Southwest Airlines flight WN 4451: Multiple routes

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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Flights:
Sun 07:15 Las Vegas Harry Reid (LAS) 1 08:45 San Jose (SJC) B
WN 4451 Non-stop Boeing 737-800 (73H) 1:30 Operates only on 2025-05-25
Sun 07:45 Las Vegas Harry Reid (LAS) 1 09:15 San Jose (SJC) B
WN 4451 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Valid until 2025-05-18
Sun 07:45 Las Vegas Harry Reid (LAS) 1 09:15 San Jose (SJC) B
WN 4451 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Operates only on 2025-06-01
Mon,Thu,Fri 07:50 Las Vegas Harry Reid (LAS) 1 09:20 San Jose (SJC) B
WN 4451 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Valid until 2025-06-02
Mon,Thu,Fri 14:00 Louisville (SDF) 15:25 Houston Hobby (HOU)
WN 4451 Non-stop Boeing 737-700 (73W) 2:25 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 14:00 Louisville (SDF) 15:25 Houston Hobby (HOU)
WN 4451 Non-stop Boeing 737-700 (73W) 2:25 Effective 2025-07-07 through 2025-08-04
Tue,Wed 14:15 Louisville (SDF) 15:40 Houston Hobby (HOU)
WN 4451 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2025-06-10 through 2025-07-30
Sun 15:40 Louisville (SDF) 17:05 Houston Hobby (HOU)
WN 4451 Non-stop Boeing 737-800 (73H) 2:25 Effective 2025-06-08 through 2025-08-03
Sat 16:25 New York LaGuardia (LGA) B 18:20 Saint Louis (STL) 2
WN 4451 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2025-11-22 through 2025-11-29
Sat 16:25 New York LaGuardia (LGA) B 18:20 Saint Louis (STL) 2
WN 4451 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2025-12-20 through 2026-01-03
Mon,Thu,Fri 17:10 Islip (ISP) 20:00 Orlando (MCO)
WN 4451 Non-stop Boeing 737-700 (73W) 2:50 Effective 2025-08-07 through 2025-09-29
Sun 18:55 Islip (ISP) 21:45 Orlando (MCO)
WN 4451 Non-stop Boeing 737-800 (73H) 2:50 Effective 2025-08-10 through 2025-08-24
Sun 18:55 Islip (ISP) 21:45 Orlando (MCO)
WN 4451 Non-stop Boeing 737-800 (73H) 2:50 Effective 2025-09-07 through 2025-09-28
Sat 18:55 Saint Louis (STL) 2 20:55 San Diego (SAN) 1
WN 4451 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2025-11-22 through 2025-11-29
Sat 18:55 Saint Louis (STL) 2 20:55 San Diego (SAN) 1
WN 4451 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2025-12-20 through 2026-01-03
Daily 21:05 San Francisco (SFO) 2 05:15 Baltimore (BWI)
WN 4451 Non-stop Boeing 737-800 (73H) 5:10 Effective 2025-10-02 through 2025-10-31
The flight arrives 1 day after departure.
Sat 21:05 San Francisco (SFO) 2 04:15 Baltimore (BWI)
WN 4451 Non-stop Boeing 737-800 (73H) 5:10 Operates only on 2025-11-01
The flight arrives 1 day after departure.
Sat 21:35 San Diego (SAN) 1 22:55 Fresno (FAT)
WN 4451 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-11-22 through 2025-11-29
Sat 21:35 San Diego (SAN) 1 22:55 Fresno (FAT)
WN 4451 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-12-20 through 2026-01-03
Non-Direct Flights:
Sat 16:25 New York LaGuardia (LGA) B 20:55 San Diego (SAN) 1
WN 4451 1-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2025-11-22 through 2025-11-29
Sat 16:25 New York LaGuardia (LGA) B 20:55 San Diego (SAN) 1
WN 4451 1-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2025-12-20 through 2026-01-03
Sat 18:55 Saint Louis (STL) 2 22:55 Fresno (FAT)
WN 4451 1-stop Boeing 737-700 (Scimitar Winglets) 6:00 Effective 2025-11-22 through 2025-11-29
Sat 18:55 Saint Louis (STL) 2 22:55 Fresno (FAT)
WN 4451 1-stop Boeing 737-700 (Scimitar Winglets) 6:00 Effective 2025-12-20 through 2026-01-03
Sat 16:25 New York LaGuardia (LGA) B 22:55 Fresno (FAT)
WN 4451 2-stop Boeing 737-700 (Scimitar Winglets) 9:30 Effective 2025-11-22 through 2025-11-29
Sat 16:25 New York LaGuardia (LGA) B 22:55 Fresno (FAT)
WN 4451 2-stop Boeing 737-700 (Scimitar Winglets) 9:30 Effective 2025-12-20 through 2026-01-03
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4451: Multiple routes
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Select flight date:  Show Calendar
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4451
07:15
Las Vegas Harry Reid (LAS) 1

