Southwest Airlines
flight
WN 4391:
Multiple routes
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4391
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: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4391
Operates only on 2026-03-07
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: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4391
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: 3:05, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4391
Effective 2026-03-14 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: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4391
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: 3:10, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4391
Effective 2026-08-04 through 2026-09-30
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: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4391
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: 3:10, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4391
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: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4391
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: 3:35, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4391
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: 3:35, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4391
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: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4391
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: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4391
Effective 2026-04-07 through 2026-06-03
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: 1:45, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4391
Valid until 2026-01-01
Mon
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Tue
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Wed
Thu
Fri
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Sat
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Sun
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Duration: 1:30, non-stop
Boeing 737-700 (73W)
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN4391
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
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Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4391
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: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
- Chicago Midway (MDW) - Salt Lake City (SLC)
- Denver (DEN) - El Paso (ELP)
- Houston Hobby (HOU) - Ontario, Los Angeles (ONT)
- Providence (PVD) - Chicago Midway (MDW)
- San Antonio (SAT) - Baltimore (BWI)
- Santa Ana (SNA) - Sacramento (SMF)