Southwest Airlines flight WN 4577: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 15:10 Fort Lauderdale (FLL) 1 17:40 Baltimore (BWI)
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-03-07 through 2026-04-04
Mon 15:15 Fort Myers (RSW) 17:05 Saint Louis (STL) 2
WN 4577 Non-stop Boeing 737-700 (Scimitar Winglets) 2:50 Operates only on 2026-02-16
Sun 15:15 Baltimore (BWI) 18:10 San Jose (SJC) B
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 5:55 Effective 2026-03-08 through 2026-04-05
Sun 15:50 Dallas Love Field (DAL) 1 19:40 Miami (MIA)
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2026-06-07 through 2026-08-02
Tue,Wed,Sun 16:55 Santa Ana (SNA) 18:15 Phoenix Sky Harbor (PHX) 4
WN 4577 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-08-04 through 2026-09-30
Sat 18:20 Baltimore (BWI) 21:05 San Jose (SJC) B
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 5:45 Effective 2026-03-07 through 2026-04-04
Thu 18:30 Nashville (BNA) 21:15 Baltimore (BWI)
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Valid until 2026-01-01
Sat 18:30 Jackson (JAN) 19:45 Nashville (BNA)
WN 4577 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Operates only on 2026-01-03
Mon,Thu,Fri 18:30 Santa Ana (SNA) 19:50 Phoenix Sky Harbor (PHX) 4
WN 4577 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-08-06 through 2026-09-28
Tue,Wed 18:55 Baltimore (BWI) 21:45 San Jose (SJC) B
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 5:50 Effective 2026-03-10 through 2026-04-01
Sat 21:55 Baltimore (BWI) 23:10 Buffalo (BUF)
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 22:50 Tampa (TPA) 00:35 Chicago Midway (MDW)
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-03-05 through 2026-04-06
The flight arrives 1 day after departure.
Mon,Thu,Fri 22:55 Baltimore (BWI) 00:10 Buffalo (BUF)
WN 4577 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-06-04 through 2026-08-03
The flight arrives 1 day after departure.
Non-Direct Flights:
Sat 15:10 Fort Lauderdale (FLL) 1 21:05 San Jose (SJC) B
WN 4577 1-stop Boeing 737 MAX 8 (7M8) 8:55 Effective 2026-03-07 through 2026-04-04
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4577: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4577
15:10
Fort Lauderdale (FLL) 1

17:40
Baltimore (BWI)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
15:15
Fort Myers (RSW)

17:05
Saint Louis (STL) 2
Operates only on 2026-02-16
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4577
15:15
Baltimore (BWI)

18:10
San Jose (SJC) B
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
15:50
Dallas Love Field (DAL) 1

19:40
Miami (MIA)
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
16:55
Santa Ana (SNA)

18:15
Phoenix Sky Harbor (PHX) 4
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4577
18:20
Baltimore (BWI)

21:05
San Jose (SJC) B
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
18:30
Nashville (BNA)

21:15
Baltimore (BWI)
Valid until 2026-01-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
18:30
Jackson (JAN)

19:45
Nashville (BNA)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4577
18:30
Santa Ana (SNA)

19:50
Phoenix Sky Harbor (PHX) 4
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4577
18:55
Baltimore (BWI)

21:45
San Jose (SJC) B
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
21:55
Baltimore (BWI)

23:10
Buffalo (BUF)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4577
22:50
Tampa (TPA)

00:35(+1)
Chicago Midway (MDW)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN4577
22:55
Baltimore (BWI)

00:10(+1)
Buffalo (BUF)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN4577
15:10
Fort Lauderdale (FLL) 1

21:05
San Jose (SJC) B
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 8:55, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Buffalo (BUF)
  • Baltimore (BWI) - San Jose (SJC)
  • Dallas Love Field (DAL) - Miami (MIA)
  • Fort Lauderdale (FLL) - Baltimore (BWI)
  • Fort Lauderdale (FLL) - San Jose (SJC)
  • Fort Myers (RSW) - Saint Louis (STL)
  • Jackson (JAN) - Nashville (BNA)
  • Nashville (BNA) - Baltimore (BWI)
  • Santa Ana (SNA) - Phoenix Sky Harbor (PHX)
  • Tampa (TPA) - Chicago Midway (MDW)
All Southwest Airlines flights
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