Southwest Airlines flight WN 4251: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 08:20 San Francisco (SFO) 2 11:50 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2025-11-04 through 2025-11-12
Mon-Thu 08:20 San Francisco (SFO) 2 11:50 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2025-11-17 through 2025-11-20
Mon-Fri 08:20 San Francisco (SFO) 2 11:50 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2025-12-02 through 2025-12-11
Mon-Wed 08:20 San Francisco (SFO) 2 11:50 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2025-12-15 through 2025-12-17
Wed,Thu 08:20 San Francisco (SFO) 2 11:50 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2025-12-24 through 2026-01-01
Sun 09:45 Love Field, Dallas (DAL) 1 11:25 Pensacola (PNS) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2025-06-08 through 2025-08-03
Sat 10:30 Seattle-Tacoma (SEA) 16:35 Love Field, Dallas (DAL) 1 WN 4251 Non-stop Boeing 737-800 (73H) 4:05 Effective 2025-08-09 through 2025-09-27
Sun 11:25 Seattle-Tacoma (SEA) 17:30 Love Field, Dallas (DAL) 1 WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2025-08-10 through 2025-08-24
Sun 11:25 Seattle-Tacoma (SEA) 17:30 Love Field, Dallas (DAL) 1 WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2025-09-07 through 2025-09-28
Tue,Wed 12:30 Seattle-Tacoma (SEA) 18:35 Love Field, Dallas (DAL) 1 WN 4251 Non-stop Boeing 737-800 (73H) 4:05 Effective 2025-08-05 through 2025-10-01
Mon,Thu,Fri 13:45 Seattle-Tacoma (SEA) 19:50 Love Field, Dallas (DAL) 1 WN 4251 Non-stop Boeing 737-700 (73W) 4:05 Effective 2025-08-07 through 2025-09-29
Sun 15:35 San Francisco (SFO) 2 19:00 Denver (DEN) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Operates only on 2025-11-30
Mon,Thu,Fri,Sun 15:55 San Francisco (SFO) 2 19:20 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 15:55 San Francisco (SFO) 2 19:20 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2025-11-21 through 2025-11-28
Fri,Sun 15:55 San Francisco (SFO) 2 19:20 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2025-12-07 through 2025-12-14
Thu 15:55 San Francisco (SFO) 2 19:20 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2025-12-18
Mon 15:55 San Francisco (SFO) 2 19:20 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2026-01-05
Sat 16:35 San Francisco (SFO) 2 20:00 Denver (DEN) WN 4251 Non-stop Boeing 737-800 (73H) 2:25 Effective 2025-11-22 through 2025-11-29
Sat 16:35 San Francisco (SFO) 2 20:00 Denver (DEN) WN 4251 Non-stop Boeing 737-800 (73H) 2:25 Effective 2025-12-20 through 2026-01-03
Mon-Wed 16:40 San Francisco (SFO) 2 20:05 Denver (DEN) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 16:40 San Francisco (SFO) 2 20:05 Denver (DEN) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2025-12-19 through 2026-01-04

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Parallax here -

This flight number is listed as serving the following routes:

Love Field, Dallas (DAL) - Pensacola (PNS)
San Francisco (SFO) - Denver (DEN)
Seattle-Tacoma (SEA) - Love Field, Dallas (DAL)

All Southwest Airlines flights

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Southwest Airlines flight WN 4251: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4251

08:20

San Francisco (SFO) 2

11:50

Denver (DEN)

Effective 2025-11-04 through 2025-11-12

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

08:20

San Francisco (SFO) 2

11:50

Denver (DEN)

Effective 2025-11-17 through 2025-11-20

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

08:20

San Francisco (SFO) 2

11:50

Denver (DEN)

Effective 2025-12-02 through 2025-12-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

08:20

San Francisco (SFO) 2

11:50

Denver (DEN)

Effective 2025-12-15 through 2025-12-17

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

08:20

San Francisco (SFO) 2

11:50

Denver (DEN)

Effective 2025-12-24 through 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

09:45

Love Field, Dallas (DAL) 1

11:25

Pensacola (PNS)

Effective 2025-06-08 through 2025-08-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN4251

10:30

Seattle-Tacoma (SEA)

16:35

Love Field, Dallas (DAL) 1

Effective 2025-08-09 through 2025-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN4251

11:25

Seattle-Tacoma (SEA)

17:30

Love Field, Dallas (DAL) 1

Effective 2025-08-10 through 2025-08-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN4251

11:25

Seattle-Tacoma (SEA)

17:30

Love Field, Dallas (DAL) 1

Effective 2025-09-07 through 2025-09-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN4251

12:30

Seattle-Tacoma (SEA)

18:35

Love Field, Dallas (DAL) 1

Effective 2025-08-05 through 2025-10-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN4251

13:45

Seattle-Tacoma (SEA)

19:50

Love Field, Dallas (DAL) 1

Effective 2025-08-07 through 2025-09-29

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN4251

15:35

San Francisco (SFO) 2

19:00

Denver (DEN)

Operates only on 2025-11-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN4251

15:55

San Francisco (SFO) 2

19:20

Denver (DEN)

Effective 2025-11-02 through 2025-11-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

15:55

San Francisco (SFO) 2

19:20

Denver (DEN)

Effective 2025-11-21 through 2025-11-28

Mon

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

15:55

San Francisco (SFO) 2

19:20

Denver (DEN)

Effective 2025-12-07 through 2025-12-14

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

15:55

San Francisco (SFO) 2

19:20

Denver (DEN)

Operates only on 2025-12-18

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

15:55

San Francisco (SFO) 2

19:20

Denver (DEN)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN4251

16:35

San Francisco (SFO) 2

20:00

Denver (DEN)

Effective 2025-11-22 through 2025-11-29

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:25, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN4251

16:35

San Francisco (SFO) 2

20:00

Denver (DEN)

Effective 2025-12-20 through 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:25, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN4251

16:40

San Francisco (SFO) 2

20:05

Denver (DEN)

Effective 2025-11-25 through 2025-12-01

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN4251

16:40

San Francisco (SFO) 2

20:05

Denver (DEN)

Effective 2025-12-19 through 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

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Parallax here -

This flight number is listed as serving the following routes:

Love Field, Dallas (DAL) - Pensacola (PNS)
San Francisco (SFO) - Denver (DEN)
Seattle-Tacoma (SEA) - Love Field, Dallas (DAL)

All Southwest Airlines flights

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