Southwest Airlines flight WN 1231: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 07:35 Las Vegas Harry Reid (LAS) 1 13:00 Milwaukee (MKE)
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2026-03-07 through 2026-04-04
Sun 08:00 Sacramento (SMF) B 09:25 Las Vegas Harry Reid (LAS) 1
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 1:25 Operates only on 2026-05-24
Sat 08:50 Sarasota/Bradenton (SRQ) 11:15 Pittsburgh (PIT)
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-04-11 through 2026-05-30
Tue,Wed 09:35 Las Vegas Harry Reid (LAS) 1 15:00 Milwaukee (MKE)
WN 1231 Non-stop Boeing 737-800 (73H) 3:25 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 10:10 Las Vegas Harry Reid (LAS) 1 15:40 Milwaukee (MKE)
WN 1231 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-03-05 through 2026-04-06
Sun 10:30 Las Vegas Harry Reid (LAS) 1 16:00 Milwaukee (MKE)
WN 1231 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 12:25 Bozeman (BZN) 16:20 Chicago Midway (MDW)
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-08-06 through 2026-09-28
Wed,Thu 13:15 San Diego (SAN) 1 15:40 Phoenix Sky Harbor (PHX) 4
WN 1231 Non-stop Boeing 737-700 (73W) 1:25 Valid until 2026-01-01
Sat 14:05 San Francisco (SFO) 2 15:45 Las Vegas Harry Reid (LAS) 1
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-08-08 through 2026-09-26
Sat 15:50 New York LaGuardia (LGA) B 18:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-02-14 through 2026-02-28
Sat 15:55 New York LaGuardia (LGA) B 18:40 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-800 (73H) 2:45 Effective 2026-01-10 through 2026-02-07
Sun 16:10 San Francisco (SFO) 2 17:50 Las Vegas Harry Reid (LAS) 1
WN 1231 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-08-09 through 2026-09-27
Wed,Thu 16:15 Phoenix Sky Harbor (PHX) 4 20:05 Saint Louis (STL) 2
WN 1231 Non-stop Boeing 737-700 (73W) 2:50 Valid until 2026-01-01
Tue,Wed 16:40 San Francisco (SFO) 2 18:25 Las Vegas Harry Reid (LAS) 1
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 16:55 New York LaGuardia (LGA) B 19:40 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 16:55 New York LaGuardia (LGA) B 19:40 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-02-20 through 2026-03-01
Sun 17:05 Sarasota/Bradenton (SRQ) 19:30 Pittsburgh (PIT)
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Effective 2026-04-12 through 2026-05-17
Sun 17:05 Sarasota/Bradenton (SRQ) 19:30 Pittsburgh (PIT)
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Operates only on 2026-05-31
Sat 17:20 Houston Hobby (HOU) 18:35 Colorado Springs (COS)
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-06-06 through 2026-08-01
Thu,Fri,Sun 17:30 New York LaGuardia (LGA) B 20:15 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-01-11 through 2026-01-16
Mon,Sun 17:30 New York LaGuardia (LGA) B 20:15 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 17:30 New York LaGuardia (LGA) B 20:15 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-02-01 through 2026-02-06
Mon,Sun 17:30 New York LaGuardia (LGA) B 20:15 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 17:30 New York LaGuardia (LGA) B 20:15 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-02-17 through 2026-02-23
Mon 17:30 New York LaGuardia (LGA) B 20:15 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Operates only on 2026-03-02
Sat 19:10 Colorado Springs (COS) 20:05 Phoenix Sky Harbor (PHX) 4
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-06-06 through 2026-08-01
Tue,Wed 19:55 Pittsburgh (PIT) 22:20 Tampa (TPA)
WN 1231 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-04-07 through 2026-06-03
Tue,Wed 19:55 Colorado Springs (COS) 20:45 Phoenix Sky Harbor (PHX) 4
WN 1231 Non-stop Boeing 737-800 (73H) 1:50 Effective 2026-06-09 through 2026-07-29
Sun 20:30 Phoenix Sky Harbor (PHX) 4 00:25 Saint Louis (STL) 2
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Valid until 2026-01-04
The flight arrives 1 day after departure.
Mon-Fri 20:40 New York LaGuardia (LGA) B 23:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 20:40 New York LaGuardia (LGA) B 23:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-01-18 through 2026-01-23
Mon-Fri 20:40 New York LaGuardia (LGA) B 23:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-01-26 through 2026-02-04
Sun 20:40 New York LaGuardia (LGA) B 23:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Operates only on 2026-02-08
Tue,Wed 20:40 New York LaGuardia (LGA) B 23:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-02-10 through 2026-02-11
Tue,Wed 20:40 New York LaGuardia (LGA) B 23:35 Atlanta (ATL) N
WN 1231 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-02-18 through 2026-03-04
Mon,Thu,Fri 20:40 Pittsburgh (PIT) 23:10 Tampa (TPA)
WN 1231 Non-stop Boeing 737-800 (73H) 2:30 Effective 2026-04-09 through 2026-06-01
Mon,Tue,Fri 20:45 Phoenix Sky Harbor (PHX) 4 00:35 Saint Louis (STL) 2
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Valid until 2026-01-02
The flight arrives 1 day after departure.
Sun 20:55 Colorado Springs (COS) 21:45 Phoenix Sky Harbor (PHX) 4
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 21:05 Colorado Springs (COS) 21:55 Phoenix Sky Harbor (PHX) 4
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-06-04 through 2026-08-03
Sat 21:25 Phoenix Sky Harbor (PHX) 4 01:20 Saint Louis (STL) 2
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Valid until 2026-01-03
The flight arrives 1 day after departure.
Sun 22:25 Phoenix Sky Harbor (PHX) 4 23:30 Las Vegas Harry Reid (LAS) 1
WN 1231 Non-stop Boeing 737 MAX 8 (7M8) 1:05 Effective 2026-06-07 through 2026-08-02
Non-Direct Flights:
Wed,Thu 13:15 San Diego (SAN) 1 20:05 Saint Louis (STL) 2
WN 1231 1-stop Boeing 737-700 (73W) 4:50 Valid until 2026-01-01
Sat 17:20 Houston Hobby (HOU) 20:05 Phoenix Sky Harbor (PHX) 4
WN 1231 1-stop Boeing 737-700 (Scimitar Winglets) 4:45 Effective 2026-06-06 through 2026-08-01
Sun 20:55 Colorado Springs (COS) 23:30 Las Vegas Harry Reid (LAS) 1
WN 1231 1-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-06-07 through 2026-08-02
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 1231: Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN1231
07:35
Las Vegas Harry Reid (LAS) 1

