Southwest Airlines
flight
WN 1721:
Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
Mon
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Fri
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Sat
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Sun
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Operates only on 2026-01-03
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: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Operates only on 2026-01-02
Mon
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Tue
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Wed
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Thu
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Fri
Sat
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Sun
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Duration: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Operates only on 2026-01-04
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: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Operates only on 2026-01-06
Mon
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Tue
Wed
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Thu
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Fri
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Sat
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Sun
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Duration: 1:20, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-01-07 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
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Sun
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Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-01-18 through 2026-01-23
Mon
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Tue
Wed
Thu
Fri
Sat
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Sun
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
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Sun
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Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-08 through 2026-02-11
Mon
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Tue
Wed
Thu
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Fri
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Sat
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Sun
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-18 through 2026-03-04
Mon
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Tue
Wed
Thu
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Fri
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Sat
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Sun
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Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 0:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-07 through 2026-04-04
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: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-05 through 2026-04-06
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
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Duration: 0:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Operates only on 2026-01-05
Mon
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
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Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-07 through 2026-04-04
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: 1:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-10 through 2026-04-01
Mon
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Tue
Wed
Thu
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Fri
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Sat
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Sun
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Duration: 0:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-05 through 2026-04-06
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
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Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-10 through 2026-04-01
Mon
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Tue
Wed
Thu
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Fri
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Sat
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Sun
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Duration: 4:05, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-04-11 through 2026-05-30
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: 3:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-04-12 through 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: 3:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
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: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-06-07 through 2026-08-02
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: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
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: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-04-07 through 2026-06-03
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 3:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-08-09 through 2026-09-27
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: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-08-06 through 2026-09-28
Mon
Tue
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Wed
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Thu
Fri
Sat
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-
Sun
-
-
Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-06-04 through 2026-08-03
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-14 through 2026-02-28
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: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-01-11 through 2026-01-16
Mon
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Tue
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Wed
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Thu
Fri
Sat
-
-
Sun
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-01-19 through 2026-01-25
Mon
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: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-01 through 2026-02-06
Mon
-
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Tue
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Wed
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Thu
Fri
Sat
-
-
Sun
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-09 through 2026-02-15
Mon
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: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
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Thu
Fri
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Sat
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Sun
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Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Operates only on 2026-03-02
Mon
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
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Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-12 through 2026-02-16
Mon
Tue
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Wed
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Thu
Fri
Sat
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Sun
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Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1721
Effective 2026-02-20 through 2026-03-01
Mon
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Tue
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Wed
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Thu
Fri
Sat
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Sun
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 3:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 3:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-07 through 2026-04-04
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
-
-
Duration: 3:30, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 3:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 5:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-10 through 2026-04-01
Mon
-
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Tue
Wed
Thu
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Fri
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Sat
-
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Sun
-
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Duration: 5:40, 1-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 6:25, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 6:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1721
Effective 2026-03-08 through 2026-04-05
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: 9:35, 3-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here
This flight number is listed as serving the following routes:
- Baltimore (BWI) - Austin (AUS)
- Baltimore (BWI) - Denver (DEN)
- Baltimore (BWI) - Nashville (BNA)
- Baltimore (BWI) - Richmond (RIC)
- Fresno (FAT) - San Diego (SAN)
- Las Vegas Harry Reid (LAS) - Cleveland (CLE)
- Nashville (BNA) - Austin (AUS)
- New Orleans (MSY) - Austin (AUS)
- New Orleans (MSY) - Baltimore (BWI)
- New Orleans (MSY) - Nashville (BNA)
- New Orleans (MSY) - Richmond (RIC)
- Richmond (RIC) - Austin (AUS)
- Richmond (RIC) - Denver (DEN)
- Richmond (RIC) - Nashville (BNA)
- Saint Maarten (SXM) - Orlando (MCO)
- Salt Lake City (SLC) - San Diego (SAN)