Southwest Airlines flight WN 4128: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 05:25 San Francisco (SFO) 2 07:15 Phoenix Sky Harbor (PHX) 4
WN 4128 Non-stop Boeing 737-800 (73H) 1:50 Effective 2025-10-05 through 2025-10-26
Sun 06:05 Omaha (OMA) 07:20 Saint Louis (STL) 2
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-06-08 through 2025-08-03
Sun 06:05 Phoenix Sky Harbor (PHX) 4 07:45 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2025-11-30
Mon,Thu,Fri,Sun 06:45 Phoenix Sky Harbor (PHX) 4 08:25 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 06:45 Phoenix Sky Harbor (PHX) 4 08:25 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2025-11-21 through 2025-11-28
Fri,Sun 06:45 Phoenix Sky Harbor (PHX) 4 08:25 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2025-12-07 through 2025-12-14
Thu 06:45 Phoenix Sky Harbor (PHX) 4 08:25 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2025-12-18
Mon 06:45 Phoenix Sky Harbor (PHX) 4 08:25 Salt Lake City (SLC)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2026-01-05
Sun 08:00 Phoenix Sky Harbor (PHX) 4 10:10 Albuquerque (ABQ)
WN 4128 Non-stop Boeing 737-800 (73H) 1:10 Effective 2025-10-05 through 2025-10-26
Sat 08:15 Omaha (OMA) 09:30 Saint Louis (STL) 2
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-06-07 through 2025-08-02
Sun 08:25 Salt Lake City (SLC) 10:10 Denver (DEN)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Operates only on 2025-11-30
Fri 08:30 Omaha (OMA) 09:45 Saint Louis (STL) 2
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Operates only on 2025-07-04
Mon,Thu,Fri 09:00 Portland (PDX) 11:30 Phoenix Sky Harbor (PHX) 4
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2025-10-02 through 2025-10-31
Tue,Wed 10:20 Portland (PDX) 12:50 Phoenix Sky Harbor (PHX) 4
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2025-10-07 through 2025-10-29
Mon,Thu,Fri 10:25 Baltimore (BWI) 11:45 Providence (PVD)
WN 4128 Non-stop Boeing 737-700 (73W) 1:20 Effective 2025-08-07 through 2025-09-29
Sun 10:45 Baltimore (BWI) 12:05 Providence (PVD)
WN 4128 Non-stop Boeing 737-800 (73H) 1:20 Effective 2025-08-10 through 2025-08-24
Sun 10:45 Baltimore (BWI) 12:05 Providence (PVD)
WN 4128 Non-stop Boeing 737-800 (73H) 1:20 Effective 2025-09-07 through 2025-09-28
Tue,Wed 10:50 Baltimore (BWI) 12:10 Providence (PVD)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2025-08-05 through 2025-10-01
Sat 10:50 Baltimore (BWI) 12:10 Providence (PVD)
WN 4128 Non-stop Boeing 737-800 (73H) 1:20 Effective 2025-08-09 through 2025-09-27
Sat 11:20 Phoenix Sky Harbor (PHX) 4 15:35 Austin (AUS)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-10-04 through 2025-11-01
Mon,Thu,Fri 12:20 Phoenix Sky Harbor (PHX) 4 16:35 Austin (AUS)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-10-02 through 2025-10-31
Tue,Wed 13:30 Phoenix Sky Harbor (PHX) 4 15:40 Albuquerque (ABQ)
WN 4128 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2025-10-07 through 2025-10-29
Tue,Wed 14:30 Denver (DEN) 16:55 Omaha (OMA)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2025-06-10 through 2025-07-30
Tue,Wed 17:40 Omaha (OMA) 18:55 Saint Louis (STL) 2
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-06-10 through 2025-07-30
Mon,Thu,Fri 18:55 Harlingen (HRL) 20:05 Houston Hobby (HOU)
WN 4128 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Valid until 2025-06-02
Sun 20:00 Harlingen (HRL) 21:10 Houston Hobby (HOU)
WN 4128 Non-stop Boeing 737-700 (73W) 1:10 Valid until 2025-05-18
Sun 20:00 Harlingen (HRL) 21:10 Houston Hobby (HOU)
WN 4128 Non-stop Boeing 737-700 (73W) 1:10 Operates only on 2025-06-01
Non-Direct Flights:
Sun 05:25 San Francisco (SFO) 2 10:10 Albuquerque (ABQ)
WN 4128 1-stop Boeing 737-800 (73H) 3:45 Effective 2025-10-05 through 2025-10-26
Sun 06:05 Phoenix Sky Harbor (PHX) 4 10:10 Denver (DEN)
WN 4128 1-stop Boeing 737-700 (Scimitar Winglets) 4:05 Operates only on 2025-11-30
Mon,Thu,Fri 09:00 Portland (PDX) 16:35 Austin (AUS)
WN 4128 1-stop Boeing 737 MAX 8 (7M8) 5:35 Effective 2025-10-02 through 2025-10-31
Tue,Wed 10:20 Portland (PDX) 15:40 Albuquerque (ABQ)
WN 4128 1-stop Boeing 737-700 (Scimitar Winglets) 4:20 Effective 2025-10-07 through 2025-10-29
Tue,Wed 14:30 Denver (DEN) 18:55 Saint Louis (STL) 2
WN 4128 1-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2025-06-10 through 2025-07-30
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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
05:25
San Francisco (SFO) 2

