Southwest Airlines flight WN 3551: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Mon,Thu-Sun 08:00 Denver (DEN) 11:10 Austin (AUS) WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2025-08-07 through 2025-08-30
Mon,Thu-Sun 08:00 Denver (DEN) 11:10 Austin (AUS) WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2025-09-01 through 2025-09-29
Mon,Thu,Fri,Sun 08:00 Saint Louis (STL) 2 10:40 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 08:00 Saint Louis (STL) 2 10:40 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2025-11-21 through 2025-11-28
Fri,Sun 08:00 Saint Louis (STL) 2 10:40 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2025-12-07 through 2025-12-14
Thu 08:00 Saint Louis (STL) 2 10:40 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2025-12-18
Mon 08:00 Saint Louis (STL) 2 10:40 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2026-01-05
Sun 08:05 Tampa (TPA) 09:35 Saint Louis (STL) 2 WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Operates only on 2025-11-30
Sun 08:15 Denver (DEN) 11:25 Austin (AUS) WN 3551 Non-stop Boeing 737-800 (73H) 2:10 Operates only on 2025-08-31
Sat 08:25 Saint Louis (STL) 2 11:00 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-11-08 through 2025-11-15
Sat 08:25 Saint Louis (STL) 2 11:00 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-12-06 through 2025-12-13
Tue,Wed 09:00 Austin (AUS) 12:15 Atlanta (ATL) N WN 3551 Non-stop Boeing 737-700 (73W) 2:15 Valid until 2025-06-04
Sun 10:10 Saint Louis (STL) 2 12:45 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Operates only on 2025-11-30
Sat 11:15 Albuquerque (ABQ) 14:10 Kansas City (MCI) WN 3551 Non-stop Boeing 737-700 (73W) 1:55 Effective 2025-06-07 through 2025-08-02
Sun 11:30 Austin (AUS) 14:40 Atlanta (ATL) N WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Valid until 2025-05-18
Sun 11:30 Austin (AUS) 14:40 Atlanta (ATL) N WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Operates only on 2025-06-01
Sat 11:35 Austin (AUS) 14:45 Atlanta (ATL) N WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Valid until 2025-05-03
Sat 11:35 Austin (AUS) 14:45 Atlanta (ATL) N WN 3551 Non-stop Boeing 737-700 (73W) 2:10 Effective 2025-05-10 through 2025-05-31
Tue,Wed 13:50 Albuquerque (ABQ) 16:45 Kansas City (MCI) WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2025-06-10 through 2025-07-30
Sat 15:35 Ronald Reagan Washington (DCA) 18:00 Oklahoma City (OKC) WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2025-11-22 through 2025-11-29
Sat 15:35 Ronald Reagan Washington (DCA) 18:00 Oklahoma City (OKC) WN 3551 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2025-12-20 through 2026-01-03
Sun 15:55 Albuquerque (ABQ) 18:50 Kansas City (MCI) WN 3551 Non-stop Boeing 737-700 (73W) 1:55 Effective 2025-06-08 through 2025-08-03
Sun 17:30 Austin (AUS) 20:45 Atlanta (ATL) N WN 3551 Non-stop Boeing 737-700 (73W) 2:15 Operates only on 2025-05-25
Tue,Wed 18:15 Saint Louis (STL) 2 20:50 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-11-04 through 2025-11-12
Mon-Thu 18:15 Saint Louis (STL) 2 20:50 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-11-17 through 2025-11-20
Mon-Fri 18:15 Saint Louis (STL) 2 20:50 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-12-02 through 2025-12-11
Mon-Wed 18:15 Saint Louis (STL) 2 20:50 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-12-15 through 2025-12-17
Wed,Thu 18:15 Saint Louis (STL) 2 20:50 Pittsburgh (PIT) WN 3551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-12-24 through 2026-01-01
Non-Direct Flights:
Sun 08:05 Tampa (TPA) 12:45 Pittsburgh (PIT) WN 3551 1-stop Boeing 737-700 (Scimitar Winglets) 4:40 Operates only on 2025-11-30

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This flight number is listed as serving the following routes:

