Southwest Airlines flight WN 431: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 06:15 Seattle-Tacoma (SEA) 08:40 Las Vegas Harry Reid (LAS) 1
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2026-04-09 through 2026-06-01
Thu,Fri,Sun 07:15 Las Vegas Harry Reid (LAS) 1 08:40 Reno (RNO)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-01-11 through 2026-01-16
Mon,Sun 07:15 Las Vegas Harry Reid (LAS) 1 08:40 Reno (RNO)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-01-19 through 2026-01-25
Sun 07:15 Las Vegas Harry Reid (LAS) 1 08:40 Reno (RNO)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Operates only on 2026-02-01
Mon,Thu,Fri 07:20 Las Vegas Harry Reid (LAS) 1 08:45 Reno (RNO)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-02-05 through 2026-02-09
Tue,Thu,Sun 07:20 Las Vegas Harry Reid (LAS) 1 08:45 Reno (RNO)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-02-15 through 2026-02-19
Mon 07:20 Las Vegas Harry Reid (LAS) 1 08:45 Reno (RNO)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Effective 2026-02-23 through 2026-03-02
Sat 07:55 San Diego (SAN) 1 15:15 John Glenn Columbus (CMH)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 4:20 Operates only on 2026-01-03
Mon,Thu,Fri 08:30 Denver (DEN) 09:25 Phoenix Sky Harbor (PHX) 4
WN 431 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-06-04 through 2026-08-03
Sun 08:35 Dallas Love Field (DAL) 1 10:00 Memphis (MEM)
WN 431 Non-stop Boeing 737-800 (73H) 1:25 Effective 2026-08-09 through 2026-09-27
Sun 08:40 Denver (DEN) 09:35 Phoenix Sky Harbor (PHX) 4
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 08:45 Oakland (OAK) 2 10:10 Los Angeles (LAX) 1
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 08:45 Oakland (OAK) 2 10:10 Los Angeles (LAX) 1
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-20 through 2026-03-01
Tue,Wed 08:45 Denver (DEN) 09:40 Phoenix Sky Harbor (PHX) 4
WN 431 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-06-09 through 2026-07-29
Sat 08:55 Austin (AUS) 11:00 Nashville (BNA)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 2:05 Effective 2026-08-08 through 2026-09-26
Sat 09:00 Denver (DEN) 09:55 Phoenix Sky Harbor (PHX) 4
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-06-06 through 2026-08-01
Tue,Wed 09:15 Austin (AUS) 11:20 Nashville (BNA)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 2:05 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 09:20 Las Vegas Harry Reid (LAS) 1 10:30 Santa Ana (SNA)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-04-09 through 2026-06-01
Sat 09:40 Las Vegas Harry Reid (LAS) 1 10:50 Santa Ana (SNA)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-04-11 through 2026-05-30
Mon,Thu,Fri 10:05 Phoenix Sky Harbor (PHX) 4 11:20 Ontario, Los Angeles (ONT) 4
WN 431 Non-stop Boeing 737-800 (73H) 1:15 Effective 2026-06-04 through 2026-08-03
Mon,Thu,Fri 10:45 Los Angeles (LAX) 1 14:00 Denver (DEN)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 10:45 Los Angeles (LAX) 1 14:00 Denver (DEN)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-02-20 through 2026-03-01
Sat 12:20 Salt Lake City (SLC) 16:00 Austin (AUS)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-02-14 through 2026-02-28
Mon,Tue,Fri,Sun 12:25 San Diego (SAN) 1 19:50 John Glenn Columbus (CMH)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 4:25 Valid until 2026-01-04
Mon-Fri 12:35 Las Vegas Harry Reid (LAS) 1 14:00 Reno (RNO)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 12:35 Las Vegas Harry Reid (LAS) 1 14:00 Reno (RNO)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-01-18 through 2026-01-23
Mon-Fri 12:35 Las Vegas Harry Reid (LAS) 1 14:00 Reno (RNO)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 12:35 Las Vegas Harry Reid (LAS) 1 14:00 Reno (RNO)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-08 through 2026-02-11
Tue,Wed 12:35 Las Vegas Harry Reid (LAS) 1 14:00 Reno (RNO)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-18 through 2026-03-04
Sun 13:20 Panama City (ECP) 14:50 Nashville (BNA)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-05-24
Sun 14:00 Panama City (ECP) 15:30 Nashville (BNA)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-04-12 through 2026-05-17
Sun 14:00 Panama City (ECP) 15:30 Nashville (BNA)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-05-31
Mon,Thu,Fri 14:45 Denver (DEN) 20:20 New York LaGuardia (LGA) B
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 3:35 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 14:45 Denver (DEN) 20:20 New York LaGuardia (LGA) B
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 3:35 Effective 2026-02-20 through 2026-03-01
Sat 15:50 John Glenn Columbus (CMH) 16:20 Saint Louis (STL) 2
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Operates only on 2026-01-03
Tue,Wed 16:30 Portland (PWM) 18:10 Baltimore (BWI)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-03-10 through 2026-04-01
Thu 16:40 Chicago Midway (MDW) 18:40 Las Vegas Harry Reid (LAS) 1
WN 431 Non-stop Boeing 737-700 (73W) 4:00 Valid until 2026-01-01
Sat 16:50 Phoenix Sky Harbor (PHX) 4 21:05 Milwaukee (MKE)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-01-10 through 2026-02-07
Mon 17:15 Chicago Midway (MDW) 19:10 Las Vegas Harry Reid (LAS) 1
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Operates only on 2026-01-05
Sat 17:20 Portland (PWM) 19:05 Baltimore (BWI)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-03-07 through 2026-04-04
Sun 17:25 Portland (PWM) 19:10 Baltimore (BWI)
WN 431 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 17:30 Portland (PWM) 19:15 Baltimore (BWI)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2026-03-05 through 2026-04-06
Mon,Thu,Fri 18:10 Chicago Midway (MDW) 21:30 Portland (PWM)
WN 431 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-08-06 through 2026-09-28
Mon 19:55 Las Vegas Harry Reid (LAS) 1 22:35 El Paso (ELP)
WN 431 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Operates only on 2026-01-05
Non-Direct Flights:
Mon,Thu,Fri 06:15 Seattle-Tacoma (SEA) 10:30 Santa Ana (SNA)
WN 431 1-stop Boeing 737-700 (Scimitar Winglets) 4:15 Effective 2026-04-09 through 2026-06-01
Sat 07:55 San Diego (SAN) 1 16:20 Saint Louis (STL) 2
WN 431 1-stop Boeing 737-700 (Scimitar Winglets) 6:25 Operates only on 2026-01-03
Mon,Thu,Fri 08:30 Denver (DEN) 11:20 Ontario, Los Angeles (ONT) 4
WN 431 1-stop Boeing 737-800 (73H) 3:50 Effective 2026-06-04 through 2026-08-03
Mon,Thu,Fri 08:45 Oakland (OAK) 2 14:00 Denver (DEN)
WN 431 1-stop Boeing 737-700 (Scimitar Winglets) 4:15 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 08:45 Oakland (OAK) 2 14:00 Denver (DEN)
WN 431 1-stop Boeing 737-700 (Scimitar Winglets) 4:15 Effective 2026-02-20 through 2026-03-01
Mon,Thu,Fri 10:45 Los Angeles (LAX) 1 20:20 New York LaGuardia (LGA) B
WN 431 1-stop Boeing 737-700 (Scimitar Winglets) 6:35 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 10:45 Los Angeles (LAX) 1 20:20 New York LaGuardia (LGA) B
WN 431 1-stop Boeing 737-700 (Scimitar Winglets) 6:35 Effective 2026-02-20 through 2026-03-01
Mon 17:15 Chicago Midway (MDW) 22:35 El Paso (ELP)
WN 431 1-stop Boeing 737 MAX 8 (7M8) 6:20 Operates only on 2026-01-05
Mon,Thu,Fri 08:45 Oakland (OAK) 2 20:20 New York LaGuardia (LGA) B
WN 431 2-stop Boeing 737-700 (Scimitar Winglets) 8:35 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 08:45 Oakland (OAK) 2 20:20 New York LaGuardia (LGA) B
WN 431 2-stop Boeing 737-700 (Scimitar Winglets) 8:35 Effective 2026-02-20 through 2026-03-01
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Southwest Airlines flight WN 431: Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN431
06:15
Seattle-Tacoma (SEA)

