Southwest Airlines flight WN 4399: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon 07:20 Santa Ana (SNA) 10:35 Denver (DEN)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Operates only on 2026-01-05
Sun 07:40 Las Vegas Harry Reid (LAS) 1 10:30 Denver (DEN)
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-04-12 through 2026-05-17
Sun 07:40 Las Vegas Harry Reid (LAS) 1 10:30 Denver (DEN)
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Operates only on 2026-05-31
Sat 08:15 Baltimore (BWI) 10:15 Savannah (SAV)
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-08-08 through 2026-09-26
Mon,Thu,Fri 08:40 Dallas Love Field (DAL) 1 09:50 Lubbock (LBB)
WN 4399 Non-stop Boeing 737-800 (73H) 1:10 Effective 2026-06-04 through 2026-08-03
Sun 08:55 Las Vegas Harry Reid (LAS) 1 11:50 Denver (DEN)
WN 4399 Non-stop Boeing 737-800 (73H) 1:55 Operates only on 2026-05-24
Tue,Wed 09:15 Dallas Love Field (DAL) 1 10:25 Lubbock (LBB)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-06-09 through 2026-07-29
Sun 10:30 Dallas Love Field (DAL) 1 11:40 Lubbock (LBB)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 10:40 San Diego (SAN) 1 12:00 Las Vegas Harry Reid (LAS) 1
WN 4399 Non-stop Boeing 737-800 (73H) 1:20 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 10:40 San Diego (SAN) 1 12:00 Las Vegas Harry Reid (LAS) 1
WN 4399 Non-stop Boeing 737-800 (73H) 1:20 Effective 2026-02-20 through 2026-03-01
Sat 10:45 Austin (AUS) 17:00 Luis Munoz Marin, San Juan (SJU) B
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Operates only on 2026-03-07
Sat 10:45 Austin (AUS) 16:15 Luis Munoz Marin, San Juan (SJU) B
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 4:30 Effective 2026-03-14 through 2026-04-04
Sat 10:50 San Diego (SAN) 1 12:10 Las Vegas Harry Reid (LAS) 1
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2026-01-10 through 2026-02-07
Mon-Fri,Sun 11:10 San Diego (SAN) 1 12:35 Las Vegas Harry Reid (LAS) 1
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-01-06 through 2026-02-11
Tue-Thu,Sun 11:10 San Diego (SAN) 1 12:35 Las Vegas Harry Reid (LAS) 1
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-15 through 2026-02-19
Mon-Wed 11:10 San Diego (SAN) 1 12:35 Las Vegas Harry Reid (LAS) 1
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-23 through 2026-03-04
Tue 12:15 Salt Lake City (SLC) 13:45 Denver (DEN)
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-04 through 2026-09-29
Mon,Thu,Fri 12:40 Las Vegas Harry Reid (LAS) 1 19:10 Indianapolis (IND)
WN 4399 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 12:40 Las Vegas Harry Reid (LAS) 1 19:10 Indianapolis (IND)
WN 4399 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-02-20 through 2026-03-01
Sat 13:00 Las Vegas Harry Reid (LAS) 1 15:30 Salt Lake City (SLC)
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-01-10 through 2026-02-07
Thu,Fri,Sun 13:15 Las Vegas Harry Reid (LAS) 1 17:35 Oklahoma City (OKC)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-01-11 through 2026-01-16
Mon,Sun 13:15 Las Vegas Harry Reid (LAS) 1 17:35 Oklahoma City (OKC)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 13:15 Las Vegas Harry Reid (LAS) 1 17:35 Oklahoma City (OKC)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-02-01 through 2026-02-06
Mon,Sun 13:15 Las Vegas Harry Reid (LAS) 1 17:35 Oklahoma City (OKC)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 13:15 Las Vegas Harry Reid (LAS) 1 17:35 Oklahoma City (OKC)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-02-17 through 2026-02-23
Mon 13:15 Las Vegas Harry Reid (LAS) 1 17:35 Oklahoma City (OKC)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Operates only on 2026-03-02
Wed 13:50 Las Vegas Harry Reid (LAS) 1 20:30 Indianapolis (IND)
WN 4399 Non-stop Boeing 737-800 (73H) 3:40 Effective 2026-08-05 through 2026-09-30
Sun 15:25 Denver (DEN) 16:10 Colorado Springs (COS)
