Southwest Airlines flight WN 3666: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 13:10 Midway, Chicago (MDW) 15:25 Cleveland Hopkins (CLE) WN 3666 Non-stop Boeing 737-700 (73W) 1:15 Effective 2025-08-07 through 2025-09-29
Sun 13:45 Midway, Chicago (MDW) 16:00 Cleveland Hopkins (CLE) WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-08-10 through 2025-09-28
Mon,Thu,Fri 14:05 Milwaukee (MKE) 15:35 Denver (DEN) WN 3666 Non-stop Boeing 737-800 (73H) 2:30 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 14:05 Milwaukee (MKE) 15:35 Denver (DEN) WN 3666 Non-stop Boeing 737-800 (73H) 2:30 Effective 2025-07-07 through 2025-08-04
Sun 15:05 Milwaukee (MKE) 16:40 Denver (DEN) WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2025-06-08 through 2025-08-03
Sun 15:15 Orlando (MCO) 16:55 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737-800 (73H) 2:40 Operates only on 2025-11-30
Sat 15:20 Orlando (MCO) 17:00 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-11-08 through 2025-11-15
Sat 15:20 Orlando (MCO) 17:00 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-12-06 through 2025-12-13
Fri 16:25 Milwaukee (MKE) 18:05 Denver (DEN) WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2025-07-04
Mon,Thu,Fri,Sun 16:25 Orlando (MCO) 18:05 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 16:25 Orlando (MCO) 18:05 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-11-21 through 2025-11-28
Fri,Sun 16:25 Orlando (MCO) 18:05 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-12-07 through 2025-12-14
Thu 16:25 Orlando (MCO) 18:05 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2025-12-18
Mon 16:25 Orlando (MCO) 18:05 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2026-01-05
Tue,Wed 16:55 Milwaukee (MKE) 18:35 Denver (DEN) WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2025-06-10 through 2025-07-30
Tue,Wed 17:30 Orlando (MCO) 19:15 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-11-04 through 2025-11-12
Mon-Thu 17:30 Orlando (MCO) 19:15 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-11-17 through 2025-11-20
Mon-Fri 17:30 Orlando (MCO) 19:15 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-12-02 through 2025-12-11
Mon-Wed 17:30 Orlando (MCO) 19:15 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-12-15 through 2025-12-17
Wed,Thu 17:30 Orlando (MCO) 19:15 Saint Louis (STL) 2 WN 3666 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-12-24 through 2026-01-01
Sun 18:20 Philadelphia (PHL) E 20:30 Denver (DEN) WN 3666 Non-stop Boeing 737-800 (73H) 4:10 Effective 2025-10-05 through 2025-10-26
Tue,Wed 20:35 Midway, Chicago (MDW) 22:50 Cleveland Hopkins (CLE) WN 3666 Non-stop Boeing 737-800 (73H) 1:15 Effective 2025-08-05 through 2025-10-01

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Parallax here -

This flight number is listed as serving the following routes:

Midway, Chicago (MDW) - Cleveland Hopkins (CLE)
Milwaukee (MKE) - Denver (DEN)
Orlando (MCO) - Saint Louis (STL)
Philadelphia (PHL) - Denver (DEN)

All Southwest Airlines flights

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Southwest Airlines flight WN 3666: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3666

13:10

Midway, Chicago (MDW)

15:25

Cleveland Hopkins (CLE)

Effective 2025-08-07 through 2025-09-29

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-700 (73W)

Southwest Airlines WN3666

13:45

Midway, Chicago (MDW)

16:00

Cleveland Hopkins (CLE)

Effective 2025-08-10 through 2025-09-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

14:05

Milwaukee (MKE)

15:35

Denver (DEN)

Effective 2025-06-05 through 2025-07-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3666

14:05

Milwaukee (MKE)

15:35

Denver (DEN)

Effective 2025-07-07 through 2025-08-04

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:30, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3666

15:05

Milwaukee (MKE)

16:40

Denver (DEN)

Effective 2025-06-08 through 2025-08-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

15:15

Orlando (MCO)

16:55

Saint Louis (STL) 2

Operates only on 2025-11-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3666

15:20

Orlando (MCO)

17:00

Saint Louis (STL) 2

Effective 2025-11-08 through 2025-11-15

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

15:20

Orlando (MCO)

17:00

Saint Louis (STL) 2

Effective 2025-12-06 through 2025-12-13

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:25

Milwaukee (MKE)

18:05

Denver (DEN)

Operates only on 2025-07-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:25

Orlando (MCO)

18:05

Saint Louis (STL) 2

Effective 2025-11-02 through 2025-11-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:25

Orlando (MCO)

18:05

Saint Louis (STL) 2

Effective 2025-11-21 through 2025-11-28

Mon

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:25

Orlando (MCO)

18:05

Saint Louis (STL) 2

Effective 2025-12-07 through 2025-12-14

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:25

Orlando (MCO)

18:05

Saint Louis (STL) 2

Operates only on 2025-12-18

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:25

Orlando (MCO)

18:05

Saint Louis (STL) 2

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

16:55

Milwaukee (MKE)

18:35

Denver (DEN)

Effective 2025-06-10 through 2025-07-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)

Southwest Airlines WN3666

17:30

Orlando (MCO)

19:15

Saint Louis (STL) 2

Effective 2025-11-04 through 2025-11-12

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3666

17:30

Orlando (MCO)

19:15

Saint Louis (STL) 2

Effective 2025-11-17 through 2025-11-20

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3666

17:30

Orlando (MCO)

19:15

Saint Louis (STL) 2

Effective 2025-12-02 through 2025-12-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

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

Southwest Airlines WN3666

17:30

Orlando (MCO)

19:15

Saint Louis (STL) 2

Effective 2025-12-15 through 2025-12-17

Mon

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3666

17:30

Orlando (MCO)

19:15

Saint Louis (STL) 2

Effective 2025-12-24 through 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

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

Southwest Airlines WN3666

18:20

Philadelphia (PHL) E

20:30

Denver (DEN)

Effective 2025-10-05 through 2025-10-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:10, non-stop
Boeing 737-800 (73H)

Southwest Airlines WN3666

20:35

Midway, Chicago (MDW)

22:50

Cleveland Hopkins (CLE)

Effective 2025-08-05 through 2025-10-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-800 (73H)

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Parallax here -

This flight number is listed as serving the following routes:

Midway, Chicago (MDW) - Cleveland Hopkins (CLE)
Milwaukee (MKE) - Denver (DEN)
Orlando (MCO) - Saint Louis (STL)
Philadelphia (PHL) - Denver (DEN)

All Southwest Airlines flights

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