Southwest Airlines flight WN 4555: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:00 Portland (PDX) 08:30 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 05:00 Portland (PDX) 08:30 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2026-02-20 through 2026-03-01
Sat 05:10 Portland (PDX) 08:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-02-14 through 2026-02-28
Mon,Thu,Fri 05:30 San Antonio (SAT) A 06:35 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-06-04 through 2026-08-03
Sun 05:40 San Antonio (SAT) A 06:45 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-06-07 through 2026-08-02
Sat 05:50 San Antonio (SAT) A 06:55 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 1:05 Effective 2026-06-06 through 2026-08-01
Tue,Wed 06:10 San Antonio (SAT) A 07:15 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Effective 2026-06-09 through 2026-07-29
Thu,Fri,Sun 06:15 Portland (PDX) 09:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-01-11 through 2026-01-16
Mon,Sun 06:15 Portland (PDX) 09:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 06:15 Portland (PDX) 09:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-02-01 through 2026-02-06
Mon,Sun 06:15 Portland (PDX) 09:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 06:15 Portland (PDX) 09:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-02-17 through 2026-02-23
Mon 06:15 Portland (PDX) 09:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Operates only on 2026-03-02
Sat 06:40 Sacramento (SMF) B 08:10 Las Vegas Harry Reid (LAS) 1
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-08 through 2026-09-26
Sun 07:05 West Palm Beach (PBI) 09:40 Islip (ISP)
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Effective 2026-08-09 through 2026-09-27
Sat 07:10 Portland (PDX) 10:45 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-01-10 through 2026-02-07
Tue,Wed 07:15 Sacramento (SMF) B 08:45 Las Vegas Harry Reid (LAS) 1
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-04 through 2026-09-30
Tue,Wed 08:05 Houston Hobby (HOU) 12:05 Ronald Reagan Washington (DCA) 1
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 08:30 Saint Louis (STL) 2 10:55 San Francisco (SFO) 2
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 4:25 Effective 2026-03-05 through 2026-04-06
Tue,Wed 08:40 Saint Louis (STL) 2 11:05 San Francisco (SFO) 2
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 4:25 Effective 2026-03-10 through 2026-04-01
Tue,Wed 09:25 Las Vegas Harry Reid (LAS) 1 17:05 Ronald Reagan Washington (DCA) 1
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 4:40 Effective 2026-08-04 through 2026-09-30
Mon-Fri 11:30 Portland (PDX) 15:00 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 11:30 Portland (PDX) 15:00 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-01-18 through 2026-01-23
Mon-Fri 11:30 Portland (PDX) 15:00 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 11:30 Portland (PDX) 15:00 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-02-08 through 2026-02-11
Tue,Wed 11:30 Portland (PDX) 15:00 Phoenix Sky Harbor (PHX) 4
WN 4555 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-02-18 through 2026-03-04
Sun 12:30 Saint Louis (STL) 2 14:55 San Francisco (SFO) 2
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 4:25 Effective 2026-03-08 through 2026-04-05
Wed,Thu 13:00 Indianapolis (IND) 14:40 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Valid until 2026-01-01
Mon,Tue,Fri,Sun 13:40 Nashville (BNA) 15:55 Indianapolis (IND)
WN 4555 Non-stop Boeing 737-800 (73H) 1:15 Valid until 2026-01-04
Sat 15:10 Denver (DEN) 18:30 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737-800 (73H) 2:20 Valid until 2026-01-03
Mon 15:20 Nashville (BNA) 17:30 Indianapolis (IND)
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Operates only on 2026-01-05
Mon,Thu,Fri 16:55 Sacramento (SMF) B 18:20 Las Vegas Harry Reid (LAS) 1
WN 4555 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-08-06 through 2026-09-28
Mon 18:05 Indianapolis (IND) 19:45 Houston Hobby (HOU)
WN 4555 Non-stop Boeing 737-700 (Scimitar Winglets) 2:40 Operates only on 2026-01-05
Non-Direct Flights:
Tue,Wed 06:10 San Antonio (SAT) A 12:05 Ronald Reagan Washington (DCA) 1
WN 4555 1-stop Boeing 737-700 (Scimitar Winglets) 4:55 Effective 2026-06-09 through 2026-07-29
Tue,Wed 07:15 Sacramento (SMF) B 17:05 Ronald Reagan Washington (DCA) 1
WN 4555 1-stop Boeing 737 MAX 8 (7M8) 6:50 Effective 2026-08-04 through 2026-09-30
Mon 15:20 Nashville (BNA) 19:45 Houston Hobby (HOU)
WN 4555 1-stop Boeing 737-700 (Scimitar Winglets) 4:25 Operates only on 2026-01-05
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4555: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4555
05:00
Portland (PDX)

