Southwest Airlines flight WN 4431: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 06:10 Richmond (RIC) 07:00 Baltimore (BWI)
WN 4431 Non-stop Boeing 737-800 (73H) 0:50 Effective 2025-10-05 through 2025-10-26
Mon,Thu,Fri 06:25 Richmond (RIC) 07:20 Baltimore (BWI)
WN 4431 Non-stop Boeing 737-800 (73H) 0:55 Effective 2025-10-02 through 2025-10-31
Tue,Wed,Sat 06:30 Richmond (RIC) 07:25 Baltimore (BWI)
WN 4431 Non-stop Boeing 737-800 (73H) 0:55 Effective 2025-10-04 through 2025-11-01
Sun 07:20 Saint Louis (STL) 2 09:00 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 3:40 Operates only on 2025-11-30
Mon,Thu,Fri 07:45 San Antonio (SAT) A 09:00 Denver (DEN)
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 07:45 San Antonio (SAT) A 09:00 Denver (DEN)
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-07-07 through 2025-08-04
Mon,Thu,Fri,Sun 08:45 Saint Louis (STL) 2 10:25 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:40 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 08:45 Saint Louis (STL) 2 10:25 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:40 Effective 2025-11-21 through 2025-11-28
Fri,Sun 08:45 Saint Louis (STL) 2 10:25 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:40 Effective 2025-12-07 through 2025-12-14
Thu 08:45 Saint Louis (STL) 2 10:25 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:40 Operates only on 2025-12-18
Mon 08:45 Saint Louis (STL) 2 10:25 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:40 Operates only on 2026-01-05
Sun 10:00 San Antonio (SAT) A 11:15 Denver (DEN)
WN 4431 Non-stop Boeing 737-800 (73H) 2:15 Effective 2025-06-08 through 2025-08-03
Sat 10:00 Saint Louis (STL) 2 11:35 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2025-11-08 through 2025-11-15
Sat 10:00 Saint Louis (STL) 2 11:35 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2025-12-06 through 2025-12-13
Fri 10:40 San Antonio (SAT) A 11:55 Denver (DEN)
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Operates only on 2025-07-04
Sat 12:15 Las Vegas Harry Reid (LAS) 1 13:35 Fresno (FAT)
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2025-11-08 through 2025-11-15
Sat 12:15 Las Vegas Harry Reid (LAS) 1 13:35 Fresno (FAT)
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2025-12-06 through 2025-12-13
Tue,Wed 13:05 Saint Louis (STL) 2 14:40 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:35 Effective 2025-11-04 through 2025-11-12
Mon-Thu 13:05 Saint Louis (STL) 2 14:40 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:35 Effective 2025-11-17 through 2025-11-20
Mon-Fri 13:05 Saint Louis (STL) 2 14:40 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:35 Effective 2025-12-02 through 2025-12-11
Mon-Wed 13:05 Saint Louis (STL) 2 14:40 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:35 Effective 2025-12-15 through 2025-12-17
Wed,Thu 13:05 Saint Louis (STL) 2 14:40 Las Vegas Harry Reid (LAS) 1
WN 4431 Non-stop Boeing 737-800 (73H) 3:35 Effective 2025-12-24 through 2026-01-01
Sat 13:15 San Antonio (SAT) A 14:30 Denver (DEN)
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2025-06-07 through 2025-08-02
Tue,Wed 13:20 San Antonio (SAT) A 14:35 Denver (DEN)
WN 4431 Non-stop Boeing 737-800 (73H) 2:15 Effective 2025-06-10 through 2025-07-30
Sat 20:20 Midway, Chicago (MDW) 23:20 New York LaGuardia (LGA) B
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2025-11-22 through 2025-11-29
Sat 20:20 Midway, Chicago (MDW) 23:20 New York LaGuardia (LGA) B
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2025-12-20 through 2026-01-03
Mon-Wed 20:25 Midway, Chicago (MDW) 23:25 New York LaGuardia (LGA) B
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 20:25 Midway, Chicago (MDW) 23:25 New York LaGuardia (LGA) B
WN 4431 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2025-12-19 through 2026-01-04
Non-Direct Flights:
Sat 10:00 Saint Louis (STL) 2 13:35 Fresno (FAT)
WN 4431 1-stop Boeing 737 MAX 8 (7M8) 5:35 Effective 2025-11-08 through 2025-11-15
Sat 10:00 Saint Louis (STL) 2 13:35 Fresno (FAT)
WN 4431 1-stop Boeing 737 MAX 8 (7M8) 5:35 Effective 2025-12-06 through 2025-12-13
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4431: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4431
06:10
Richmond (RIC)

07:00
Baltimore (BWI)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 0:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
06:25
Richmond (RIC)

07:20
Baltimore (BWI)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 0:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
06:30
Richmond (RIC)

07:25
Baltimore (BWI)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 0:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
07:20
Saint Louis (STL) 2

09:00
Las Vegas Harry Reid (LAS) 1
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:40, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
07:45
San Antonio (SAT) A

09:00
Denver (DEN)
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
07:45
San Antonio (SAT) A

09:00
Denver (DEN)
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
08:45
Saint Louis (STL) 2

10:25
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
08:45
Saint Louis (STL) 2

10:25
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
08:45
Saint Louis (STL) 2

10:25
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
08:45
Saint Louis (STL) 2

10:25
Las Vegas Harry Reid (LAS) 1
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
08:45
Saint Louis (STL) 2

10:25
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
10:00
San Antonio (SAT) A

11:15
Denver (DEN)
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
10:00
Saint Louis (STL) 2

11:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
10:00
Saint Louis (STL) 2

11:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
10:40
San Antonio (SAT) A

11:55
Denver (DEN)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
12:15
Las Vegas Harry Reid (LAS) 1

13:35
Fresno (FAT)
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
12:15
Las Vegas Harry Reid (LAS) 1

13:35
Fresno (FAT)
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
13:05
Saint Louis (STL) 2

14:40
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:35, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
13:05
Saint Louis (STL) 2

14:40
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:35, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
13:05
Saint Louis (STL) 2

14:40
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 3:35, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
13:05
Saint Louis (STL) 2

14:40
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:35, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
13:05
Saint Louis (STL) 2

14:40
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:35, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
13:15
San Antonio (SAT) A

14:30
Denver (DEN)
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
13:20
San Antonio (SAT) A

14:35
Denver (DEN)
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4431
20:20
Midway, Chicago (MDW)

23:20
New York LaGuardia (LGA) B
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
20:20
Midway, Chicago (MDW)

23:20
New York LaGuardia (LGA) B
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
20:25
Midway, Chicago (MDW)

23:25
New York LaGuardia (LGA) B
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
20:25
Midway, Chicago (MDW)

23:25
New York LaGuardia (LGA) B
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4431
10:00
Saint Louis (STL) 2

13:35
Fresno (FAT)
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:35, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4431
10:00
Saint Louis (STL) 2

13:35
Fresno (FAT)
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:35, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Las Vegas Harry Reid (LAS) - Fresno (FAT)
  • Midway, Chicago (MDW) - New York LaGuardia (LGA)
  • Richmond (RIC) - Baltimore (BWI)
  • Saint Louis (STL) - Fresno (FAT)
  • Saint Louis (STL) - Las Vegas Harry Reid (LAS)
  • San Antonio (SAT) - Denver (DEN)
All Southwest Airlines flights
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