08:45
San Jose (SJC) B
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4451
07:45
Las Vegas Harry Reid (LAS) 1

09:15
San Jose (SJC) B
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4451
07:45
Las Vegas Harry Reid (LAS) 1

09:15
San Jose (SJC) B
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4451
07:50
Las Vegas Harry Reid (LAS) 1

09:20
San Jose (SJC) B
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4451
14:00
Louisville (SDF)

15:25
Houston Hobby (HOU)
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4451
14:00
Louisville (SDF)

15:25
Houston Hobby (HOU)
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4451
14:15
Louisville (SDF)

15:40
Houston Hobby (HOU)
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4451
15:40
Louisville (SDF)

17:05
Houston Hobby (HOU)
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4451
16:25
New York LaGuardia (LGA) B

18:20
Saint Louis (STL) 2
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
16:25
New York LaGuardia (LGA) B

18:20
Saint Louis (STL) 2
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
17:10
Islip (ISP)

20:00
Orlando (MCO)
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4451
18:55
Islip (ISP)

21:45
Orlando (MCO)
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4451
18:55
Islip (ISP)

21:45
Orlando (MCO)
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4451
18:55
Saint Louis (STL) 2

20:55
San Diego (SAN) 1
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
18:55
Saint Louis (STL) 2

20:55
San Diego (SAN) 1
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
21:05
San Francisco (SFO) 2

05:15(+1)
Baltimore (BWI)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:10, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Southwest Airlines WN4451
21:05
San Francisco (SFO) 2

04:15(+1)
Baltimore (BWI)
Operates only on 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:10, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Southwest Airlines WN4451
21:35
San Diego (SAN) 1

22:55
Fresno (FAT)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
21:35
San Diego (SAN) 1

22:55
Fresno (FAT)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4451
16:25
New York LaGuardia (LGA) B

20:55
San Diego (SAN) 1
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:30, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
16:25
New York LaGuardia (LGA) B

20:55
San Diego (SAN) 1
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:30, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
18:55
Saint Louis (STL) 2

22:55
Fresno (FAT)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
18:55
Saint Louis (STL) 2

22:55
Fresno (FAT)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
16:25
New York LaGuardia (LGA) B

22:55
Fresno (FAT)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 9:30, 2-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4451
16:25
New York LaGuardia (LGA) B

22:55
Fresno (FAT)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 9:30, 2-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Islip (ISP) - Orlando (MCO)
  • Las Vegas Harry Reid (LAS) - San Jose (SJC)
  • Louisville (SDF) - Houston Hobby (HOU)
  • New York LaGuardia (LGA) - Fresno (FAT)
  • New York LaGuardia (LGA) - Saint Louis (STL)
  • New York LaGuardia (LGA) - San Diego (SAN)
  • Saint Louis (STL) - Fresno (FAT)
  • Saint Louis (STL) - San Diego (SAN)
  • San Diego (SAN) - Fresno (FAT)
  • San Francisco (SFO) - Baltimore (BWI)
All Southwest Airlines flights
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