08:40
Las Vegas Harry Reid (LAS) 1
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
07:15
Las Vegas Harry Reid (LAS) 1

08:40
Reno (RNO)
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
07:15
Las Vegas Harry Reid (LAS) 1

08:40
Reno (RNO)
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
07:15
Las Vegas Harry Reid (LAS) 1

08:40
Reno (RNO)
Operates only on 2026-02-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
07:20
Las Vegas Harry Reid (LAS) 1

08:45
Reno (RNO)
Effective 2026-02-05 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
07:20
Las Vegas Harry Reid (LAS) 1

08:45
Reno (RNO)
Effective 2026-02-15 through 2026-02-19
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
07:20
Las Vegas Harry Reid (LAS) 1

08:45
Reno (RNO)
Effective 2026-02-23 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
07:55
San Diego (SAN) 1

15:15
John Glenn Columbus (CMH)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
08:30
Denver (DEN)

09:25
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN431
08:35
Dallas Love Field (DAL) 1

10:00
Memphis (MEM)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN431
08:40
Denver (DEN)

09:35
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
08:45
Oakland (OAK) 2

10:10
Los Angeles (LAX) 1
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
08:45
Oakland (OAK) 2

10:10
Los Angeles (LAX) 1
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
08:45
Denver (DEN)

09:40
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN431
08:55
Austin (AUS)

11:00
Nashville (BNA)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:05, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
09:00
Denver (DEN)

09:55
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
09:15
Austin (AUS)

11:20
Nashville (BNA)
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
09:20
Las Vegas Harry Reid (LAS) 1

10:30
Santa Ana (SNA)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
09:40
Las Vegas Harry Reid (LAS) 1