13:00
Milwaukee (MKE)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
08:00
Sacramento (SMF) B

09:25
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-05-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
08:50
Sarasota/Bradenton (SRQ)

11:15
Pittsburgh (PIT)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
09:35
Las Vegas Harry Reid (LAS) 1

15:00
Milwaukee (MKE)
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:25, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
10:10
Las Vegas Harry Reid (LAS) 1

15:40
Milwaukee (MKE)
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
10:30
Las Vegas Harry Reid (LAS) 1

16:00
Milwaukee (MKE)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
12:25
Bozeman (BZN)

16:20
Chicago Midway (MDW)
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
13:15
San Diego (SAN) 1

15:40
Phoenix Sky Harbor (PHX) 4
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN1231
14:05
San Francisco (SFO) 2

15:45
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
15:50
New York LaGuardia (LGA) B

18:35
Atlanta (ATL) N
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
15:55
New York LaGuardia (LGA) B

18:40
Atlanta (ATL) N
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
16:10
San Francisco (SFO) 2

17:50
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:40, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
16:15
Phoenix Sky Harbor (PHX) 4

20:05
Saint Louis (STL) 2
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN1231
16:40
San Francisco (SFO) 2

18:25
Las Vegas Harry Reid (LAS) 1
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
16:55
New York LaGuardia (LGA) B

19:40
Atlanta (ATL) N
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
16:55
New York LaGuardia (LGA) B

