Southwest Airlines
flight
WN 4688:
Multiple routes
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4688
Effective 2026-06-04 through 2026-08-03
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
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Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-06-06 through 2026-08-01
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Duration: 1:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-08-04 through 2026-09-30
Mon
-
-
Tue
Wed
Thu
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Fri
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Sat
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Sun
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Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4688
Valid until 2026-01-04
Mon
Tue
Wed
-
-
Thu
-
-
Fri
Sat
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-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-04-12 through 2026-05-17
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Duration: 1:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4688
Operates only on 2026-05-31
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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-
Sun
Duration: 1:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-08-08 through 2026-09-26
Mon
-
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-01-18 through 2026-01-23
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-02-08 through 2026-02-11
Mon
-
-
Tue
Wed
Thu
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-
Fri
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-
Sat
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-
Sun
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-02-18 through 2026-03-04
Mon
-
-
Tue
Wed
Thu
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-
Fri
-
-
Sat
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-
Sun
-
-
Duration: 2:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-01-10 through 2026-02-07
Mon
-
-
Tue
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-
Wed
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Thu
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Fri
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Sat
Sun
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-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-08-09 through 2026-09-27
Mon
-
-
Tue
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-
Wed
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-
Thu
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Fri
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-
Sat
-
-
Sun
Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4688
Valid until 2026-01-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4688
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 3:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4688
Operates only on 2026-05-24
Mon
-
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Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.
Boeing 737-700 (Scimitar Winglets)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:
- Baltimore (BWI) - Tampa (TPA)
- Denver (DEN) - Boise (BOI)
- Kansas City (MCI) - Las Vegas Harry Reid (LAS)
- Kansas City (MCI) - Milwaukee (MKE)
- Nashville (BNA) - Norfolk (ORF)
- Phoenix Sky Harbor (PHX) - Milwaukee (MKE)