10:50
Santa Ana (SNA)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
10:05
Phoenix Sky Harbor (PHX) 4

11:20
Ontario, Los Angeles (ONT) 4
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN431
10:45
Los Angeles (LAX) 1

14:00
Denver (DEN)
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
10:45
Los Angeles (LAX) 1

14:00
Denver (DEN)
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
12:20
Salt Lake City (SLC)

16:00
Austin (AUS)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
12:25
San Diego (SAN) 1

19:50
John Glenn Columbus (CMH)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
12:35
Las Vegas Harry Reid (LAS) 1

14:00
Reno (RNO)
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
12:35
Las Vegas Harry Reid (LAS) 1

14:00
Reno (RNO)
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
12:35
Las Vegas Harry Reid (LAS) 1

14:00
Reno (RNO)
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
12:35
Las Vegas Harry Reid (LAS) 1

14:00
Reno (RNO)
Effective 2026-02-08 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
12:35
Las Vegas Harry Reid (LAS) 1

14:00
Reno (RNO)
Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
13:20
Panama City (ECP)

14:50
Nashville (BNA)
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
14:00
Panama City (ECP)

15:30
Nashville (BNA)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
14:00
Panama City (ECP)

15:30
Nashville (BNA)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
14:45
Denver (DEN)

20:20
New York LaGuardia (LGA) B
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
14:45
Denver (DEN)

20:20
New York LaGuardia (LGA) B
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
15:50
John Glenn Columbus (CMH)

16:20
Saint Louis (STL) 2
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
16:30
Portland (PWM)

18:10
Baltimore (BWI)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
16:40
Chicago Midway (MDW)

18:40
Las Vegas Harry Reid (LAS) 1
Valid until 2026-01-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:00, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN431
16:50
Phoenix Sky Harbor (PHX) 4

21:05
Milwaukee (MKE)
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
17:15
Chicago Midway (MDW)

19:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
17:20
Portland (PWM)

19:05
Baltimore (BWI)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
17:25
Portland (PWM)

19:10
Baltimore (BWI)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN431
17:30
Portland (PWM)

19:15
Baltimore (BWI)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN431
18:10
Chicago Midway (MDW)

21:30
Portland (PWM)
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN431
19:55
Las Vegas Harry Reid (LAS) 1

22:35
El Paso (ELP)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN431
06:15
Seattle-Tacoma (SEA)

10:30
Santa Ana (SNA)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
07:55
San Diego (SAN) 1

16:20
Saint Louis (STL) 2
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:25, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
08:30
Denver (DEN)

11:20
Ontario, Los Angeles (ONT) 4
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:50, 1-stop
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN431
08:45
Oakland (OAK) 2

14:00
Denver (DEN)
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
08:45
Oakland (OAK) 2

14:00
Denver (DEN)
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 4:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
10:45
Los Angeles (LAX) 1

20:20
New York LaGuardia (LGA) B
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 6:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
10:45
Los Angeles (LAX) 1

20:20
New York LaGuardia (LGA) B
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 6:35, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
17:15
Chicago Midway (MDW)

22:35
El Paso (ELP)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN431
08:45
Oakland (OAK) 2

20:20
New York LaGuardia (LGA) B
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 8:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN431
08:45
Oakland (OAK) 2

20:20
New York LaGuardia (LGA) B
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 8:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Nashville (BNA)
  • Chicago Midway (MDW) - El Paso (ELP)
  • Chicago Midway (MDW) - Las Vegas Harry Reid (LAS)
  • Chicago Midway (MDW) - Portland (PWM)
  • Dallas Love Field (DAL) - Memphis (MEM)
  • Denver (DEN) - New York LaGuardia (LGA)
  • Denver (DEN) - Ontario, Los Angeles (ONT)
  • Denver (DEN) - Phoenix Sky Harbor (PHX)
  • John Glenn Columbus (CMH) - Saint Louis (STL)
  • Las Vegas Harry Reid (LAS) - El Paso (ELP)
  • Las Vegas Harry Reid (LAS) - Reno (RNO)
  • Las Vegas Harry Reid (LAS) - Santa Ana (SNA)
  • Los Angeles (LAX) - Denver (DEN)
  • Los Angeles (LAX) - New York LaGuardia (LGA)
  • Oakland (OAK) - Denver (DEN)
  • Oakland (OAK) - Los Angeles (LAX)
  • Oakland (OAK) - New York LaGuardia (LGA)
  • Panama City (ECP) - Nashville (BNA)
  • Phoenix Sky Harbor (PHX) - Milwaukee (MKE)
  • Phoenix Sky Harbor (PHX) - Ontario, Los Angeles (ONT)
  • Portland (PWM) - Baltimore (BWI)
  • Salt Lake City (SLC) - Austin (AUS)
  • San Diego (SAN) - John Glenn Columbus (CMH)
  • San Diego (SAN) - Saint Louis (STL)
  • Seattle-Tacoma (SEA) - Las Vegas Harry Reid (LAS)
  • Seattle-Tacoma (SEA) - Santa Ana (SNA)
All Southwest Airlines flights
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