Southwest Airlines flight WN 4128: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:00 Los Angeles (LAX) 1 10:05 Dallas Love Field (DAL) 1
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 3:05 Effective 2026-06-04 through 2026-08-03
Tue,Wed 05:05 Los Angeles (LAX) 1 10:10 Dallas Love Field (DAL) 1
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-06-09 through 2026-07-29
Sat 06:25 Phoenix Sky Harbor (PHX) 4 09:50 Houston Hobby (HOU)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2026-01-03
Mon 07:00 Phoenix Sky Harbor (PHX) 4 08:40 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2026-01-05
Tue,Wed 08:55 Denver (DEN) 10:25 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 10:40 Dallas Love Field (DAL) 1 11:40 Oklahoma City (OKC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-06-04 through 2026-08-03
Tue,Wed 10:50 Dallas Love Field (DAL) 1 13:55 Atlanta (ATL) N
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 2:05 Effective 2026-06-09 through 2026-07-29
Tue,Wed 11:10 Salt Lake City (SLC) 12:05 Long Beach (LGB)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-04-07 through 2026-06-03
Sat 12:05 Detroit (DTW) E 14:45 Orlando (MCO)
WN 4128 Non-stop Boeing 737-800 (73H) 2:40 Effective 2026-02-14 through 2026-02-28
Tue,Wed 12:40 Long Beach (LGB) 14:00 Phoenix Sky Harbor (PHX) 4
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-04-07 through 2026-06-03
Sat 12:40 Phoenix Sky Harbor (PHX) 4 17:55 Chicago Midway (MDW)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-11 through 2026-05-30
Sun 13:35 Phoenix Sky Harbor (PHX) 4 18:50 Chicago Midway (MDW)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-12 through 2026-05-17
Sun 13:35 Phoenix Sky Harbor (PHX) 4 18:50 Chicago Midway (MDW)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Operates only on 2026-05-31
Mon,Thu,Fri 14:30 Phoenix Sky Harbor (PHX) 4 19:45 Chicago Midway (MDW)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-09 through 2026-06-01
Tue,Wed 14:40 Phoenix Sky Harbor (PHX) 4 19:55 Chicago Midway (MDW)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 17:25 Las Vegas Harry Reid (LAS) 1 18:40 Los Angeles (LAX) 1
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-08-06 through 2026-09-28
Sun 17:45 Los Angeles (LAX) 1 22:45 Dallas Love Field (DAL) 1
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-06-07 through 2026-08-02
Sun 18:05 Chicago Midway (MDW) 21:00 Charlotte (CLT)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Operates only on 2026-05-24
Sat 18:35 Chicago Midway (MDW) 21:30 Ronald Reagan Washington (DCA) 1
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-04-11 through 2026-05-30
Sun 19:30 Chicago Midway (MDW) 22:30 Charlotte (CLT)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-04-12 through 2026-05-17
Sun 19:30 Chicago Midway (MDW) 22:30 Charlotte (CLT)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Operates only on 2026-05-31
Sat 20:45 Dallas Love Field (DAL) 1 21:45 Oklahoma City (OKC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-06-06 through 2026-08-01
Mon,Tue,Fri,Sun 21:30 Las Vegas Harry Reid (LAS) 1 23:40 Phoenix Sky Harbor (PHX) 4
WN 4128 Non-stop Boeing 737-800 (73H) 1:10 Valid until 2026-01-04
Thu,Fri 21:55 Ontario, Los Angeles (ONT) 4 05:35 Baltimore (BWI)
WN 4128 Non-stop Boeing 737-800 (73H) 4:40 Effective 2026-03-05 through 2026-03-06
The flight arrives 1 day after departure.
Daily 21:55 Ontario, Los Angeles (ONT) 4 05:35 Baltimore (BWI)
WN 4128 Non-stop Boeing 737-800 (73H) 4:40 Effective 2026-03-08 through 2026-04-06
The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 05:00 Los Angeles (LAX) 1 11:40 Oklahoma City (OKC)
WN 4128 1-stop Boeing 737-700 (Scimitar Winglets) 4:40 Effective 2026-06-04 through 2026-08-03
Tue,Wed 05:05 Los Angeles (LAX) 1 13:55 Atlanta (ATL) N
WN 4128 1-stop Boeing 737 MAX 8 (7M8) 5:50 Effective 2026-06-09 through 2026-07-29
Tue,Wed 08:55 Denver (DEN) 12:05 Long Beach (LGB)
WN 4128 1-stop Boeing 737-700 (Scimitar Winglets) 4:10 Effective 2026-04-07 through 2026-06-03
Tue,Wed 11:10 Salt Lake City (SLC) 14:00 Phoenix Sky Harbor (PHX) 4
WN 4128 1-stop Boeing 737-700 (Scimitar Winglets) 3:50 Effective 2026-04-07 through 2026-06-03
Tue,Wed 12:40 Long Beach (LGB) 19:55 Chicago Midway (MDW)
WN 4128 1-stop Boeing 737-700 (Scimitar Winglets) 5:15 Effective 2026-04-07 through 2026-06-03
Sat 12:40 Phoenix Sky Harbor (PHX) 4 21:30 Ronald Reagan Washington (DCA) 1
WN 4128 1-stop Boeing 737 MAX 8 (7M8) 5:50 Effective 2026-04-11 through 2026-05-30
Sun 13:35 Phoenix Sky Harbor (PHX) 4 22:30 Charlotte (CLT)
WN 4128 1-stop Boeing 737 MAX 8 (7M8) 5:55 Effective 2026-04-12 through 2026-05-17
Sun 13:35 Phoenix Sky Harbor (PHX) 4 22:30 Charlotte (CLT)
WN 4128 1-stop Boeing 737 MAX 8 (7M8) 5:55 Operates only on 2026-05-31
Tue,Wed 08:55 Denver (DEN) 14:00 Phoenix Sky Harbor (PHX) 4
WN 4128 2-stop Boeing 737-700 (Scimitar Winglets) 6:05 Effective 2026-04-07 through 2026-06-03
Tue,Wed 11:10 Salt Lake City (SLC) 19:55 Chicago Midway (MDW)
WN 4128 2-stop Boeing 737-700 (Scimitar Winglets) 7:45 Effective 2026-04-07 through 2026-06-03
Tue,Wed 08:55 Denver (DEN) 19:55 Chicago Midway (MDW)
WN 4128 3-stop Boeing 737-700 (Scimitar Winglets) 10:00 Effective 2026-04-07 through 2026-06-03
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4128: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4128
05:00
Los Angeles (LAX) 1

