Southwest Airlines flight WN 3865: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sun 05:45 Sacramento (SMF) B 08:25 Salt Lake City (SLC) WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-04-12 through 2026-05-17
Sun 05:45 Sacramento (SMF) B 08:25 Salt Lake City (SLC) WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Operates only on 2026-05-31
Sun 08:25 Saint Louis (STL) 2 10:40 Houston Hobby (HOU) WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-03-08 through 2026-04-05
Sun 11:15 Houston Hobby (HOU) 12:50 Ontario, Los Angeles (ONT) 4 WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 3:35 Effective 2026-03-08 through 2026-04-05
Sun 13:25 Ontario, Los Angeles (ONT) 4 14:45 Phoenix Sky Harbor (PHX) 4 WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-03-08 through 2026-04-05
Tue,Wed 18:50 Las Vegas Harry Reid (LAS) 1 20:20 San Jose (SJC) B WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-06-09 through 2026-07-29
Sun 18:55 Las Vegas Harry Reid (LAS) 1 20:25 San Jose (SJC) B WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 19:35 Las Vegas Harry Reid (LAS) 1 21:05 San Jose (SJC) B WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-06-04 through 2026-08-03
Sat 19:45 Oakland (OAK) 2 20:55 Burbank (BUR) WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Operates only on 2026-01-03
Mon 19:50 Oakland (OAK) 2 21:05 Burbank (BUR) WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Operates only on 2026-01-05
Sun 20:20 Oakland (OAK) 2 21:35 Burbank (BUR) WN 3865 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Operates only on 2026-01-04
Tue,Wed 20:45 Saint Louis (STL) 2 21:50 Chicago Midway (MDW) WN 3865 Non-stop Boeing 737-800 (73H) 1:05 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 20:50 Saint Louis (STL) 2 21:55 Chicago Midway (MDW) WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 1:05 Effective 2026-08-06 through 2026-09-28
Mon,Thu,Fri 20:55 Houston Hobby (HOU) 22:30 Ontario, Los Angeles (ONT) 4 WN 3865 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-03-05 through 2026-04-06
Tue,Wed 21:30 Houston Hobby (HOU) 23:05 Ontario, Los Angeles (ONT) 4 WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-03-10 through 2026-04-01
Sat 22:50 Houston Hobby (HOU) 00:25 Ontario, Los Angeles (ONT) 4 WN 3865 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-03-14 through 2026-04-04 The flight arrives 1 day after departure.
Non-Direct Flights:
Sun 08:25 Saint Louis (STL) 2 12:50 Ontario, Los Angeles (ONT) 4 WN 3865 1-stop Boeing 737-700 (Scimitar Winglets) 6:25 Effective 2026-03-08 through 2026-04-05
Sun 11:15 Houston Hobby (HOU) 14:45 Phoenix Sky Harbor (PHX) 4 WN 3865 1-stop Boeing 737-700 (Scimitar Winglets) 5:30 Effective 2026-03-08 through 2026-04-05
Sun 08:25 Saint Louis (STL) 2 14:45 Phoenix Sky Harbor (PHX) 4 WN 3865 2-stop Boeing 737-700 (Scimitar Winglets) 8:20 Effective 2026-03-08 through 2026-04-05

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This flight number is listed as serving the following routes:

Houston Hobby (HOU) - Ontario, Los Angeles (ONT)
Houston Hobby (HOU) - Phoenix Sky Harbor (PHX)
Las Vegas Harry Reid (LAS) - San Jose (SJC)
Oakland (OAK) - Burbank (BUR)
Ontario, Los Angeles (ONT) - Phoenix Sky Harbor (PHX)
Sacramento (SMF) - Salt Lake City (SLC)
Saint Louis (STL) - Chicago Midway (MDW)
Saint Louis (STL) - Houston Hobby (HOU)
Saint Louis (STL) - Ontario, Los Angeles (ONT)
Saint Louis (STL) - Phoenix Sky Harbor (PHX)

All Southwest Airlines flights

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Southwest Airlines flight WN 3865: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3865

05:45

Sacramento (SMF) B

08:25

Salt Lake City (SLC)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3865

05:45

Sacramento (SMF) B

08:25

Salt Lake City (SLC)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3865

08:25

Saint Louis (STL) 2

10:40

Houston Hobby (HOU)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

11:15

Houston Hobby (HOU)

12:50

Ontario, Los Angeles (ONT) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

13:25

Ontario, Los Angeles (ONT) 4

14:45

Phoenix Sky Harbor (PHX) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

18:50

Las Vegas Harry Reid (LAS) 1

20:20

San Jose (SJC) B

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

18:55

Las Vegas Harry Reid (LAS) 1

20:25

San Jose (SJC) B

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3865

19:35

Las Vegas Harry Reid (LAS) 1

21:05

San Jose (SJC) B

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3865

19:45

Oakland (OAK) 2

20:55

Burbank (BUR)

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

19:50

Oakland (OAK) 2

21:05

Burbank (BUR)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

20:20

Oakland (OAK) 2

21:35

Burbank (BUR)

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3865

20:45

Saint Louis (STL) 2

21:50

Chicago Midway (MDW)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3865

20:50

Saint Louis (STL) 2

21:55

Chicago Midway (MDW)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3865

20:55

Houston Hobby (HOU)

22:30

Ontario, Los Angeles (ONT) 4

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3865

21:30

Houston Hobby (HOU)

23:05

Ontario, Los Angeles (ONT) 4

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3865

22:50

Houston Hobby (HOU)

00:25(+1)

Ontario, Los Angeles (ONT) 4

Effective 2026-03-14 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN3865

08:25

Saint Louis (STL) 2

12:50

Ontario, Los Angeles (ONT) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 6:25, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3865

11:15

Houston Hobby (HOU)

14:45

Phoenix Sky Harbor (PHX) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:30, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3865

08:25

Saint Louis (STL) 2

14:45

Phoenix Sky Harbor (PHX) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 8:20, 2-stop
Boeing 737-700 (Scimitar Winglets)

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Parallax here

This flight number is listed as serving the following routes:

Houston Hobby (HOU) - Ontario, Los Angeles (ONT)
Houston Hobby (HOU) - Phoenix Sky Harbor (PHX)
Las Vegas Harry Reid (LAS) - San Jose (SJC)
Oakland (OAK) - Burbank (BUR)
Ontario, Los Angeles (ONT) - Phoenix Sky Harbor (PHX)
Sacramento (SMF) - Salt Lake City (SLC)
Saint Louis (STL) - Chicago Midway (MDW)
Saint Louis (STL) - Houston Hobby (HOU)
Saint Louis (STL) - Ontario, Los Angeles (ONT)
Saint Louis (STL) - Phoenix Sky Harbor (PHX)

All Southwest Airlines flights

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