Southwest Airlines flight WN 3972: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 06:50 Knoxville (TYS) 06:50 Nashville (BNA)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-08-08 through 2026-09-26
Tue,Wed 07:00 Knoxville (TYS) 07:00 Nashville (BNA)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 07:05 Knoxville (TYS) 07:05 Nashville (BNA)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-08-06 through 2026-09-28
Sun 07:40 Knoxville (TYS) 07:40 Nashville (BNA)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-08-09 through 2026-09-27
Tue,Wed 19:00 Baltimore (BWI) 21:45 Miami (MIA)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-03-10 through 2026-04-01
Tue,Wed 19:10 Saint Louis (STL) 2 21:45 Pittsburgh (PIT)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-06-09 through 2026-07-29
Sat 19:20 Baltimore (BWI) 20:40 Buffalo (BUF)
WN 3972 Non-stop Boeing 737-800 (73H) 1:20 Effective 2026-04-11 through 2026-05-30
Mon,Thu,Fri 19:30 Austin (AUS) 20:50 Denver (DEN)
WN 3972 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2026-04-09 through 2026-06-01
Tue,Wed 19:35 Austin (AUS) 20:55 Denver (DEN)
WN 3972 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 19:55 Saint Louis (STL) 2 22:30 Pittsburgh (PIT)
WN 3972 Non-stop Boeing 737-800 (73H) 1:35 Effective 2026-06-04 through 2026-08-03
Sun 19:55 Saint Louis (STL) 2 22:30 Pittsburgh (PIT)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri,Sun 20:20 Baltimore (BWI) 23:00 Miami (MIA)
WN 3972 Non-stop Boeing 737-800 (73H) 2:40 Effective 2026-03-05 through 2026-04-06
Sat 20:20 Baltimore (BWI) 23:00 Miami (MIA)
WN 3972 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-03-07 through 2026-04-04
Sun 21:55 Baltimore (BWI) 23:15 Buffalo (BUF)
WN 3972 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Operates only on 2026-05-24
Mon 22:00 Las Vegas Harry Reid (LAS) 1 00:25 Salt Lake City (SLC)
WN 3972 Non-stop Boeing 737-800 (73H) 1:25 Operates only on 2026-01-05
The flight arrives 1 day after departure.
Sun 22:30 Baltimore (BWI) 23:45 Buffalo (BUF)
WN 3972 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-04-12 through 2026-05-17
Sun 22:30 Baltimore (BWI) 23:45 Buffalo (BUF)
WN 3972 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Operates only on 2026-05-31
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3972: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3972
06:50
Knoxville (TYS)

06:50
Nashville (BNA)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
07:00
Knoxville (TYS)

07:00
Nashville (BNA)
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
07:05
Knoxville (TYS)

07:05
Nashville (BNA)
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
07:40
Knoxville (TYS)

07:40
Nashville (BNA)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
19:00
Baltimore (BWI)

21:45
Miami (MIA)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
19:10
Saint Louis (STL) 2

21:45
Pittsburgh (PIT)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
19:20
Baltimore (BWI)

20:40
Buffalo (BUF)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3972
19:30
Austin (AUS)

20:50
Denver (DEN)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3972
19:35
Austin (AUS)

20:55
Denver (DEN)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3972
19:55
Saint Louis (STL) 2

22:30
Pittsburgh (PIT)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3972
19:55
Saint Louis (STL) 2

22:30
Pittsburgh (PIT)
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
20:20
Baltimore (BWI)

23:00
Miami (MIA)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3972
20:20
Baltimore (BWI)

23:00
Miami (MIA)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3972
21:55
Baltimore (BWI)

23:15
Buffalo (BUF)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3972
22:00
Las Vegas Harry Reid (LAS) 1

00:25(+1)
Salt Lake City (SLC)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN3972
22:30
Baltimore (BWI)

23:45
Buffalo (BUF)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3972
22:30
Baltimore (BWI)

23:45
Buffalo (BUF)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
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Parallax here
This flight number is listed as serving the following routes:
  • Austin (AUS) - Denver (DEN)
  • Baltimore (BWI) - Buffalo (BUF)
  • Baltimore (BWI) - Miami (MIA)
  • Knoxville (TYS) - Nashville (BNA)
  • Las Vegas Harry Reid (LAS) - Salt Lake City (SLC)
  • Saint Louis (STL) - Pittsburgh (PIT)
All Southwest Airlines flights
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