Southwest Airlines flight WN 3999: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sat 09:55 Saint Louis (STL) 2 13:15 Orlando (MCO) WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-04-11 through 2026-05-30
Mon,Thu,Fri 10:00 Tampa (TPA) 11:30 Austin (AUS) WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-06-04 through 2026-08-03
Tue,Wed 10:15 Saint Louis (STL) 2 13:35 Orlando (MCO) WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri,Sun 10:15 Saint Louis (STL) 2 13:35 Orlando (MCO) WN 3999 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-04-09 through 2026-05-22
Mon,Thu,Fri,Sun 10:15 Saint Louis (STL) 2 13:35 Orlando (MCO) WN 3999 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-05-25 through 2026-06-01
Sun 11:00 Saint Louis (STL) 2 14:20 Orlando (MCO) WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Operates only on 2026-05-24
Sat 12:15 Chicago Midway (MDW) 15:00 Ronald Reagan Washington (DCA) 1 WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-02-14 through 2026-02-28
Fri,Sun 12:25 Oakland (OAK) 2 13:55 Eugene (EUG) WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-01-02 through 2026-01-04
Sat 13:20 Oakland (OAK) 2 14:50 Eugene (EUG) WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Valid until 2026-01-03
Mon,Thu,Fri 13:45 Los Angeles (LAX) 1 15:10 Tucson (TUS) WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-08-06 through 2026-09-28
Sat 14:30 John Glenn Columbus (CMH) 16:50 Orlando (MCO) WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-08-08 through 2026-09-26
Sat 15:30 Eugene (EUG) 18:55 Denver (DEN) WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 2:25 Valid until 2026-01-03
Tue,Wed 15:35 John Glenn Columbus (CMH) 17:15 Las Vegas Harry Reid (LAS) 1 WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 4:40 Effective 2026-03-10 through 2026-04-01
Sun 17:30 Las Vegas Harry Reid (LAS) 1 19:05 San Jose (SJC) B WN 3999 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-03-08 through 2026-04-05
Tue,Wed 17:55 Las Vegas Harry Reid (LAS) 1 19:35 San Jose (SJC) B WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-03-10 through 2026-04-01
Sun 18:45 John Glenn Columbus (CMH) 21:05 Orlando (MCO) WN 3999 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-08-09 through 2026-09-27
Sat 20:35 Minneapolis/Saint Paul (MSP) 2 23:05 Phoenix Sky Harbor (PHX) 4 WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 3:30 Operates only on 2026-03-07
Sat 20:35 Minneapolis/Saint Paul (MSP) 2 22:05 Phoenix Sky Harbor (PHX) 4 WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 3:30 Effective 2026-03-14 through 2026-04-04
Mon 22:00 Las Vegas Harry Reid (LAS) 1 00:15 Tucson (TUS) WN 3999 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Operates only on 2026-01-05 The flight arrives 1 day after departure.
Non-Direct Flights:
Sat 13:20 Oakland (OAK) 2 18:55 Denver (DEN) WN 3999 1-stop Boeing 737 MAX 8 (7M8) 4:35 Valid until 2026-01-03
Tue,Wed 15:35 John Glenn Columbus (CMH) 19:35 San Jose (SJC) B WN 3999 1-stop Boeing 737 MAX 8 (7M8) 7:00 Effective 2026-03-10 through 2026-04-01

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This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Ronald Reagan Washington (DCA)
Eugene (EUG) - Denver (DEN)
John Glenn Columbus (CMH) - Las Vegas Harry Reid (LAS)
John Glenn Columbus (CMH) - Orlando (MCO)
John Glenn Columbus (CMH) - San Jose (SJC)
Las Vegas Harry Reid (LAS) - San Jose (SJC)
Las Vegas Harry Reid (LAS) - Tucson (TUS)
Los Angeles (LAX) - Tucson (TUS)
Minneapolis/Saint Paul (MSP) - Phoenix Sky Harbor (PHX)
Oakland (OAK) - Denver (DEN)
Oakland (OAK) - Eugene (EUG)
Saint Louis (STL) - Orlando (MCO)
Tampa (TPA) - Austin (AUS)

All Southwest Airlines flights

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Southwest Airlines flight WN 3999: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3999

09:55

Saint Louis (STL) 2

13:15

Orlando (MCO)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

10:00

Tampa (TPA)

11:30

Austin (AUS)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3999

10:15

Saint Louis (STL) 2

13:35

Orlando (MCO)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

10:15

Saint Louis (STL) 2

13:35

Orlando (MCO)

Effective 2026-04-09 through 2026-05-22

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3999

10:15

Saint Louis (STL) 2

13:35

Orlando (MCO)

Effective 2026-05-25 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3999

11:00

Saint Louis (STL) 2

14:20

Orlando (MCO)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3999

12:15

Chicago Midway (MDW)

15:00

Ronald Reagan Washington (DCA) 1

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

12:25

Oakland (OAK) 2

13:55

Eugene (EUG)

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 WN3999

13:20

Oakland (OAK) 2

14:50

Eugene (EUG)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

13:45

Los Angeles (LAX) 1

15:10

Tucson (TUS)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

14:30

John Glenn Columbus (CMH)

16:50

Orlando (MCO)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

15:30

Eugene (EUG)

18:55

Denver (DEN)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3999

15:35

John Glenn Columbus (CMH)

17:15

Las Vegas Harry Reid (LAS) 1

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3999

17:30

Las Vegas Harry Reid (LAS) 1

19:05

San Jose (SJC) B

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3999

17:55

Las Vegas Harry Reid (LAS) 1

19:35

San Jose (SJC) B

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3999

18:45

John Glenn Columbus (CMH)

21:05

Orlando (MCO)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3999

20:35

Minneapolis/Saint Paul (MSP) 2

23:05

Phoenix Sky Harbor (PHX) 4

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3999

20:35

Minneapolis/Saint Paul (MSP) 2

22:05

Phoenix Sky Harbor (PHX) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3999

22:00

Las Vegas Harry Reid (LAS) 1

00:15(+1)

Tucson (TUS)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN3999

13:20

Oakland (OAK) 2

18:55

Denver (DEN)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:35, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN3999

15:35

John Glenn Columbus (CMH)

19:35

San Jose (SJC) B

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:00, 1-stop
Boeing 737 MAX 8 (7M8)

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Parallax here

This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Ronald Reagan Washington (DCA)
Eugene (EUG) - Denver (DEN)
John Glenn Columbus (CMH) - Las Vegas Harry Reid (LAS)
John Glenn Columbus (CMH) - Orlando (MCO)
John Glenn Columbus (CMH) - San Jose (SJC)
Las Vegas Harry Reid (LAS) - San Jose (SJC)
Las Vegas Harry Reid (LAS) - Tucson (TUS)
Los Angeles (LAX) - Tucson (TUS)
Minneapolis/Saint Paul (MSP) - Phoenix Sky Harbor (PHX)
Oakland (OAK) - Denver (DEN)
Oakland (OAK) - Eugene (EUG)
Saint Louis (STL) - Orlando (MCO)
Tampa (TPA) - Austin (AUS)

All Southwest Airlines flights

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