 through 2026-07-29
The flight arrives 1 day after departure.
Mon,Thu,Fri 21:55 Las Vegas Harry Reid (LAS) 1 00:40 El Paso (ELP)
WN 4340 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2026-06-04 through 2026-08-03
The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 08:00 Fort Myers (RSW) 12:50 Detroit (DTW) E
WN 4340 1-stop Boeing 737-700 (Scimitar Winglets) 4:50 Effective 2026-03-05 through 2026-04-06
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4340: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4340
07:10
Fort Myers (RSW)

08:55
Saint Louis (STL) 2
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4340
08:00
Fort Myers (RSW)

09:45
Saint Louis (STL) 2
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4340
08:35
Fort Myers (RSW)

10:20
Saint Louis (STL) 2
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4340
10:20
Saint Louis (STL) 2

12:50
Detroit (DTW) E
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 WN4340
11:05
Saint Louis (STL) 2

13:35
Detroit (DTW) E
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 WN4340
11:45
Austin (AUS)

15:35
Raleigh/Durham (RDU) 1
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4340
14:50
Austin (AUS)

18:40
Raleigh/Durham (RDU) 1
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4340
16:15
Santa Ana (SNA)

18:30
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4340
16:30
Santa Ana (SNA)

18:50
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4340
17:40
Las Vegas Harry Reid (LAS) 1

20:05
Portland (PDX)
Effective 2026-02-12 through 2026-02-13
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4340
17:40
Las Vegas Harry Reid (LAS) 1

20:05
Portland (PDX)
Operates only on 2026-02-16
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4340
17:40
Las Vegas Harry Reid (LAS) 1

20:05
Portland (PDX)
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4340
19:45
Chicago Midway (MDW)

21:55
Detroit (DTW) E
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4340
21:35
Las Vegas Harry Reid (LAS) 1

00:20(+1)
El Paso (ELP)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN4340
21:55
Las Vegas Harry Reid (LAS) 1

00:40(+1)
El Paso (ELP)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN4340
08:00
Fort Myers (RSW)

12:50
Detroit (DTW) E
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:50, 1-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Raleigh/Durham (RDU)
  • Chicago Midway (MDW) - Detroit (DTW)
  • Fort Myers (RSW) - Detroit (DTW)
  • Fort Myers (RSW) - Saint Louis (STL)
  • Las Vegas Harry Reid (LAS) - El Paso (ELP)
  • Las Vegas Harry Reid (LAS) - Portland (PDX)
  • Saint Louis (STL) - Detroit (DTW)
  • Santa Ana (SNA) - Phoenix Sky Harbor (PHX)
All Southwest Airlines flights
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