WN 4399 Non-stop Boeing 737 MAX 8 (7M8) 0:45 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 17:30 San Antonio (SAT) A 21:00 Orlando (MCO)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2026-03-05 through 2026-04-06
Sun 17:40 San Antonio (SAT) A 21:10 Orlando (MCO)
WN 4399 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-03-08 through 2026-04-05
Tue,Wed 20:05 San Antonio (SAT) A 23:35 Orlando (MCO)
WN 4399 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 20:45 Denver (DEN) 21:35 Colorado Springs (COS)
WN 4399 Non-stop Boeing 737-700 (Scimitar Winglets) 0:50 Effective 2026-08-06 through 2026-09-28
Non-Direct Flights:
Mon,Thu,Fri 10:40 San Diego (SAN) 1 19:10 Indianapolis (IND)
WN 4399 1-stop Boeing 737-800 (73H) 5:30 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 10:40 San Diego (SAN) 1 19:10 Indianapolis (IND)
WN 4399 1-stop Boeing 737-800 (73H) 5:30 Effective 2026-02-20 through 2026-03-01
Sat 10:50 San Diego (SAN) 1 15:30 Salt Lake City (SLC)
WN 4399 1-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-01-10 through 2026-02-07
Thu,Fri,Sun 11:10 San Diego (SAN) 1 17:35 Oklahoma City (OKC)
WN 4399 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Effective 2026-01-11 through 2026-01-16
Mon,Sun 11:10 San Diego (SAN) 1 17:35 Oklahoma City (OKC)
WN 4399 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 11:10 San Diego (SAN) 1 17:35 Oklahoma City (OKC)
WN 4399 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Effective 2026-02-01 through 2026-02-06
Mon,Sun 11:10 San Diego (SAN) 1 17:35 Oklahoma City (OKC)
WN 4399 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 11:10 San Diego (SAN) 1 17:35 Oklahoma City (OKC)
WN 4399 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Effective 2026-02-17 through 2026-02-23
Mon 11:10 San Diego (SAN) 1 17:35 Oklahoma City (OKC)
WN 4399 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Operates only on 2026-03-02
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This flight number is listed as serving the following routes:
Southwest Airlines flight WN 4399: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:

Southwest Airlines WN4399
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
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 WN4399
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 WN4399
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
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 WN4399
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-03-14 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-15 through 2026-02-19
Mon
-
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-23 through 2026-03-04
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-08-04 through 2026-09-29
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-08-05 through 2026-09-30
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 0:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4399
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 0:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 5:30, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:30, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:40, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4399
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4399
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Luis Munoz Marin, San Juan (SJU)
  • Baltimore (BWI) - Savannah (SAV)
  • Dallas Love Field (DAL) - Lubbock (LBB)
  • Denver (DEN) - Colorado Springs (COS)
  • Las Vegas Harry Reid (LAS) - Denver (DEN)
  • Las Vegas Harry Reid (LAS) - Indianapolis (IND)
  • Las Vegas Harry Reid (LAS) - Oklahoma City (OKC)
  • Las Vegas Harry Reid (LAS) - Salt Lake City (SLC)
  • Salt Lake City (SLC) - Denver (DEN)
  • San Antonio (SAT) - Orlando (MCO)
  • San Diego (SAN) - Indianapolis (IND)
  • San Diego (SAN) - Las Vegas Harry Reid (LAS)
  • San Diego (SAN) - Oklahoma City (OKC)
  • San Diego (SAN) - Salt Lake City (SLC)
  • Santa Ana (SNA) - Denver (DEN)