08:30
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
05:00
Portland (PDX)

08:30
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
05:10
Portland (PDX)

08:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
05:30
San Antonio (SAT) A

06:35
Houston Hobby (HOU)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
05:40
San Antonio (SAT) A

06:45
Houston Hobby (HOU)
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
05:50
San Antonio (SAT) A

06:55
Houston Hobby (HOU)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:10
San Antonio (SAT) A

07:15
Houston Hobby (HOU)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
06:15
Portland (PDX)

09:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:15
Portland (PDX)

09:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:15
Portland (PDX)

09:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:15
Portland (PDX)

09:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:15
Portland (PDX)

09:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:15
Portland (PDX)

09:45
Phoenix Sky Harbor (PHX) 4
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
06:40
Sacramento (SMF) B

08:10
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
07:05
West Palm Beach (PBI)

09:40
Islip (ISP)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
07:10
Portland (PDX)

10:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
07:15
Sacramento (SMF) B

08:45
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
08:05
Houston Hobby (HOU)

12:05
Ronald Reagan Washington (DCA) 1
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
08:30
Saint Louis (STL) 2

10:55
San Francisco (SFO) 2
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
08:40
Saint Louis (STL) 2

11:05
San Francisco (SFO) 2
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
09:25
Las Vegas Harry Reid (LAS) 1

17:05
Ronald Reagan Washington (DCA) 1
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
11:30
Portland (PDX)

15:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
11:30
Portland (PDX)

15:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
11:30
Portland (PDX)

15:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
11:30
Portland (PDX)

15:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-08 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
11:30
Portland (PDX)

15:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
12:30
Saint Louis (STL) 2

14:55
San Francisco (SFO) 2
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
13:00
Indianapolis (IND)

14:40
Houston Hobby (HOU)
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
13:40
Nashville (BNA)

15:55
Indianapolis (IND)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
15:10
Denver (DEN)

18:30
Houston Hobby (HOU)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4555
15:20
Nashville (BNA)

17:30
Indianapolis (IND)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4555
16:55
Sacramento (SMF) B

18:20
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4555
18:05
Indianapolis (IND)

19:45
Houston Hobby (HOU)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4555
06:10
San Antonio (SAT) A

12:05
Ronald Reagan Washington (DCA) 1
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4555
07:15
Sacramento (SMF) B

17:05
Ronald Reagan Washington (DCA) 1
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:50, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4555
15:20
Nashville (BNA)

19:45
Houston Hobby (HOU)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Denver (DEN) - Houston Hobby (HOU)
  • Houston Hobby (HOU) - Ronald Reagan Washington (DCA)
  • Indianapolis (IND) - Houston Hobby (HOU)
  • Las Vegas Harry Reid (LAS) - Ronald Reagan Washington (DCA)
  • Nashville (BNA) - Houston Hobby (HOU)
  • Nashville (BNA) - Indianapolis (IND)
  • Portland (PDX) - Phoenix Sky Harbor (PHX)
  • Sacramento (SMF) - Las Vegas Harry Reid (LAS)
  • Sacramento (SMF) - Ronald Reagan Washington (DCA)
  • Saint Louis (STL) - San Francisco (SFO)
  • San Antonio (SAT) - Houston Hobby (HOU)
  • San Antonio (SAT) - Ronald Reagan Washington (DCA)
  • West Palm Beach (PBI) - Islip (ISP)
All Southwest Airlines flights
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