Southwest Airlines flight WN 4140: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:45 Las Vegas Harry Reid (LAS) 1 08:35 Denver (DEN) WN 4140 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-02-12 through 2026-02-16
Fri,Sun 05:45 Las Vegas Harry Reid (LAS) 1 08:35 Denver (DEN) WN 4140 Non-stop Boeing 737 MAX 8 (7M8) 1:50 Effective 2026-02-20 through 2026-02-22
Thu,Fri,Sun 05:45 Las Vegas Harry Reid (LAS) 1 08:35 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:50 Effective 2026-02-26 through 2026-03-01
Thu,Fri,Sun 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-01-11 through 2026-01-16
Mon,Sun 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-02-01 through 2026-02-06
Mon 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Operates only on 2026-02-09
Tue,Thu,Sun 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-02-15 through 2026-02-19
Mon 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Operates only on 2026-02-23
Mon 05:55 Las Vegas Harry Reid (LAS) 1 08:50 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Operates only on 2026-03-02
Mon-Fri 06:00 Santa Rosa (STS) 07:45 San Diego (SAN) 1 WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-04-08 through 2026-06-03
Sat 06:05 Las Vegas Harry Reid (LAS) 1 09:00 Denver (DEN) WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-02-14 through 2026-02-28
Sat,Sun 06:05 Santa Rosa (STS) 07:50 San Diego (SAN) 1 WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-04-11 through 2026-05-23
Sat,Sun 06:05 Santa Rosa (STS) 07:50 San Diego (SAN) 1 WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-05-30 through 2026-05-31
Sun 06:10 Santa Rosa (STS) 07:55 San Diego (SAN) 1 WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Operates only on 2026-05-24
Sun 08:25 Saint Louis (STL) 2 10:50 San Antonio (SAT) A WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Effective 2026-03-08 through 2026-04-05
Tue,Wed 08:35 Saint Louis (STL) 2 11:00 San Antonio (SAT) A WN 4140 Non-stop Boeing 737-800 (73H) 2:25 Effective 2026-03-10 through 2026-04-01
Tue,Wed 09:00 Phoenix Sky Harbor (PHX) 4 13:15 San Antonio (SAT) A WN 4140 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-08-04 through 2026-09-30
Sun 10:30 Phoenix Sky Harbor (PHX) 4 14:40 San Antonio (SAT) A WN 4140 Non-stop Boeing 737-800 (73H) 2:10 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 15:10 Phoenix Sky Harbor (PHX) 4 19:20 San Antonio (SAT) A WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 2:10 Effective 2026-08-06 through 2026-09-28
Sat 17:50 Chicago Midway (MDW) 20:45 Atlanta (ATL) N WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 18:50 Chicago Midway (MDW) 21:45 Atlanta (ATL) N WN 4140 Non-stop Boeing 737-800 (73H) 1:55 Effective 2026-06-04 through 2026-08-03
Sat 21:35 Saint Louis (STL) 2 23:55 San Antonio (SAT) A WN 4140 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-03-07 through 2026-04-04

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Parallax here

This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Atlanta (ATL)
Las Vegas Harry Reid (LAS) - Denver (DEN)
Phoenix Sky Harbor (PHX) - San Antonio (SAT)
Saint Louis (STL) - San Antonio (SAT)
Santa Rosa (STS) - San Diego (SAN)

All Southwest Airlines flights

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Southwest Airlines flight WN 4140: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4140

05:45

Las Vegas Harry Reid (LAS) 1

08:35

Denver (DEN)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4140

05:45

Las Vegas Harry Reid (LAS) 1

08:35

Denver (DEN)

Effective 2026-02-20 through 2026-02-22

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 1:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4140

05:45

Las Vegas Harry Reid (LAS) 1

08:35

Denver (DEN)

Effective 2026-02-26 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:50, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Operates only on 2026-02-09

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Effective 2026-02-15 through 2026-02-19

Mon
-

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Operates only on 2026-02-23

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4140

05:55

Las Vegas Harry Reid (LAS) 1

08:50

Denver (DEN)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

06:00

Santa Rosa (STS)

07:45

San Diego (SAN) 1

Effective 2026-04-08 through 2026-06-03

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4140

06:05

Las Vegas Harry Reid (LAS) 1

09:00

Denver (DEN)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

06:05

Santa Rosa (STS)

07:50

San Diego (SAN) 1

Effective 2026-04-11 through 2026-05-23

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4140

06:05

Santa Rosa (STS)

07:50

San Diego (SAN) 1

Effective 2026-05-30 through 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4140

06:10

Santa Rosa (STS)

07:55

San Diego (SAN) 1

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4140

08:25

Saint Louis (STL) 2

10:50

San Antonio (SAT) A

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4140

08:35

Saint Louis (STL) 2

11:00

San Antonio (SAT) A

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:25, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

09:00

Phoenix Sky Harbor (PHX) 4

13:15

San Antonio (SAT) A

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4140

10:30

Phoenix Sky Harbor (PHX) 4

14:40

San Antonio (SAT) A

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4140

15:10

Phoenix Sky Harbor (PHX) 4

19:20

San Antonio (SAT) A

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4140

17:50

Chicago Midway (MDW)

20:45

Atlanta (ATL) N

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 WN4140

18:50

Chicago Midway (MDW)

21:45

Atlanta (ATL) N

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 WN4140

21:35

Saint Louis (STL) 2

23:55

San Antonio (SAT) A

Effective 2026-03-07 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

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Parallax here

This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Atlanta (ATL)
Las Vegas Harry Reid (LAS) - Denver (DEN)
Phoenix Sky Harbor (PHX) - San Antonio (SAT)
Saint Louis (STL) - San Antonio (SAT)
Santa Rosa (STS) - San Diego (SAN)

All Southwest Airlines flights

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