07:15
Phoenix Sky Harbor (PHX) 4
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4128
06:05
Omaha (OMA)

07:20
Saint Louis (STL) 2
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
06:05
Phoenix Sky Harbor (PHX) 4

07:45
Salt Lake City (SLC)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4128
06:45
Phoenix Sky Harbor (PHX) 4

08:25
Salt Lake City (SLC)
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 WN4128
06:45
Phoenix Sky Harbor (PHX) 4

08:25
Salt Lake City (SLC)
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 WN4128
06:45
Phoenix Sky Harbor (PHX) 4

08:25
Salt Lake City (SLC)
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 WN4128
06:45
Phoenix Sky Harbor (PHX) 4

08:25
Salt Lake City (SLC)
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 WN4128
06:45
Phoenix Sky Harbor (PHX) 4

08:25
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)
Southwest Airlines WN4128
08:00
Phoenix Sky Harbor (PHX) 4

10:10
Albuquerque (ABQ)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4128
08:15
Omaha (OMA)

09:30
Saint Louis (STL) 2
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
08:25
Salt Lake City (SLC)

10:10
Denver (DEN)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4128
08:30
Omaha (OMA)

09:45
Saint Louis (STL) 2
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
09:00
Portland (PDX)

11:30
Phoenix Sky Harbor (PHX) 4
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
10:20
Portland (PDX)

12:50
Phoenix Sky Harbor (PHX) 4
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4128
10:25
Baltimore (BWI)

11:45
Providence (PVD)
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4128
10:45
Baltimore (BWI)

12:05
Providence (PVD)
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4128
10:45
Baltimore (BWI)

12:05
Providence (PVD)
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4128
10:50
Baltimore (BWI)

12:10
Providence (PVD)
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
10:50
Baltimore (BWI)

12:10
Providence (PVD)
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4128
11:20
Phoenix Sky Harbor (PHX) 4

15:35
Austin (AUS)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
12:20
Phoenix Sky Harbor (PHX) 4

16:35
Austin (AUS)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
13:30
Phoenix Sky Harbor (PHX) 4

15:40
Albuquerque (ABQ)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4128
14:30
Denver (DEN)

16:55
Omaha (OMA)
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
17:40
Omaha (OMA)

18:55
Saint Louis (STL) 2
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
18:55
Harlingen (HRL)

20:05
Houston Hobby (HOU)
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
20:00
Harlingen (HRL)

21:10
Houston Hobby (HOU)
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4128
20:00
Harlingen (HRL)

21:10
Houston Hobby (HOU)
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-700 (73W)
Non-Direct Flights:
Southwest Airlines WN4128
05:25
San Francisco (SFO) 2

10:10
Albuquerque (ABQ)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:45, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN4128
06:05
Phoenix Sky Harbor (PHX) 4

10:10
Denver (DEN)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4128
09:00
Portland (PDX)

16:35
Austin (AUS)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 5:35, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4128
10:20
Portland (PDX)

15:40
Albuquerque (ABQ)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:20, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4128
14:30
Denver (DEN)

18:55
Saint Louis (STL) 2
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:25, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Providence (PVD)
  • Denver (DEN) - Omaha (OMA)
  • Denver (DEN) - Saint Louis (STL)
  • Harlingen (HRL) - Houston Hobby (HOU)
  • Omaha (OMA) - Saint Louis (STL)
  • Phoenix Sky Harbor (PHX) - Albuquerque (ABQ)
  • Phoenix Sky Harbor (PHX) - Austin (AUS)
  • Phoenix Sky Harbor (PHX) - Denver (DEN)
  • Phoenix Sky Harbor (PHX) - Salt Lake City (SLC)
  • Portland (PDX) - Albuquerque (ABQ)
  • Portland (PDX) - Austin (AUS)
  • Portland (PDX) - Phoenix Sky Harbor (PHX)
  • Salt Lake City (SLC) - Denver (DEN)
  • San Francisco (SFO) - Albuquerque (ABQ)
  • San Francisco (SFO) - Phoenix Sky Harbor (PHX)
All Southwest Airlines flights
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