Southwest Airlines flights from Louisville (SDF) to Denver (DEN).

FLIGHT SCHEDULE
Direct Flights:
Sat 05:35 Louisville (SDF) 06:45 Denver (DEN) Southwest Airlines WN 433 Non-stop Boeing 737-800 (73H) 3:10 Effective 2026-02-14 through 2026-02-28
Sat 16:45 Louisville (SDF) 17:50 Denver (DEN) Southwest Airlines WN 646 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-10 through 2026-02-07
Sun 14:40 Louisville (SDF) 15:35 Denver (DEN) Southwest Airlines WN 1008 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-03-08 through 2026-04-05
Sun 10:55 Louisville (SDF) 11:40 Denver (DEN) Southwest Airlines WN 1267 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-06-07 through 2026-08-02
Tue,Wed 13:00 Louisville (SDF) 13:45 Denver (DEN) Southwest Airlines WN 1297 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 13:10 Louisville (SDF) 13:55 Denver (DEN) Southwest Airlines WN 1297 Non-stop Boeing 737-800 (73H) 2:45 Effective 2026-06-04 through 2026-08-03
Thu,Fri,Sun 13:30 Louisville (SDF) 14:30 Denver (DEN) Southwest Airlines WN 1388 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 13:30 Louisville (SDF) 14:30 Denver (DEN) Southwest Airlines WN 1388 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 13:30 Louisville (SDF) 14:30 Denver (DEN) Southwest Airlines WN 1388 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 13:30 Louisville (SDF) 14:30 Denver (DEN) Southwest Airlines WN 1388 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 13:30 Louisville (SDF) 14:30 Denver (DEN) Southwest Airlines WN 1388 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-02-17 through 2026-02-23
Mon 13:30 Louisville (SDF) 14:30 Denver (DEN) Southwest Airlines WN 1388 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Operates only on 2026-03-02
Tue,Wed 13:30 Louisville (SDF) 14:25 Denver (DEN) Southwest Airlines WN 1536 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-03-10 through 2026-04-01
Sat 14:55 Louisville (SDF) 15:40 Denver (DEN) Southwest Airlines WN 2117 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 13:10 Louisville (SDF) 14:05 Denver (DEN) Southwest Airlines WN 2137 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-04-09 through 2026-06-01
Sat 13:45 Louisville (SDF) 14:35 Denver (DEN) Southwest Airlines WN 2137 Non-stop Boeing 737-800 (73H) 2:50 Effective 2026-04-11 through 2026-05-30
Mon,Thu,Fri 12:00 Louisville (SDF) 13:00 Denver (DEN) Southwest Airlines WN 2338 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 12:00 Louisville (SDF) 13:00 Denver (DEN) Southwest Airlines WN 2338 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-02-20 through 2026-03-01
Mon,Tue,Fri,Sun 11:45 Louisville (SDF) 12:35 Denver (DEN) Southwest Airlines WN 2534 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Valid until 2026-01-04
Mon,Thu,Fri 15:35 Louisville (SDF) 16:30 Denver (DEN) Southwest Airlines WN 2837 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-03-05 through 2026-04-06
Sat 15:35 Louisville (SDF) 16:30 Denver (DEN) Southwest Airlines WN 2837 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-03-07 through 2026-04-04
Mon,Thu,Fri 10:40 Louisville (SDF) 11:25 Denver (DEN) Southwest Airlines WN 2901 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-08-06 through 2026-09-28
Sat 14:55 Louisville (SDF) 15:40 Denver (DEN) Southwest Airlines WN 2901 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-08-08 through 2026-09-26
Sat 05:40 Louisville (SDF) 06:35 Denver (DEN) Southwest Airlines WN 2949 Non-stop Boeing 737-800 (73H) 2:55 Valid until 2026-01-03
Sun 13:30 Louisville (SDF) 14:25 Denver (DEN) Southwest Airlines WN 3328 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-04-12 through 2026-05-17
Sun 13:30 Louisville (SDF) 14:25 Denver (DEN) Southwest Airlines WN 3328 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Operates only on 2026-05-31
Tue,Wed 18:40 Louisville (SDF) 19:30 Denver (DEN) Southwest Airlines WN 3328 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2026-04-07 through 2026-06-03
Sun 19:00 Louisville (SDF) 19:55 Denver (DEN) Southwest Airlines WN 3422 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Operates only on 2026-05-24
Wed,Thu 06:05 Louisville (SDF) 07:00 Denver (DEN) Southwest Airlines WN 3530 Non-stop Boeing 737-800 (73H) 2:55 Valid until 2026-01-01
Mon 17:30 Louisville (SDF) 18:25 Denver (DEN) Southwest Airlines WN 3530 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Operates only on 2026-01-05
Tue,Wed 12:10 Louisville (SDF) 12:55 Denver (DEN) Southwest Airlines WN 4499 Non-stop Boeing 737-800 (73H) 2:45 Effective 2026-08-04 through 2026-09-30
Sun 13:25 Louisville (SDF) 14:10 Denver (DEN) Southwest Airlines WN 4499 Non-stop Boeing 737-700 (Scimitar Winglets) 2:45 Effective 2026-08-09 through 2026-09-27
Mon-Fri 06:00 Louisville (SDF) 07:15 Denver (DEN) Southwest Airlines WN 4984 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 06:00 Louisville (SDF) 07:15 Denver (DEN) Southwest Airlines WN 4984 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-01-18 through 2026-01-23
Mon-Fri 06:00 Louisville (SDF) 07:15 Denver (DEN) Southwest Airlines WN 4984 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 06:00 Louisville (SDF) 07:15 Denver (DEN) Southwest Airlines WN 4984 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-02-08 through 2026-02-11
Tue,Wed 06:00 Louisville (SDF) 07:15 Denver (DEN) Southwest Airlines WN 4984 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-02-18 through 2026-03-04
Thu 11:20 Louisville (SDF) 12:10 Denver (DEN) Southwest Airlines WN 5028 Non-stop Boeing 737-800 (73H) 2:50 Operates only on 2026-04-30
Sun 19:10 Louisville (SDF) 20:05 Denver (DEN) Southwest Airlines WN 5087 Non-stop Boeing 737-800 (73H) 2:55 Operates only on 2026-05-03
Non-Direct Flights:
Mon,Thu,Fri 12:35 Louisville (SDF) 21:00 Denver (DEN) Southwest Airlines WN 670 3-stop Boeing 737-700 (Scimitar Winglets) 10:25 Effective 2026-06-04 through 2026-08-03