19:40
Atlanta (ATL) N
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:05
Sarasota/Bradenton (SRQ)

19:30
Pittsburgh (PIT)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
17:05
Sarasota/Bradenton (SRQ)

19:30
Pittsburgh (PIT)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
17:20
Houston Hobby (HOU)

18:35
Colorado Springs (COS)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:30
New York LaGuardia (LGA) B

20:15
Atlanta (ATL) N
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:30
New York LaGuardia (LGA) B

20:15
Atlanta (ATL) N
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:30
New York LaGuardia (LGA) B

20:15
Atlanta (ATL) N
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:30
New York LaGuardia (LGA) B

20:15
Atlanta (ATL) N
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:30
New York LaGuardia (LGA) B

20:15
Atlanta (ATL) N
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
17:30
New York LaGuardia (LGA) B

20:15
Atlanta (ATL) N
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
19:10
Colorado Springs (COS)

20:05
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 WN1231
19:55
Pittsburgh (PIT)

22:20
Tampa (TPA)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
19:55
Colorado Springs (COS)

20:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
20:30
Phoenix Sky Harbor (PHX) 4

00:25(+1)
Saint Louis (STL) 2
Valid until 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN1231
20:40
New York LaGuardia (LGA) B

23:35
Atlanta (ATL) N
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
20:40
New York LaGuardia (LGA) B

23:35
Atlanta (ATL) N
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
20:40
New York LaGuardia (LGA) B

23:35
Atlanta (ATL) N
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
20:40
New York LaGuardia (LGA) B

23:35
Atlanta (ATL) N
Operates only on 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1231
20:40
New York LaGuardia (LGA) B

23:35
Atlanta (ATL) N
Effective 2026-02-10 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
20:40
New York LaGuardia (LGA) B

23:35
Atlanta (ATL) N
Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
20:40
Pittsburgh (PIT)

23:10
Tampa (TPA)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1231
20:45
Phoenix Sky Harbor (PHX) 4

00:35(+1)
Saint Louis (STL) 2
Valid until 2026-01-02
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN1231
20:55
Colorado Springs (COS)

21:45
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
21:05
Colorado Springs (COS)

21:55
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1231
21:25
Phoenix Sky Harbor (PHX) 4

01:20(+1)
Saint Louis (STL) 2
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
Southwest Airlines WN1231
22:25
Phoenix Sky Harbor (PHX) 4

23:30
Las Vegas Harry Reid (LAS) 1
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:05, non-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN1231
13:15
San Diego (SAN) 1

20:05
Saint Louis (STL) 2
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:50, 1-stop
Boeing 737-700 (73W)
Non-Direct Flights:
Southwest Airlines WN1231
17:20
Houston Hobby (HOU)

20:05
Phoenix Sky Harbor (PHX) 4
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:45, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1231
20:55
Colorado Springs (COS)

23:30
Las Vegas Harry Reid (LAS) 1
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:35, 1-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Bozeman (BZN) - Chicago Midway (MDW)
  • Colorado Springs (COS) - Las Vegas Harry Reid (LAS)
  • Colorado Springs (COS) - Phoenix Sky Harbor (PHX)
  • Houston Hobby (HOU) - Colorado Springs (COS)
  • Houston Hobby (HOU) - Phoenix Sky Harbor (PHX)
  • Las Vegas Harry Reid (LAS) - Milwaukee (MKE)
  • New York LaGuardia (LGA) - Atlanta (ATL)
  • Phoenix Sky Harbor (PHX) - Las Vegas Harry Reid (LAS)
  • Phoenix Sky Harbor (PHX) - Saint Louis (STL)
  • Pittsburgh (PIT) - Tampa (TPA)
  • Sacramento (SMF) - Las Vegas Harry Reid (LAS)
  • San Diego (SAN) - Phoenix Sky Harbor (PHX)
  • San Diego (SAN) - Saint Louis (STL)
  • San Francisco (SFO) - Las Vegas Harry Reid (LAS)
  • Sarasota/Bradenton (SRQ) - Pittsburgh (PIT)
All Southwest Airlines flights
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