Southwest Airlines flight WN 4551: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 07:45 Chicago Midway (MDW) 10:45 Tucson (TUS)
WN 4551 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 07:45 Chicago Midway (MDW) 10:45 Tucson (TUS)
WN 4551 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-02-20 through 2026-03-01
Thu,Fri,Sun 07:55 Chicago Midway (MDW) 10:55 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 07:55 Chicago Midway (MDW) 10:55 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 07:55 Chicago Midway (MDW) 10:55 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 07:55 Chicago Midway (MDW) 10:55 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 07:55 Chicago Midway (MDW) 10:55 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Effective 2026-02-17 through 2026-02-23
Mon 07:55 Chicago Midway (MDW) 10:55 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Operates only on 2026-03-02
Sun 08:00 San Jose (SJC) B 10:50 Salt Lake City (SLC)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Operates only on 2026-05-24
Mon-Fri 08:15 Chicago Midway (MDW) 11:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 08:15 Chicago Midway (MDW) 11:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-18 through 2026-01-23
Mon-Fri 08:15 Chicago Midway (MDW) 11:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-26 through 2026-02-04
Sun 08:15 Chicago Midway (MDW) 11:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 4:00 Operates only on 2026-02-08
Tue,Wed 08:15 Chicago Midway (MDW) 11:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-10 through 2026-02-11
Tue,Wed 08:15 Chicago Midway (MDW) 11:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-18 through 2026-03-04
Sat 09:20 Chicago Midway (MDW) 12:15 Tucson (TUS)
WN 4551 Non-stop Boeing 737-800 (73H) 3:55 Effective 2026-02-14 through 2026-02-28
Mon,Thu,Fri,Sun 09:50 Tampa (TPA) 12:10 Ronald Reagan Washington (DCA) 1
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-04-09 through 2026-05-22
Mon,Thu,Fri,Sun 09:50 Tampa (TPA) 12:10 Ronald Reagan Washington (DCA) 1
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-05-25 through 2026-06-01
Tue,Wed 09:55 Tampa (TPA) 12:15 Ronald Reagan Washington (DCA) 1
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-04-07 through 2026-06-03
Sat 10:05 Tampa (TPA) 12:25 Ronald Reagan Washington (DCA) 1
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-04-11 through 2026-05-30
Sun 10:20 Memphis (MEM) 11:40 Dallas Love Field (DAL) 1
WN 4551 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-08-09 through 2026-09-27
Mon,Tue,Fri,Sun 12:05 Pensacola (PNS) 13:50 Houston Hobby (HOU)
WN 4551 Non-stop Boeing 737-800 (73H) 1:45 Valid until 2026-01-04
Mon,Thu,Fri 18:45 Phoenix Sky Harbor (PHX) 4 21:00 El Paso (ELP)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-06-04 through 2026-08-03
Sat 19:30 Chicago Midway (MDW) 22:25 Tucson (TUS)
WN 4551 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Effective 2026-01-10 through 2026-02-07
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4551: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4551
07:45
Chicago Midway (MDW)

10:45
Tucson (TUS)
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4551
07:45
Chicago Midway (MDW)

10:45
Tucson (TUS)
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4551
07:55
Chicago Midway (MDW)

10:55
Tucson (TUS)
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
07:55
Chicago Midway (MDW)

10:55
Tucson (TUS)
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
07:55
Chicago Midway (MDW)

10:55
Tucson (TUS)
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
07:55
Chicago Midway (MDW)

10:55
Tucson (TUS)
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
07:55
Chicago Midway (MDW)

10:55
Tucson (TUS)
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
07:55
Chicago Midway (MDW)

10:55
Tucson (TUS)
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
08:00
San Jose (SJC) B

10:50
Salt Lake City (SLC)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
08:15
Chicago Midway (MDW)

11:15
Tucson (TUS)
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4551
08:15
Chicago Midway (MDW)

11:15
Tucson (TUS)
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4551
08:15
Chicago Midway (MDW)

11:15
Tucson (TUS)
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4551
08:15
Chicago Midway (MDW)

11:15
Tucson (TUS)
Operates only on 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
08:15
Chicago Midway (MDW)

11:15
Tucson (TUS)
Effective 2026-02-10 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4551
08:15
Chicago Midway (MDW)

11:15
Tucson (TUS)
Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4551
09:20
Chicago Midway (MDW)

12:15
Tucson (TUS)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4551
09:50
Tampa (TPA)

12:10
Ronald Reagan Washington (DCA) 1
Effective 2026-04-09 through 2026-05-22
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
09:50
Tampa (TPA)

12:10
Ronald Reagan Washington (DCA) 1
Effective 2026-05-25 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
09:55
Tampa (TPA)

12:15
Ronald Reagan Washington (DCA) 1
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
10:05
Tampa (TPA)

12:25
Ronald Reagan Washington (DCA) 1
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
10:20
Memphis (MEM)

11:40
Dallas Love Field (DAL) 1
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4551
12:05
Pensacola (PNS)

13:50
Houston Hobby (HOU)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4551
18:45
Phoenix Sky Harbor (PHX) 4

21:00
El Paso (ELP)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4551
19:30
Chicago Midway (MDW)

22:25
Tucson (TUS)
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Chicago Midway (MDW) - Tucson (TUS)
  • Memphis (MEM) - Dallas Love Field (DAL)
  • Pensacola (PNS) - Houston Hobby (HOU)
  • Phoenix Sky Harbor (PHX) - El Paso (ELP)
  • San Jose (SJC) - Salt Lake City (SLC)
  • Tampa (TPA) - Ronald Reagan Washington (DCA)
All Southwest Airlines flights
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