10:05
Dallas Love Field (DAL) 1
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
05:05
Los Angeles (LAX) 1

10:10
Dallas Love Field (DAL) 1
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
06:25
Phoenix Sky Harbor (PHX) 4

09:50
Houston Hobby (HOU)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
07:00
Phoenix Sky Harbor (PHX) 4

08:40
Salt Lake City (SLC)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
08:55
Denver (DEN)

10:25
Salt Lake City (SLC)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
10:40
Dallas Love Field (DAL) 1

11:40
Oklahoma City (OKC)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
10:50
Dallas Love Field (DAL) 1

13:55
Atlanta (ATL) N
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
11:10
Salt Lake City (SLC)

12:05
Long Beach (LGB)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
12:05
Detroit (DTW) E

14:45
Orlando (MCO)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4128
12:40
Long Beach (LGB)

14:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
12:40
Phoenix Sky Harbor (PHX) 4

17:55
Chicago Midway (MDW)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
13:35
Phoenix Sky Harbor (PHX) 4

18:50
Chicago Midway (MDW)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
13:35
Phoenix Sky Harbor (PHX) 4

18:50
Chicago Midway (MDW)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
14:30
Phoenix Sky Harbor (PHX) 4

19:45
Chicago Midway (MDW)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
14:40
Phoenix Sky Harbor (PHX) 4

19:55
Chicago Midway (MDW)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
17:25
Las Vegas Harry Reid (LAS) 1

