Southwest Airlines flight WN 4312: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 06:10 Raleigh/Durham (RDU) 1 07:25 Saint Louis (STL) 2
WN 4312 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-03-08 through 2026-04-05
Sat 06:20 Raleigh/Durham (RDU) 1 07:40 Saint Louis (STL) 2
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2026-03-07 through 2026-04-04
Mon,Thu,Fri 06:25 Raleigh/Durham (RDU) 1 07:45 Saint Louis (STL) 2
WN 4312 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-03-05 through 2026-04-06
Tue,Wed 06:25 Raleigh/Durham (RDU) 1 07:45 Saint Louis (STL) 2
WN 4312 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 06:30 Omaha (OMA) 07:40 Las Vegas Harry Reid (LAS) 1
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 06:30 Omaha (OMA) 07:40 Las Vegas Harry Reid (LAS) 1
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-02-20 through 2026-03-01
Sat 07:00 Omaha (OMA) 08:15 Las Vegas Harry Reid (LAS) 1
WN 4312 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-14 through 2026-02-28
Mon 09:00 New York LaGuardia (LGA) B 10:25 Chicago Midway (MDW)
WN 4312 Non-stop Boeing 737-800 (73H) 2:25 Operates only on 2026-01-05
Tue,Wed 11:20 Saint Louis (STL) 2 12:30 Denver (DEN)
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 11:30 Saint Louis (STL) 2 12:40 Denver (DEN)
WN 4312 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-06-04 through 2026-08-03
Sat 11:40 Las Vegas Harry Reid (LAS) 1 17:20 Birmingham (BHM)
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-08-08 through 2026-09-26
Sun 12:50 Saint Louis (STL) 2 14:05 Denver (DEN)
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-06-07 through 2026-08-02
Sat 14:25 Ronald Reagan Washington (DCA) 1 16:50 Dallas Love Field (DAL) 1
WN 4312 Non-stop Boeing 737-700 (Scimitar Winglets) 3:25 Operates only on 2026-01-03
Tue,Wed 18:25 Salt Lake City (SLC) 19:10 Sacramento (SMF) B
WN 4312 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2026-04-07 through 2026-06-03
Mon,Tue,Fri,Sun 20:10 Ronald Reagan Washington (DCA) 1 22:50 Dallas Love Field (DAL) 1
WN 4312 Non-stop Boeing 737-800 (73H) 3:40 Valid until 2026-01-04
Sun 20:20 Salt Lake City (SLC) 21:10 Sacramento (SMF) B
WN 4312 Non-stop Boeing 737-800 (73H) 1:50 Effective 2026-04-12 through 2026-05-17
Sun 20:20 Salt Lake City (SLC) 21:10 Sacramento (SMF) B
WN 4312 Non-stop Boeing 737-800 (73H) 1:50 Operates only on 2026-05-31
Mon,Thu,Fri 20:55 Salt Lake City (SLC) 21:40 Sacramento (SMF) B
WN 4312 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-04-09 through 2026-06-01
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4312: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4312
06:10
Raleigh/Durham (RDU) 1

07:25
Saint Louis (STL) 2
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4312
06:20
Raleigh/Durham (RDU) 1

07:40
Saint Louis (STL) 2
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
06:25
Raleigh/Durham (RDU) 1

07:45
Saint Louis (STL) 2
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4312
06:25
Raleigh/Durham (RDU) 1

07:45
Saint Louis (STL) 2
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
06:30
Omaha (OMA)

07:40
Las Vegas Harry Reid (LAS) 1
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
06:30
Omaha (OMA)

07:40
Las Vegas Harry Reid (LAS) 1
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
07:00
Omaha (OMA)

08:15
Las Vegas Harry Reid (LAS) 1
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:15, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
09:00
New York LaGuardia (LGA) B

10:25
Chicago Midway (MDW)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
11:20
Saint Louis (STL) 2

12:30
Denver (DEN)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
11:30
Saint Louis (STL) 2

12:40
Denver (DEN)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
11:40
Las Vegas Harry Reid (LAS) 1

17:20
Birmingham (BHM)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
12:50
Saint Louis (STL) 2

14:05
Denver (DEN)
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
14:25
Ronald Reagan Washington (DCA) 1

16:50
Dallas Love Field (DAL) 1
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4312
18:25
Salt Lake City (SLC)

19:10
Sacramento (SMF) B
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4312
20:10
Ronald Reagan Washington (DCA) 1

22:50
Dallas Love Field (DAL) 1
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
20:20
Salt Lake City (SLC)

21:10
Sacramento (SMF) B
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
20:20
Salt Lake City (SLC)

21:10
Sacramento (SMF) B
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4312
20:55
Salt Lake City (SLC)

21:40
Sacramento (SMF) B
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737-800 (73H)
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This flight number is listed as serving the following routes:
  • Las Vegas Harry Reid (LAS) - Birmingham (BHM)
  • New York LaGuardia (LGA) - Chicago Midway (MDW)
  • Omaha (OMA) - Las Vegas Harry Reid (LAS)
  • Raleigh/Durham (RDU) - Saint Louis (STL)
  • Ronald Reagan Washington (DCA) - Dallas Love Field (DAL)
  • Saint Louis (STL) - Denver (DEN)
  • Salt Lake City (SLC) - Sacramento (SMF)
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