Southwest Airlines
flight
WN 645:
Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN645
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: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN645
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
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Sun
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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
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Sun
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
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: 3:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
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: 3:00, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
Effective 2026-01-10 through 2026-01-31
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
Sun
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-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN645
Operates only on 2026-02-07
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: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:50, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
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 737-700 (Scimitar Winglets)
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN645
Effective 2026-03-08 through 2026-04-05
Mon
-
-
Tue
Wed
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 WN645
Effective 2026-08-05 through 2026-09-30
Mon
-
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Tue
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Wed
Thu
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Fri
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Sat
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Sun
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-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:55, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
-
Wed
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Thu
Fri
Sat
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-
Sun
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-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
Valid until 2026-01-04
Mon
Tue
Wed
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-
Thu
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Fri
Sat
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Sun
Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:40, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
Valid until 2026-01-04
Mon
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 3:30, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
Valid until 2026-01-04
Mon
Tue
Wed
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-
Thu
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-
Fri
Sat
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-
Sun
Duration: 3:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
Effective 2026-06-09 through 2026-07-29
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 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
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: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
Effective 2026-08-04 through 2026-09-29
Mon
-
-
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: 1:10, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
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: 2:40, non-stop
Boeing 737-800 (73H)
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN645
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: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN645
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: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN645
Valid until 2026-01-04
Mon
Tue
Wed
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Thu
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Fri
Sat
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Sun
Duration: 5:15, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN645
Valid until 2026-01-04
Mon
Tue
Wed
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Thu
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Fri
Sat
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Sun
Duration: 7:20, 1-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN645
Valid until 2026-01-04
Mon
Tue
Wed
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Thu
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Fri
Sat
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Sun
Duration: 9:45, 2-stop
Boeing 737 MAX 8 (7M8)
Boeing 737 MAX 8 (7M8)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here
This flight number is listed as serving the following routes:
- Austin (AUS) - Harlingen (HRL)
- Baltimore (BWI) - Kansas City (MCI)
- Baltimore (BWI) - Oakland (OAK)
- Baltimore (BWI) - Pittsburgh (PIT)
- Chicago Midway (MDW) - Baltimore (BWI)
- Chicago Midway (MDW) - Fort Myers (RSW)
- Fort Lauderdale (FLL) - John Glenn Columbus (CMH)
- Houston Hobby (HOU) - Atlanta (ATL)
- Houston Hobby (HOU) - Pittsburgh (PIT)
- Jacksonville (JAX) - Baltimore (BWI)
- Kansas City (MCI) - Oakland (OAK)
- Oakland (OAK) - Ontario, Los Angeles (ONT)
- Panama City (ECP) - Denver (DEN)
- Portland (PWM) - Baltimore (BWI)
- Portland (PWM) - Kansas City (MCI)
- Portland (PWM) - Oakland (OAK)
- Saint Louis (STL) - New York LaGuardia (LGA)
- Seattle-Tacoma (SEA) - Phoenix Sky Harbor (PHX)