18:40
Los Angeles (LAX) 1
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
17:45
Los Angeles (LAX) 1

22:45
Dallas Love Field (DAL) 1
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
18:05
Chicago Midway (MDW)

21:00
Charlotte (CLT)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
18:35
Chicago Midway (MDW)

21:30
Ronald Reagan Washington (DCA) 1
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
19:30
Chicago Midway (MDW)

22:30
Charlotte (CLT)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
19:30
Chicago Midway (MDW)

22:30
Charlotte (CLT)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4128
20:45
Dallas Love Field (DAL) 1

21:45
Oklahoma City (OKC)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4128
21:30
Las Vegas Harry Reid (LAS) 1

23:40
Phoenix Sky Harbor (PHX) 4
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4128
21:55
Ontario, Los Angeles (ONT) 4

05:35(+1)
Baltimore (BWI)
Effective 2026-03-05 through 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:40, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN4128
21:55
Ontario, Los Angeles (ONT) 4

05:35(+1)
Baltimore (BWI)
Effective 2026-03-08 through 2026-04-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:40, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN4128
05:00
Los Angeles (LAX) 1

11:40
Oklahoma City (OKC)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:40, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4128
05:05
Los Angeles (LAX) 1

13:55
Atlanta (ATL) N
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:50, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4128
08:55
Denver (DEN)

12:05
Long Beach (LGB)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:10, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4128
11:10
Salt Lake City (SLC)

14:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:50, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4128
12:40
Long Beach (LGB)

19:55
Chicago Midway (MDW)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4128
12:40
Phoenix Sky Harbor (PHX) 4

21:30
Ronald Reagan Washington (DCA) 1
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:50, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4128
13:35
Phoenix Sky Harbor (PHX) 4

22:30
Charlotte (CLT)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:55, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4128
13:35
Phoenix Sky Harbor (PHX) 4

22:30
Charlotte (CLT)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:55, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4128
08:55
Denver (DEN)

14:00
Phoenix Sky Harbor (PHX) 4
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:05, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4128
11:10
Salt Lake City (SLC)

19:55
Chicago Midway (MDW)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 7:45, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN4128
08:55
Denver (DEN)

19:55
Chicago Midway (MDW)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 10:00, 3-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Chicago Midway (MDW) - Charlotte (CLT)
  • Chicago Midway (MDW) - Ronald Reagan Washington (DCA)
  • Dallas Love Field (DAL) - Atlanta (ATL)
  • Dallas Love Field (DAL) - Oklahoma City (OKC)
  • Denver (DEN) - Chicago Midway (MDW)
  • Denver (DEN) - Long Beach (LGB)
  • Denver (DEN) - Phoenix Sky Harbor (PHX)
  • Denver (DEN) - Salt Lake City (SLC)
  • Detroit (DTW) - Orlando (MCO)
  • Las Vegas Harry Reid (LAS) - Los Angeles (LAX)
  • Las Vegas Harry Reid (LAS) - Phoenix Sky Harbor (PHX)
  • Long Beach (LGB) - Chicago Midway (MDW)
  • Long Beach (LGB) - Phoenix Sky Harbor (PHX)
  • Los Angeles (LAX) - Atlanta (ATL)
  • Los Angeles (LAX) - Dallas Love Field (DAL)
  • Los Angeles (LAX) - Oklahoma City (OKC)
  • Ontario, Los Angeles (ONT) - Baltimore (BWI)
  • Phoenix Sky Harbor (PHX) - Charlotte (CLT)
  • Phoenix Sky Harbor (PHX) - Chicago Midway (MDW)
  • Phoenix Sky Harbor (PHX) - Houston Hobby (HOU)
  • Phoenix Sky Harbor (PHX) - Ronald Reagan Washington (DCA)
  • Salt Lake City (SLC) - Chicago Midway (MDW)
  • Salt Lake City (SLC) - Long Beach (LGB)
  • Salt Lake City (SLC) - Phoenix Sky Harbor (PHX)
All Southwest Airlines flights
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