Southwest Airlines flight WN 4252: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 06:05 Boise (BOI) 07:15 Phoenix Sky Harbor (PHX) 4
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 08:55 Austin (AUS) 13:10 Baltimore (BWI)
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-06-04 through 2026-08-03
Tue,Wed 08:55 Austin (AUS) 13:10 Baltimore (BWI)
WN 4252 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-06-09 through 2026-07-29
Sat 11:15 Las Vegas Harry Reid (LAS) 1 16:10 Des Moines (DSM)
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-08 through 2026-09-26
Sun 12:30 Las Vegas Harry Reid (LAS) 1 18:15 Birmingham (BHM)
WN 4252 Non-stop Boeing 737-800 (73H) 3:45 Effective 2026-08-09 through 2026-09-27
Wed,Thu 16:55 San Diego (SAN) 1 18:35 San Francisco (SFO) 2
WN 4252 Non-stop Boeing 737-700 (73W) 1:40 Valid until 2026-01-01
Mon 17:40 San Diego (SAN) 1 19:20 San Francisco (SFO) 2
WN 4252 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Operates only on 2026-01-05
Sat 18:20 Milwaukee (MKE) 20:20 Las Vegas Harry Reid (LAS) 1
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-14 through 2026-02-28
Thu,Fri 19:25 Milwaukee (MKE) 21:25 Las Vegas Harry Reid (LAS) 1
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-12 through 2026-02-13
Mon 19:25 Milwaukee (MKE) 21:25 Las Vegas Harry Reid (LAS) 1
WN 4252 Non-stop Boeing 737-800 (73H) 4:00 Operates only on 2026-02-16
Thu,Fri,Sun 19:25 Milwaukee (MKE) 21:25 Las Vegas Harry Reid (LAS) 1
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-20 through 2026-03-01
Daily 22:55 San Jose (SJC) B 05:00 Chicago Midway (MDW)
WN 4252 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-04-07 through 2026-06-03
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4252: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4252
06:05
Boise (BOI)

07:15
Phoenix Sky Harbor (PHX) 4
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:10, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4252
08:55
Austin (AUS)

13:10
Baltimore (BWI)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4252
08:55
Austin (AUS)

13:10
Baltimore (BWI)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4252
11:15
Las Vegas Harry Reid (LAS) 1

16:10
Des Moines (DSM)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4252
12:30
Las Vegas Harry Reid (LAS) 1

18:15
Birmingham (BHM)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:45, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4252
16:55
San Diego (SAN) 1

18:35
San Francisco (SFO) 2
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN4252
17:40
San Diego (SAN) 1

19:20
San Francisco (SFO) 2
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN4252
18:20
Milwaukee (MKE)

20:20
Las Vegas Harry Reid (LAS) 1
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4252
19:25
Milwaukee (MKE)

21:25
Las Vegas Harry Reid (LAS) 1
Effective 2026-02-12 through 2026-02-13
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4252
19:25
Milwaukee (MKE)

21:25
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-02-16
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN4252
19:25
Milwaukee (MKE)

21:25
Las Vegas Harry Reid (LAS) 1
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN4252
22:55
San Jose (SJC) B

05:00(+1)
Chicago Midway (MDW)
Effective 2026-04-07 through 2026-06-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:
  • Austin (AUS) - Baltimore (BWI)
  • Boise (BOI) - Phoenix Sky Harbor (PHX)
  • Las Vegas Harry Reid (LAS) - Birmingham (BHM)
  • Las Vegas Harry Reid (LAS) - Des Moines (DSM)
  • Milwaukee (MKE) - Las Vegas Harry Reid (LAS)
  • San Diego (SAN) - San Francisco (SFO)
  • San Jose (SJC) - Chicago Midway (MDW)
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