Southwest Airlines flight WN 3812: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 06:45 Las Vegas Harry Reid (LAS) 1 11:55 Saint Louis (STL) 2
WN 3812 Non-stop Boeing 737-700 (73W) 3:10 Effective 2025-08-05 through 2025-10-01
Tue,Wed 07:25 Midway, Chicago (MDW) 10:10 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (73W) 1:45 Effective 2025-06-10 through 2025-07-30
Mon,Thu,Fri 07:50 Saint Louis (STL) 2 11:30 Boston Logan (BOS) B
WN 3812 Non-stop Boeing 737-800 (73H) 2:40 Effective 2025-08-07 through 2025-09-29
Sun 08:00 Saint Louis (STL) 2 11:40 Boston Logan (BOS) B
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-08-10 through 2025-08-24
Sun 08:00 Saint Louis (STL) 2 11:40 Boston Logan (BOS) B
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-09-07 through 2025-09-28
Mon,Thu,Fri 08:40 Los Angeles (LAX) 1 10:15 Phoenix Sky Harbor (PHX) 4
WN 3812 Non-stop Boeing 737-700 (73W) 1:35 Valid until 2025-06-02
Mon,Thu,Fri,Sun 09:10 Milwaukee (MKE) 12:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-02 through 2025-11-16
Mon-Wed,Fri,Sun 09:10 Milwaukee (MKE) 12:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-21 through 2025-11-28
Mon,Sun 09:10 Milwaukee (MKE) 12:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-01 through 2025-12-07
Thu,Fri,Sun 09:10 Milwaukee (MKE) 12:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-12 through 2025-12-21
Mon,Tue,Fri,Sun 09:10 Milwaukee (MKE) 12:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-22 through 2026-01-05
Sun 10:00 Saint Louis (STL) 2 13:35 Boston Logan (BOS) B
WN 3812 Non-stop Boeing 737-800 (73H) 2:35 Operates only on 2025-08-31
Sat 10:10 Midway, Chicago (MDW) 12:55 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (73W) 1:45 Effective 2025-06-07 through 2025-08-02
Sat 10:50 Saint Louis (STL) 2 14:25 Boston Logan (BOS) B
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2025-08-09 through 2025-09-27
Sat 10:50 Milwaukee (MKE) 13:45 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2025-11-22 through 2025-11-29
Sat 10:50 Milwaukee (MKE) 13:45 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2025-12-20 through 2026-01-03
Mon,Thu,Fri 11:00 Phoenix Sky Harbor (PHX) 4 18:05 Buffalo (BUF)
WN 3812 Non-stop Boeing 737-700 (73W) 4:05 Valid until 2025-06-02
Tue,Wed 12:35 Saint Louis (STL) 2 16:10 Boston Logan (BOS) B
WN 3812 Non-stop Boeing 737-700 (73W) 2:35 Effective 2025-08-05 through 2025-10-01
Tue,Wed 15:55 Baltimore (BWI) 17:05 Buffalo (BUF)
WN 3812 Non-stop Boeing 737-800 (73H) 1:10 Valid until 2025-06-04
Sun 16:50 Baltimore (BWI) 18:00 Buffalo (BUF)
WN 3812 Non-stop Boeing 737-800 (73H) 1:10 Operates only on 2025-05-25
Fri 17:10 Midway, Chicago (MDW) 20:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Operates only on 2025-07-04
Tue,Wed 17:25 Milwaukee (MKE) 20:25 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2025-11-04 through 2025-11-12
Mon-Thu 17:25 Milwaukee (MKE) 20:25 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2025-11-17 through 2025-11-20
Mon-Fri 17:25 Milwaukee (MKE) 20:25 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2025-12-02 through 2025-12-11
Mon-Wed 17:25 Milwaukee (MKE) 20:25 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2025-12-15 through 2025-12-17
Wed,Thu 17:25 Milwaukee (MKE) 20:25 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2025-12-24 through 2026-01-01
Sun 17:30 Baltimore (BWI) 18:40 Buffalo (BUF)
WN 3812 Non-stop Boeing 737-800 (73H) 1:10 Valid until 2025-05-18
Sun 17:30 Baltimore (BWI) 18:40 Buffalo (BUF)
WN 3812 Non-stop Boeing 737-800 (73H) 1:10 Operates only on 2025-06-01
Tue,Wed 17:55 Buffalo (BUF) 20:35 Tampa (TPA)
WN 3812 Non-stop Boeing 737-800 (73H) 2:40 Valid until 2025-06-04
Sat 18:25 Buffalo (BUF) 21:05 Tampa (TPA)
WN 3812 Non-stop Boeing 737-700 (73W) 2:40 Valid until 2025-05-31
Mon,Thu,Fri 18:40 Buffalo (BUF) 21:20 Tampa (TPA)
WN 3812 Non-stop Boeing 737-700 (73W) 2:40 Valid until 2025-06-02
Sun 19:25 Buffalo (BUF) 22:05 Tampa (TPA)
WN 3812 Non-stop Boeing 737-800 (73H) 2:40 Valid until 2025-05-18
Sun 19:25 Buffalo (BUF) 22:05 Tampa (TPA)
WN 3812 Non-stop Boeing 737-800 (73H) 2:40 Operates only on 2025-06-01
Sun 19:30 Midway, Chicago (MDW) 22:20 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2025-06-08 through 2025-08-03
Mon,Thu,Fri 20:10 Midway, Chicago (MDW) 23:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 20:10 Midway, Chicago (MDW) 23:00 Ronald Reagan Washington (DCA)
WN 3812 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2025-07-07 through 2025-08-04
Non-Direct Flights:
Tue,Wed 06:45 Las Vegas Harry Reid (LAS) 1 16:10 Boston Logan (BOS) B
WN 3812 1-stop Boeing 737-700 (73W) 6:25 Effective 2025-08-05 through 2025-10-01
Mon,Thu,Fri 08:40 Los Angeles (LAX) 1 18:05 Buffalo (BUF)
WN 3812 1-stop Boeing 737-700 (73W) 6:25 Valid until 2025-06-02
Mon,Thu,Fri 11:00 Phoenix Sky Harbor (PHX) 4 21:20 Tampa (TPA)
WN 3812 1-stop Boeing 737-700 (73W) 7:20 Valid until 2025-06-02
Tue,Wed 15:55 Baltimore (BWI) 20:35 Tampa (TPA)
WN 3812 1-stop Boeing 737-800 (73H) 4:40 Valid until 2025-06-04
Sun 17:30 Baltimore (BWI) 22:05 Tampa (TPA)
WN 3812 1-stop Boeing 737-800 (73H) 4:35 Valid until 2025-05-18
Sun 17:30 Baltimore (BWI) 22:05 Tampa (TPA)
WN 3812 1-stop Boeing 737-800 (73H) 4:35 Operates only on 2025-06-01
Mon,Thu,Fri 08:40 Los Angeles (LAX) 1 21:20 Tampa (TPA)
WN 3812 2-stop Boeing 737-700 (73W) 9:40 Valid until 2025-06-02
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This flight number is listed as serving the following routes:
Southwest Airlines flight WN 3812: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:

