Southwest Airlines flight WN 3900: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Mon 06:00 Oakland (OAK) 2 07:30 San Diego (SAN) 1 WN 3900 Non-stop Boeing 737-800 (73H) 1:30 Operates only on 2026-01-05
Mon-Sat 06:00 Santa Rosa (STS) 07:40 San Diego (SAN) 1 WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:40 Effective 2026-08-04 through 2026-09-30
Fri,Sun 06:20 Oakland (OAK) 2 07:50 San Diego (SAN) 1 WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-01-02 through 2026-01-04
Sun 07:05 Santa Rosa (STS) 08:50 San Diego (SAN) 1 WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-08-09 through 2026-09-27
Wed,Thu 09:40 Oakland (OAK) 2 11:10 San Diego (SAN) 1 WN 3900 Non-stop Boeing 737-800 (73H) 1:30 Valid until 2026-01-01
Sun 09:40 Tucson (TUS) 12:35 Denver (DEN) WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Operates only on 2026-05-24
Sat 12:05 Phoenix Sky Harbor (PHX) 4 12:55 Tucson (TUS) WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 0:50 Effective 2026-04-11 through 2026-05-30
Tue,Wed 12:15 San Diego (SAN) 1 13:40 Tucson (TUS) WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 13:10 Las Vegas Harry Reid (LAS) 1 14:40 Tucson (TUS) WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-04-09 through 2026-06-01
Sat 13:45 Tucson (TUS) 16:40 Denver (DEN) WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-04-11 through 2026-05-30
Tue,Wed 14:15 Tucson (TUS) 17:10 Denver (DEN) WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-04-07 through 2026-06-03
Sun 14:30 Tucson (TUS) 17:25 Denver (DEN) WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-04-12 through 2026-05-17
Sun 14:30 Tucson (TUS) 17:25 Denver (DEN) WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Operates only on 2026-05-31
Tue 14:50 Las Vegas Harry Reid (LAS) 1 19:25 Dallas Love Field (DAL) 1 WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Operates only on 2026-01-06
Mon,Thu,Fri 15:20 Tucson (TUS) 18:15 Denver (DEN) WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2026-04-09 through 2026-06-01
Mon,Thu,Fri 20:55 Saint Louis (STL) 2 23:25 Cleveland (CLE) WN 3900 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-06-04 through 2026-08-03
Tue,Wed 21:20 Orlando (MCO) 23:05 Saint Louis (STL) 2 WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-03-10 through 2026-04-01
Sat 21:55 Orlando (MCO) 23:45 Saint Louis (STL) 2 WN 3900 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2026-03-07 through 2026-04-04
Sun 22:30 Orlando (MCO) 00:15 Saint Louis (STL) 2 WN 3900 Non-stop Boeing 737-800 (73H) 2:45 Effective 2026-03-08 through 2026-04-05 The flight arrives 1 day after departure.
Mon,Thu,Fri 22:55 Orlando (MCO) 00:40 Saint Louis (STL) 2 WN 3900 Non-stop Boeing 737-800 (73H) 2:45 Effective 2026-03-05 through 2026-04-06 The flight arrives 1 day after departure.
Non-Direct Flights:
Sat 12:05 Phoenix Sky Harbor (PHX) 4 16:40 Denver (DEN) WN 3900 1-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-04-11 through 2026-05-30
Tue,Wed 12:15 San Diego (SAN) 1 17:10 Denver (DEN) WN 3900 1-stop Boeing 737-700 (Scimitar Winglets) 3:55 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 13:10 Las Vegas Harry Reid (LAS) 1 18:15 Denver (DEN) WN 3900 1-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-04-09 through 2026-06-01

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This flight number is listed as serving the following routes:

Las Vegas Harry Reid (LAS) - Dallas Love Field (DAL)
Las Vegas Harry Reid (LAS) - Denver (DEN)
Las Vegas Harry Reid (LAS) - Tucson (TUS)
Oakland (OAK) - San Diego (SAN)
Orlando (MCO) - Saint Louis (STL)
Phoenix Sky Harbor (PHX) - Denver (DEN)
Phoenix Sky Harbor (PHX) - Tucson (TUS)
Saint Louis (STL) - Cleveland (CLE)
San Diego (SAN) - Denver (DEN)
San Diego (SAN) - Tucson (TUS)
Santa Rosa (STS) - San Diego (SAN)
Tucson (TUS) - Denver (DEN)

All Southwest Airlines flights

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Southwest Airlines flight WN 3900: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3900

06:00

Oakland (OAK) 2

07:30

San Diego (SAN) 1

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3900

06:00

Santa Rosa (STS)

07:40

San Diego (SAN) 1

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun
-

Duration: 1:40, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3900

06:20

Oakland (OAK) 2

07:50

San Diego (SAN) 1

Effective 2026-01-02 through 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3900

07:05

Santa Rosa (STS)

08:50

San Diego (SAN) 1

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3900

09:40

Oakland (OAK) 2

11:10

San Diego (SAN) 1

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3900

09:40

Tucson (TUS)

12:35

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3900

12:05

Phoenix Sky Harbor (PHX) 4

12:55

Tucson (TUS)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 0:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3900

12:15

San Diego (SAN) 1

13:40

Tucson (TUS)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3900

13:10

Las Vegas Harry Reid (LAS) 1

14:40

Tucson (TUS)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3900

13:45

Tucson (TUS)

16:40

Denver (DEN)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3900

14:15

Tucson (TUS)

17:10

Denver (DEN)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3900

14:30

Tucson (TUS)

17:25

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3900

14:30

Tucson (TUS)

17:25

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3900

14:50

Las Vegas Harry Reid (LAS) 1

19:25

Dallas Love Field (DAL) 1

Operates only on 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3900

15:20

Tucson (TUS)

18:15

Denver (DEN)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3900

20:55

Saint Louis (STL) 2

23:25

Cleveland (CLE)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3900

21:20

Orlando (MCO)

23:05

Saint Louis (STL) 2

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3900

21:55

Orlando (MCO)

23:45

Saint Louis (STL) 2

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3900

22:30

Orlando (MCO)

00:15(+1)

Saint Louis (STL) 2

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:45, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN3900

22:55

Orlando (MCO)

00:40(+1)

Saint Louis (STL) 2

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN3900

12:05

Phoenix Sky Harbor (PHX) 4

16:40

Denver (DEN)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:35, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN3900

12:15

San Diego (SAN) 1

17:10

Denver (DEN)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:55, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3900

13:10

Las Vegas Harry Reid (LAS) 1

18:15

Denver (DEN)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, 1-stop
Boeing 737 MAX 8 (7M8)

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Parallax here

This flight number is listed as serving the following routes:

Las Vegas Harry Reid (LAS) - Dallas Love Field (DAL)
Las Vegas Harry Reid (LAS) - Denver (DEN)
Las Vegas Harry Reid (LAS) - Tucson (TUS)
Oakland (OAK) - San Diego (SAN)
Orlando (MCO) - Saint Louis (STL)
Phoenix Sky Harbor (PHX) - Denver (DEN)
Phoenix Sky Harbor (PHX) - Tucson (TUS)
Saint Louis (STL) - Cleveland (CLE)
San Diego (SAN) - Denver (DEN)
San Diego (SAN) - Tucson (TUS)
Santa Rosa (STS) - San Diego (SAN)
Tucson (TUS) - Denver (DEN)

All Southwest Airlines flights

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