A domestic route departing from the Louisville airport (SDF) and arriving at Denver airport (DEN).
The flight distance is 1021 miles, or 1642 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-7 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 2:45 and 3:15.

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN433

05:35

Louisville (SDF)

06:45

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN646

16:45

Louisville (SDF)

17:50

Denver (DEN)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1008

14:40

Louisville (SDF)

15:35

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1267

10:55

Louisville (SDF)

11:40

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN1297

13:00

Louisville (SDF)

13:45

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1297

13:10

Louisville (SDF)

13:55

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1388

13:30

Louisville (SDF)

14:30

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1388

13:30

Louisville (SDF)

14:30

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1388

13:30

Louisville (SDF)

14:30

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1388

13:30

Louisville (SDF)

14:30

Denver (DEN)

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1388

13:30

Louisville (SDF)

14:30

Denver (DEN)

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1388

13:30

Louisville (SDF)

14:30

Denver (DEN)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1536

13:30

Louisville (SDF)

14:25

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2117

14:55

Louisville (SDF)

15:40

Denver (DEN)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN2137

13:10

Louisville (SDF)

14:05

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN2137

13:45

Louisville (SDF)

14:35

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:50, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2338

12:00

Louisville (SDF)

13:00

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2338

12:00

Louisville (SDF)

13:00

Denver (DEN)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2534

11:45

Louisville (SDF)

12:35

Denver (DEN)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN2837

15:35

Louisville (SDF)

16:30

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN2837

15:35

Louisville (SDF)

16:30

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN2901

10:40

Louisville (SDF)

11:25

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN2901

14:55

Louisville (SDF)

15:40

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN2949

05:40

Louisville (SDF)

06:35

Denver (DEN)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3328

13:30

Louisville (SDF)

14:25

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3328

13:30

Louisville (SDF)

14:25

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3328

18:40

Louisville (SDF)

19:30

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3422

19:00

Louisville (SDF)

19:55

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3530

06:05

Louisville (SDF)

07:00

Denver (DEN)

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3530

17:30

Louisville (SDF)

18:25

Denver (DEN)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4499

12:10

Louisville (SDF)

12:55

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4499

13:25

Louisville (SDF)

14:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4984

06:00

Louisville (SDF)

07:15

Denver (DEN)

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4984

06:00

Louisville (SDF)

07:15

Denver (DEN)

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4984

06:00

Louisville (SDF)

07:15

Denver (DEN)

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4984

06:00

Louisville (SDF)

07:15

Denver (DEN)

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4984

06:00

Louisville (SDF)

07:15

Denver (DEN)

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN5028

11:20

Louisville (SDF)

12:10

Denver (DEN)

Operates only on 2026-04-30

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:50, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN5087

19:10

Louisville (SDF)

20:05

Denver (DEN)

Operates only on 2026-05-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN670

12:35

Louisville (SDF)

21:00

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 10:25, 3-stop
Boeing 737-700 (Scimitar Winglets)

A domestic route departing from the Louisville airport (SDF) and arriving at Denver airport (DEN).
The flight distance is 1021 miles, or 1642 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-7 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 2:45 and 3:15.

All SDF-DEN flights

All Southwest Airlines flights

Return (DEN-SDF) flights

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