Southwest Airlines flight WN 551: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 08:00 Austin (AUS) 09:15 Denver (DEN)
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-08-07 through 2025-09-29
Thu 10:55 Love Field, Dallas (DAL) 1 11:55 Las Vegas Harry Reid (LAS) 1
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Operates only on 2025-11-27
Mon,Thu,Fri 11:00 Love Field, Dallas (DAL) 1 11:30 Phoenix Sky Harbor (PHX) 4
WN 551 Non-stop Boeing 737-800 (73H) 2:30 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 11:00 Love Field, Dallas (DAL) 1 11:30 Phoenix Sky Harbor (PHX) 4
WN 551 Non-stop Boeing 737-800 (73H) 2:30 Effective 2025-07-07 through 2025-08-04
Sat 11:10 San Jose (SJC) B 13:10 Spokane (GEG)
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2025-08-09 through 2025-09-27
Sun 11:10 Love Field, Dallas (DAL) 1 12:15 San Diego (SAN) 1
WN 551 Non-stop Boeing 737-800 (73H) 3:05 Effective 2025-08-10 through 2025-08-24
Sun 11:10 Love Field, Dallas (DAL) 1 12:15 San Diego (SAN) 1
WN 551 Non-stop Boeing 737-800 (73H) 3:05 Effective 2025-09-07 through 2025-09-28
Fri 11:25 Love Field, Dallas (DAL) 1 11:55 Phoenix Sky Harbor (PHX) 4
WN 551 Non-stop Boeing 737-700 (73W) 2:30 Operates only on 2025-07-04
Fri 12:35 Phoenix Sky Harbor (PHX) 4 13:55 Burbank (BUR)
WN 551 Non-stop Boeing 737-700 (73W) 1:20 Operates only on 2025-07-04
Tue,Wed 12:40 Austin (AUS) 13:55 Denver (DEN)
WN 551 Non-stop Boeing 737-800 (73H) 2:15 Effective 2025-08-05 through 2025-10-01
Sun 13:10 Houston Hobby (HOU) 14:20 Las Vegas Harry Reid (LAS) 1
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2025-10-05 through 2025-10-26
Tue,Wed 13:15 Saint Louis (STL) 2 15:45 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-11-04 through 2025-11-12
Mon-Thu 13:15 Saint Louis (STL) 2 15:45 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-11-17 through 2025-11-20
Mon-Fri 13:15 Saint Louis (STL) 2 15:45 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-12-02 through 2025-12-11
Mon-Wed 13:15 Saint Louis (STL) 2 15:45 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-12-15 through 2025-12-17
Wed,Thu 13:15 Saint Louis (STL) 2 15:45 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-12-24 through 2026-01-01
Sat 13:45 Houston Hobby (HOU) 14:55 Las Vegas Harry Reid (LAS) 1
WN 551 Non-stop Boeing 737-800 (73H) 3:10 Effective 2025-10-04 through 2025-11-01
Sat 13:55 San Francisco (SFO) 2 15:25 Los Angeles (LAX) 1
WN 551 Non-stop Boeing 737-700 (73W) 1:30 Valid until 2025-05-31
Mon,Thu,Fri 14:45 Houston Hobby (HOU) 15:55 Las Vegas Harry Reid (LAS) 1
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2025-10-02 through 2025-10-31
Sat 15:00 Austin (AUS) 16:50 Panama City (ECP)
WN 551 Non-stop Boeing 737-800 (73H) 1:50 Effective 2025-11-22 through 2025-11-29
Sat 15:00 Austin (AUS) 16:50 Panama City (ECP)
WN 551 Non-stop Boeing 737-800 (73H) 1:50 Effective 2025-12-20 through 2026-01-03
Mon-Wed 15:30 Austin (AUS) 17:20 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 15:30 Austin (AUS) 17:20 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-19 through 2026-01-04
Mon,Thu,Fri,Sun 15:45 Austin (AUS) 17:35 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 15:45 Austin (AUS) 17:35 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-21 through 2025-11-28
Fri,Sun 15:45 Austin (AUS) 17:35 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-07 through 2025-12-14
Thu 15:45 Austin (AUS) 17:35 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Operates only on 2025-12-18
Mon 15:45 Austin (AUS) 17:35 Panama City (ECP)
WN 551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Operates only on 2026-01-05
Sat 17:50 Saint Louis (STL) 2 20:25 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:35 Effective 2025-11-08 through 2025-11-15
Sat 17:50 Saint Louis (STL) 2 20:25 Atlanta (ATL) N
WN 551 Non-stop Boeing 737-800 (73H) 1:35 Effective 2025-12-06 through 2025-12-13
Sun 18:05 Atlanta (ATL) N 19:15 Houston Hobby (HOU)
WN 551 Non-stop Boeing 737-800 (73H) 2:10 Operates only on 2025-08-31
Tue,Wed 18:50 Orlando (MCO) 20:50 Las Vegas Harry Reid (LAS) 1
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 5:00 Effective 2025-06-10 through 2025-07-30
Mon,Thu,Fri 19:25 Denver (DEN) 21:00 Salt Lake City (SLC)
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Valid until 2025-06-02
Sun 20:55 Las Vegas Harry Reid (LAS) 1 22:00 Ontario, Los Angeles (ONT) 4
WN 551 Non-stop Boeing 737-800 (73H) 1:05 Operates only on 2025-05-25
Tue,Wed 21:15 Houston Hobby (HOU) 22:25 Las Vegas Harry Reid (LAS) 1
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2025-10-07 through 2025-10-29
Tue,Wed 21:30 Denver (DEN) 23:00 Salt Lake City (SLC)
WN 551 Non-stop Boeing 737-800 (73H) 1:30 Valid until 2025-06-04
Sat 21:40 Las Vegas Harry Reid (LAS) 1 22:40 Ontario, Los Angeles (ONT) 4
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 1:00 Effective 2025-06-07 through 2025-08-02
Tue,Wed 21:50 Las Vegas Harry Reid (LAS) 1 22:50 Ontario, Los Angeles (ONT) 4
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 1:00 Effective 2025-06-10 through 2025-07-30
Sun 22:45 Las Vegas Harry Reid (LAS) 1 23:45 Ontario, Los Angeles (ONT) 4
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 1:00 Valid until 2025-05-18
Sun 22:45 Las Vegas Harry Reid (LAS) 1 23:45 Ontario, Los Angeles (ONT) 4
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 1:00 Operates only on 2025-06-01
Sun 23:00 Las Vegas Harry Reid (LAS) 1 00:05 Ontario, Los Angeles (ONT) 4
WN 551 Non-stop Boeing 737 MAX 8 (7M8) 1:05 Effective 2025-06-08 through 2025-08-03
The flight arrives 1 day after departure.
Non-Direct Flights:
Fri 11:25 Love Field, Dallas (DAL) 1 13:55 Burbank (BUR)
WN 551 1-stop Boeing 737-700 (73W) 4:30 Operates only on 2025-07-04
Tue,Wed 18:50 Orlando (MCO) 22:50 Ontario, Los Angeles (ONT) 4
WN 551 1-stop Boeing 737 MAX 8 (7M8) 7:00 Effective 2025-06-10 through 2025-07-30
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This flight number is listed as serving the following routes:
Southwest Airlines flight WN 551: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:

Southwest Airlines WN551
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Operates only on 2025-11-27
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN551
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN551
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN551
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:50, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:50, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)

Southwest Airlines WN551
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:35, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:35, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN551
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN551
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN551
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:30, 1-stop
Boeing 737-700 (73W)

Southwest Airlines WN551
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 7:00, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Houston Hobby (HOU)
  • Austin (AUS) - Denver (DEN)
  • Austin (AUS) - Panama City (ECP)
  • Denver (DEN) - Salt Lake City (SLC)
  • Houston Hobby (HOU) - Las Vegas Harry Reid (LAS)
  • Las Vegas Harry Reid (LAS) - Ontario, Los Angeles (ONT)
  • Love Field, Dallas (DAL) - Burbank (BUR)
  • Love Field, Dallas (DAL) - Las Vegas Harry Reid (LAS)
  • Love Field, Dallas (DAL) - Phoenix Sky Harbor (PHX)
  • Love Field, Dallas (DAL) - San Diego (SAN)
  • Orlando (MCO) - Las Vegas Harry Reid (LAS)
  • Orlando (MCO) - Ontario, Los Angeles (ONT)
  • Phoenix Sky Harbor (PHX) - Burbank (BUR)
  • Saint Louis (STL) - Atlanta (ATL)
  • San Francisco (SFO) - Los Angeles (LAX)
  • San Jose (SJC) - Spokane (GEG)