Southwest Airlines flight WN 4578: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 07:20 Sarasota/Bradenton (SRQ) 09:40 Baltimore (BWI)
WN 4578 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-08-09 through 2026-09-27
Tue,Wed 07:30 Sarasota/Bradenton (SRQ) 09:55 Baltimore (BWI)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-08-04 through 2026-09-30
Sun 12:55 Saint Louis (STL) 2 16:30 Boston Logan (BOS) B
WN 4578 Non-stop Boeing 737-800 (73H) 2:35 Operates only on 2026-05-24
Sat 14:30 Denver (DEN) 19:50 Tampa (TPA)
WN 4578 Non-stop Boeing 737-800 (73H) 3:20 Valid until 2026-01-03
Mon,Tue,Fri,Sun 14:55 Denver (DEN) 20:15 Tampa (TPA)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 3:20 Valid until 2026-01-04
Sun 18:35 Albuquerque (ABQ) 20:00 Denver (DEN)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-04-12 through 2026-05-17
Sun 18:35 Albuquerque (ABQ) 20:00 Denver (DEN)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Operates only on 2026-05-31
Sat 19:40 Baltimore (BWI) 22:15 Tampa (TPA)
WN 4578 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-06-06 through 2026-08-01
Tue,Wed 20:05 Baltimore (BWI) 22:35 Tampa (TPA)
WN 4578 Non-stop Boeing 737-700 (Scimitar Winglets) 2:30 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 20:55 Denver (DEN) 21:55 Tucson (TUS)
WN 4578 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-08-06 through 2026-09-28
Mon,Thu,Fri 21:20 Baltimore (BWI) 23:50 Tampa (TPA)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-06-04 through 2026-08-03
Sat 22:40 Las Vegas Harry Reid (LAS) 1 01:25 Boise (BOI)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Operates only on 2026-03-07
The flight arrives 1 day after departure.
Sun 22:45 Las Vegas Harry Reid (LAS) 1 23:45 Palm Springs (PSP)
WN 4578 Non-stop Boeing 737 MAX 8 (7M8) 1:00 Effective 2026-03-08 through 2026-04-05
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4578: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4578
07:20
Sarasota/Bradenton (SRQ)

09:40
Baltimore (BWI)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4578
07:30
Sarasota/Bradenton (SRQ)

09:55
Baltimore (BWI)
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4578
12:55
Saint Louis (STL) 2

16:30
Boston Logan (BOS) B
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4578
14:30
Denver (DEN)

19:50
Tampa (TPA)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:20, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4578
14:55
Denver (DEN)

20:15
Tampa (TPA)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:20, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4578
18:35
Albuquerque (ABQ)

20:00
Denver (DEN)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4578
18:35
Albuquerque (ABQ)

20:00
Denver (DEN)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4578
19:40
Baltimore (BWI)

22:15
Tampa (TPA)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4578
20:05
Baltimore (BWI)

22:35
Tampa (TPA)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4578
20:55
Denver (DEN)

21:55
Tucson (TUS)
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4578
21:20
Baltimore (BWI)

23:50
Tampa (TPA)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4578
22:40
Las Vegas Harry Reid (LAS) 1

01:25(+1)
Boise (BOI)
Operates only on 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN4578
22:45
Las Vegas Harry Reid (LAS) 1

23:45
Palm Springs (PSP)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Albuquerque (ABQ) - Denver (DEN)
  • Baltimore (BWI) - Tampa (TPA)
  • Denver (DEN) - Tampa (TPA)
  • Denver (DEN) - Tucson (TUS)
  • Las Vegas Harry Reid (LAS) - Boise (BOI)
  • Las Vegas Harry Reid (LAS) - Palm Springs (PSP)
  • Saint Louis (STL) - Boston Logan (BOS)
  • Sarasota/Bradenton (SRQ) - Baltimore (BWI)
All Southwest Airlines flights
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