Southwest Airlines flight WN 3945: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu,Fri,Sun 05:40 Reno (RNO) 07:25 San Diego (SAN) 1
WN 3945 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-01-11 through 2026-01-16
Mon,Sun 05:40 Reno (RNO) 07:25 San Diego (SAN) 1
WN 3945 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 05:40 Reno (RNO) 07:25 San Diego (SAN) 1
WN 3945 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-02-01 through 2026-02-06
Mon,Sun 05:40 Reno (RNO) 07:25 San Diego (SAN) 1
WN 3945 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 05:40 Reno (RNO) 07:25 San Diego (SAN) 1
WN 3945 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-02-17 through 2026-02-23
Mon 05:40 Reno (RNO) 07:25 San Diego (SAN) 1
WN 3945 Non-stop Boeing 737-800 (73H) 1:45 Operates only on 2026-03-02
Mon 06:05 Oklahoma City (OKC) 06:50 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Operates only on 2026-01-05
Sat 07:50 San Diego (SAN) 1 11:15 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-01-10 through 2026-02-07
Mon,Thu,Fri 07:55 San Diego (SAN) 1 11:20 Denver (DEN)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 07:55 San Diego (SAN) 1 11:20 Denver (DEN)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-02-20 through 2026-03-01
Thu,Fri,Sun 08:05 San Diego (SAN) 1 11:30 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-01-11 through 2026-01-16
Mon,Sun 08:05 San Diego (SAN) 1 11:30 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 08:05 San Diego (SAN) 1 11:30 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-02-01 through 2026-02-06
Mon,Sun 08:05 San Diego (SAN) 1 11:30 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 08:05 San Diego (SAN) 1 11:30 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-02-17 through 2026-02-23
Mon 08:05 San Diego (SAN) 1 11:30 Denver (DEN)
WN 3945 Non-stop Boeing 737-800 (73H) 2:25 Operates only on 2026-03-02
Mon-Fri 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2026-01-18 through 2026-01-23
Mon-Fri 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2026-01-26 through 2026-02-04
Sun 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2026-02-08
Tue,Wed 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-02-10 through 2026-02-11
Wed 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2026-02-18
Tue,Wed 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-02-24 through 2026-02-25
Tue 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2026-03-03
Wed 08:35 San Diego (SAN) 1 12:00 Denver (DEN)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Operates only on 2026-03-04
Mon,Thu,Fri 09:40 Kansas City (MCI) 13:40 Fort Lauderdale (FLL) 1
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-08-06 through 2026-09-28
Wed,Thu 11:30 Oklahoma City (OKC) 12:10 Denver (DEN)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Valid until 2026-01-01
Tue,Wed 11:40 Tampa (TPA) 13:25 Milwaukee (MKE)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-08-04 through 2026-09-30
Sun 11:50 Tampa (TPA) 13:35 Milwaukee (MKE)
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-08-09 through 2026-09-27
Sat 14:25 Salt Lake City (SLC) 18:25 Houston Hobby (HOU)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-06-06 through 2026-08-01
Sat 14:40 Tampa (TPA) 16:25 Milwaukee (MKE)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-08-08 through 2026-09-26
Tue,Wed 19:10 Pittsburgh (PIT) 20:00 Saint Louis (STL) 2
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 20:05 Pittsburgh (PIT) 20:55 Saint Louis (STL) 2
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2026-04-09 through 2026-06-01
Sun 20:15 Pittsburgh (PIT) 21:05 Saint Louis (STL) 2
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-04-12 through 2026-05-17
Sun 20:15 Pittsburgh (PIT) 21:05 Saint Louis (STL) 2
WN 3945 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Operates only on 2026-05-31
Sat 23:55 Phoenix Sky Harbor (PHX) 4 01:05 Tucson (TUS)
WN 3945 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Operates only on 2026-03-07
The flight arrives 1 day after departure.
Non-Direct Flights:
Thu,Fri,Sun 05:40 Reno (RNO) 11:30 Denver (DEN)
WN 3945 1-stop Boeing 737-800 (73H) 4:50 Effective 2026-01-11 through 2026-01-16
Mon,Sun 05:40 Reno (RNO) 11:30 Denver (DEN)
WN 3945 1-stop Boeing 737-800 (73H) 4:50 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 05:40 Reno (RNO) 11:30 Denver (DEN)
WN 3945 1-stop Boeing 737-800 (73H) 4:50 Effective 2026-02-01 through 2026-02-06
Mon,Sun 05:40 Reno (RNO) 11:30 Denver (DEN)
WN 3945 1-stop Boeing 737-800 (73H) 4:50 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 05:40 Reno (RNO) 11:30 Denver (DEN)
WN 3945 1-stop Boeing 737-800 (73H) 4:50 Effective 2026-02-17 through 2026-02-23
Mon 05:40 Reno (RNO) 11:30 Denver (DEN)
WN 3945 1-stop Boeing 737-800 (73H) 4:50 Operates only on 2026-03-02
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This flight number is listed as serving the following routes:
Southwest Airlines flight WN 3945: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:

Southwest Airlines WN3945
05:40

07:25
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
05:40

07:25
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
05:40

07:25
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
05:40

07:25
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
05:40

07:25
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
05:40

07:25
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
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 WN3945
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-02-10 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-02-18
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-02-24 through 2026-02-25
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-03-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-03-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3945
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3945
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN3945
05:40

11:30
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:50, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3945
05:40

11:30
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:50, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3945
05:40

11:30
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:50, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3945
05:40

11:30
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:50, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3945
05:40

11:30
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:50, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3945
05:40

11:30
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:50, 1-stop
Boeing 737-800 (73H)
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This flight number is listed as serving the following routes:
  • Kansas City (MCI) - Fort Lauderdale (FLL)
  • Oklahoma City (OKC) - Denver (DEN)
  • Phoenix Sky Harbor (PHX) - Tucson (TUS)
  • Pittsburgh (PIT) - Saint Louis (STL)
  • Reno (RNO) - Denver (DEN)
  • Reno (RNO) - San Diego (SAN)
  • Salt Lake City (SLC) - Houston Hobby (HOU)
  • San Diego (SAN) - Denver (DEN)
  • Tampa (TPA) - Milwaukee (MKE)