Southwest Airlines flight WN 4251: Multiple routes

FLIGHT SCHEDULE
Direct Flights:
Sun 05:30 Tampa (TPA) 07:45 Baltimore (BWI) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-06-07 through 2026-08-02
Sat 06:10 Tampa (TPA) 08:30 Baltimore (BWI) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 07:20 Tampa (TPA) 09:45 Baltimore (BWI) WN 4251 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-06-04 through 2026-08-03
Wed,Thu 08:20 San Francisco (SFO) 2 11:50 Denver (DEN) WN 4251 Non-stop Boeing 737-700 (73W) 2:30 Valid until 2026-01-01
Mon,Thu,Fri 09:55 Denver (DEN) 13:00 Little Rock (LIT) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:05 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 09:55 Denver (DEN) 13:00 Little Rock (LIT) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:05 Effective 2026-02-20 through 2026-03-01
Thu,Fri,Sun 10:30 Denver (DEN) 13:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 10:30 Denver (DEN) 13:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 10:30 Denver (DEN) 13:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 10:30 Denver (DEN) 13:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 10:30 Denver (DEN) 13:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-17 through 2026-02-23
Mon 10:30 Denver (DEN) 13:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Operates only on 2026-03-02
Mon-Fri 10:40 Denver (DEN) 13:40 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 10:40 Denver (DEN) 13:40 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-01-18 through 2026-01-23
Mon-Fri 10:40 Denver (DEN) 13:40 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-01-26 through 2026-02-04
Sun 10:40 Denver (DEN) 13:40 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Operates only on 2026-02-08
Tue,Wed 10:45 Denver (DEN) 13:45 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-10 through 2026-02-11
Tue,Wed 10:45 Denver (DEN) 13:45 Little Rock (LIT) WN 4251 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-18 through 2026-03-04
Sat 11:25 Denver (DEN) 14:25 Little Rock (LIT) WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-14 through 2026-02-28
Sun 12:40 Boston Logan (BOS) B 15:00 Denver (DEN) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 4:20 Effective 2026-08-09 through 2026-09-27
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 Valid until 2026-01-03
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 Valid until 2026-01-04
Mon,Thu,Fri 16:55 Boston Logan (BOS) B 19:30 Denver (DEN) WN 4251 Non-stop Boeing 737-800 (73H) 4:35 Effective 2026-08-06 through 2026-09-28
Sat 17:30 Denver (DEN) 20:30 Little Rock (LIT) WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-01-10 through 2026-02-07
Tue,Wed 18:00 San Diego (SAN) 1 19:35 San Jose (SJC) B WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-03-10 through 2026-04-01
Sat 18:10 San Diego (SAN) 1 19:45 San Jose (SJC) B WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-03-07 through 2026-04-04
Mon,Thu,Fri 18:20 San Diego (SAN) 1 19:55 San Jose (SJC) B WN 4251 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-03-05 through 2026-04-06
Sun 21:05 San Diego (SAN) 1 22:35 San Jose (SJC) B WN 4251 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-03-08 through 2026-04-05

This flight number is listed as serving the following routes:

Boston Logan (BOS) - Denver (DEN)
Denver (DEN) - Little Rock (LIT)
San Diego (SAN) - San Jose (SJC)
San Francisco (SFO) - Denver (DEN)
Tampa (TPA) - Baltimore (BWI)

All Southwest Airlines flights

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Southwest Airlines flight WN 4251: Multiple routes

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4251

05:30

Tampa (TPA)

07:45

Baltimore (BWI)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4251

06:10

Tampa (TPA)

08:30

Baltimore (BWI)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

07:20

Tampa (TPA)

09:45

Baltimore (BWI)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN4251

08:20

San Francisco (SFO) 2

11:50

Denver (DEN)

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-700 (73W)

Direct Flights:

Southwest Airlines WN4251

09:55

Denver (DEN)

13:00

Little Rock (LIT)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

09:55

Denver (DEN)

13:00

Little Rock (LIT)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

10:30

Denver (DEN)

13:30

Little Rock (LIT)

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:30

Denver (DEN)

13:30

Little Rock (LIT)

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:30

Denver (DEN)

13:30

Little Rock (LIT)

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:30

Denver (DEN)

13:30

Little Rock (LIT)

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:30

Denver (DEN)

13:30

Little Rock (LIT)

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:30

Denver (DEN)

13:30

Little Rock (LIT)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:40

Denver (DEN)

13:40

Little Rock (LIT)

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:40

Denver (DEN)

13:40

Little Rock (LIT)

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:40

Denver (DEN)

13:40

Little Rock (LIT)

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:40

Denver (DEN)

13:40

Little Rock (LIT)

Operates only on 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:45

Denver (DEN)

13:45

Little Rock (LIT)

Effective 2026-02-10 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

10:45

Denver (DEN)

13:45

Little Rock (LIT)

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

11:25

Denver (DEN)

14:25

Little Rock (LIT)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

12:40

Boston Logan (BOS) B

15:00

Denver (DEN)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

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)

Direct Flights:

Southwest Airlines WN4251

16:35

San Francisco (SFO) 2

20:00

Denver (DEN)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN4251

16:40

San Francisco (SFO) 2

20:05

Denver (DEN)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN4251

16:55

Boston Logan (BOS) B

19:30

Denver (DEN)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4251

17:30

Denver (DEN)

20:30

Little Rock (LIT)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4251

18:00

San Diego (SAN) 1

19:35

San Jose (SJC) B

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

18:10

San Diego (SAN) 1

19:45

San Jose (SJC) B

Effective 2026-03-07 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

18:20

San Diego (SAN) 1

19:55

San Jose (SJC) B

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4251

21:05

San Diego (SAN) 1

22:35

San Jose (SJC) B

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

This flight number is listed as serving the following routes:

Boston Logan (BOS) - Denver (DEN)
Denver (DEN) - Little Rock (LIT)
San Diego (SAN) - San Jose (SJC)
San Francisco (SFO) - Denver (DEN)
Tampa (TPA) - Baltimore (BWI)

All Southwest Airlines flights

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