Southwest Airlines WN3812
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:10, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-11-21 through 2025-11-28
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-12-01 through 2025-12-07
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-12-12 through 2025-12-21
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-12-22 through 2026-01-05
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:05, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3812
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3812
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN3812
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:25, 1-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 6:25, 1-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 7:20, 1-stop
Boeing 737-700 (73W)

Southwest Airlines WN3812
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:40, 1-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:35, 1-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:35, 1-stop
Boeing 737-800 (73H)

Southwest Airlines WN3812
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 9:40, 2-stop
Boeing 737-700 (73W)
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This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Buffalo (BUF)
  • Baltimore (BWI) - Tampa (TPA)
  • Buffalo (BUF) - Tampa (TPA)
  • Las Vegas Harry Reid (LAS) - Boston Logan (BOS)
  • Las Vegas Harry Reid (LAS) - Saint Louis (STL)
  • Los Angeles (LAX) - Buffalo (BUF)
  • Los Angeles (LAX) - Phoenix Sky Harbor (PHX)
  • Los Angeles (LAX) - Tampa (TPA)
  • Midway, Chicago (MDW) - Ronald Reagan Washington (DCA)
  • Milwaukee (MKE) - Ronald Reagan Washington (DCA)
  • Phoenix Sky Harbor (PHX) - Buffalo (BUF)
  • Phoenix Sky Harbor (PHX) - Tampa (TPA)
  • Saint Louis (STL) - Boston Logan (BOS)