Southwest Airlines flight WN 4556: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:00 Saint Louis (STL) 2 08:15 Tampa (TPA)
WN 4556 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-03-05 through 2026-04-06
Sat,Sun 05:05 Saint Louis (STL) 2 08:20 Tampa (TPA)
WN 4556 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-03-07 through 2026-04-05
Tue,Wed 06:15 Saint Louis (STL) 2 09:30 Tampa (TPA)
WN 4556 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-03-10 through 2026-04-01
Sat 11:20 Sacramento (SMF) B 12:50 Las Vegas Harry Reid (LAS) 1
WN 4556 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-08-08 through 2026-09-26
Sun 11:25 Sacramento (SMF) B 12:55 Las Vegas Harry Reid (LAS) 1
WN 4556 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-08-09 through 2026-09-27
Sat 12:30 Albuquerque (ABQ) 15:15 Dallas Love Field (DAL) 1
WN 4556 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Operates only on 2026-01-03
Tue,Wed 12:45 Sacramento (SMF) B 14:10 Las Vegas Harry Reid (LAS) 1
WN 4556 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-08-04 through 2026-09-30
Fri,Sun 13:05 Ronald Reagan Washington (DCA) 1 14:05 Nashville (BNA)
WN 4556 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-02 through 2026-01-04
Mon 13:35 Ronald Reagan Washington (DCA) 1 14:40 Nashville (BNA)
WN 4556 Non-stop Boeing 737-700 (Scimitar Winglets) 2:05 Operates only on 2026-01-05
Wed,Thu 15:35 Ronald Reagan Washington (DCA) 1 16:40 Nashville (BNA)
WN 4556 Non-stop Boeing 737-700 (73W) 2:05 Valid until 2026-01-01
Wed,Thu 17:15 Nashville (BNA) 20:10 Sarasota/Bradenton (SRQ)
WN 4556 Non-stop Boeing 737-700 (73W) 1:55 Valid until 2026-01-01
Mon,Thu,Fri 17:55 Sacramento (SMF) B 19:20 Las Vegas Harry Reid (LAS) 1
WN 4556 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-08-06 through 2026-09-28
Tue,Wed 21:20 Saint Louis (STL) 2 23:10 Los Angeles (LAX) 1
WN 4556 Non-stop Boeing 737-700 (Scimitar Winglets) 3:50 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 21:55 Saint Louis (STL) 2 23:45 Los Angeles (LAX) 1
WN 4556 Non-stop Boeing 737 MAX 8 (7M8) 3:50 Effective 2026-06-04 through 2026-08-03
Sun 22:50 Saint Louis (STL) 2 00:40 Los Angeles (LAX) 1
WN 4556 Non-stop Boeing 737-800 (73H) 3:50 Effective 2026-06-07 through 2026-08-02
The flight arrives 1 day after departure.
Non-Direct Flights:
Wed,Thu 15:35 Ronald Reagan Washington (DCA) 1 20:10 Sarasota/Bradenton (SRQ)
WN 4556 1-stop Boeing 737-700 (73W) 4:35 Valid until 2026-01-01
This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4556: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4556
05:00
Saint Louis (STL) 2

08:15
Tampa (TPA)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4556
05:05
Saint Louis (STL) 2

08:20
Tampa (TPA)
Effective 2026-03-07 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4556
06:15
Saint Louis (STL) 2

09:30
Tampa (TPA)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4556
11:20
Sacramento (SMF) B

12:50
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4556
11:25
Sacramento (SMF) B

12:55
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4556
12:30
Albuquerque (ABQ)

15:15
Dallas Love Field (DAL) 1
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4556
12:45
Sacramento (SMF) B

14:10
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4556
13:05
Ronald Reagan Washington (DCA) 1

14:05
Nashville (BNA)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4556
13:35
Ronald Reagan Washington (DCA) 1

14:40
Nashville (BNA)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4556
15:35
Ronald Reagan Washington (DCA) 1

16:40
Nashville (BNA)
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN4556
17:15
Nashville (BNA)

20:10
Sarasota/Bradenton (SRQ)
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN4556
17:55
Sacramento (SMF) B

19:20
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4556
21:20
Saint Louis (STL) 2

23:10
Los Angeles (LAX) 1
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4556
21:55
Saint Louis (STL) 2

23:45
Los Angeles (LAX) 1
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4556
22:50
Saint Louis (STL) 2

00:40(+1)
Los Angeles (LAX) 1
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:50, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN4556
15:35
Ronald Reagan Washington (DCA) 1

20:10
Sarasota/Bradenton (SRQ)
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:35, 1-stop
Boeing 737-700 (73W)
This flight number is listed as serving the following routes:
  • Albuquerque (ABQ) - Dallas Love Field (DAL)
  • Nashville (BNA) - Sarasota/Bradenton (SRQ)
  • Ronald Reagan Washington (DCA) - Nashville (BNA)
  • Ronald Reagan Washington (DCA) - Sarasota/Bradenton (SRQ)
  • Sacramento (SMF) - Las Vegas Harry Reid (LAS)
  • Saint Louis (STL) - Los Angeles (LAX)
  • Saint Louis (STL) - Tampa (TPA)
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