Albuquerque (ABQ) - Kansas City (MCI)
Austin (AUS) - Atlanta (ATL)
Denver (DEN) - Austin (AUS)
Ronald Reagan Washington (DCA) - Oklahoma City (OKC)
Saint Louis (STL) - Pittsburgh (PIT)
Tampa (TPA) - Pittsburgh (PIT)
Tampa (TPA) - Saint Louis (STL)

All Southwest Airlines flights

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Southwest Airlines flight WN 3551: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3551

08:00

Denver (DEN)

11:10

Austin (AUS)

Effective 2025-08-07 through 2025-08-30

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

08:00

Denver (DEN)

11:10

Austin (AUS)

Effective 2025-09-01 through 2025-09-29

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

08:00

Saint Louis (STL) 2

10:40

Pittsburgh (PIT)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3551

08:00

Saint Louis (STL) 2

10:40

Pittsburgh (PIT)

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

Mon

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3551

08:00

Saint Louis (STL) 2

10:40

Pittsburgh (PIT)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3551

08:00

Saint Louis (STL) 2

10:40

Pittsburgh (PIT)

Operates only on 2025-12-18

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3551

08:00

Saint Louis (STL) 2

10:40

Pittsburgh (PIT)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN3551

08:05

Tampa (TPA)

09:35

Saint Louis (STL) 2

Operates only on 2025-11-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Southwest Airlines WN3551

08:15

Denver (DEN)

11:25

Austin (AUS)

Operates only on 2025-08-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3551

08:25

Saint Louis (STL) 2

11:00

Pittsburgh (PIT)

Effective 2025-11-08 through 2025-11-15

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Southwest Airlines WN3551

08:25

Saint Louis (STL) 2

11:00

Pittsburgh (PIT)

Effective 2025-12-06 through 2025-12-13

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Southwest Airlines WN3551

09:00

Austin (AUS)

12:15

Atlanta (ATL) N

Valid until 2025-06-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3551

10:10

Saint Louis (STL) 2

12:45

Pittsburgh (PIT)

Operates only on 2025-11-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Southwest Airlines WN3551

11:15

Albuquerque (ABQ)

14:10

Kansas City (MCI)

Effective 2025-06-07 through 2025-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:55, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3551

11:30

Austin (AUS)

14:40

Atlanta (ATL) N

Valid until 2025-05-18

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

11:30

Austin (AUS)

14:40

Atlanta (ATL) N

Operates only on 2025-06-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

11:35

Austin (AUS)

14:45

Atlanta (ATL) N

Valid until 2025-05-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

11:35

Austin (AUS)

14:45

Atlanta (ATL) N

Effective 2025-05-10 through 2025-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:10, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3551

13:50

Albuquerque (ABQ)

16:45

Kansas City (MCI)

Effective 2025-06-10 through 2025-07-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

15:35

Ronald Reagan Washington (DCA)

18:00

Oklahoma City (OKC)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

15:35

Ronald Reagan Washington (DCA)

18:00

Oklahoma City (OKC)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3551

15:55

Albuquerque (ABQ)

18:50

Kansas City (MCI)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3551

17:30

Austin (AUS)

20:45

Atlanta (ATL) N

Operates only on 2025-05-25

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3551

18:15

Saint Louis (STL) 2

20:50

Pittsburgh (PIT)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3551

18:15

Saint Louis (STL) 2

20:50

Pittsburgh (PIT)

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

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3551

18:15

Saint Louis (STL) 2

20:50

Pittsburgh (PIT)

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

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

Southwest Airlines WN3551

18:15

Saint Louis (STL) 2

20:50

Pittsburgh (PIT)

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

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3551

18:15

Saint Louis (STL) 2

20:50

Pittsburgh (PIT)

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

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

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

Non-Direct Flights:

Southwest Airlines WN3551

08:05

Tampa (TPA)

12:45

Pittsburgh (PIT)

Operates only on 2025-11-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:40, 1-stop
Boeing 737-700 (Scimitar Winglets)

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Parallax here

This flight number is listed as serving the following routes:

Albuquerque (ABQ) - Kansas City (MCI)
Austin (AUS) - Atlanta (ATL)
Denver (DEN) - Austin (AUS)
Ronald Reagan Washington (DCA) - Oklahoma City (OKC)
Saint Louis (STL) - Pittsburgh (PIT)
Tampa (TPA) - Pittsburgh (PIT)
Tampa (TPA) - Saint Louis (STL)

All Southwest Airlines flights

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