Southwest Airlines flights from Knoxville (TYS) to Denver (DEN).

FLIGHT SCHEDULE
Direct Flights:
Sun 16:40 Knoxville (TYS) 18:05 Denver (DEN) Southwest Airlines WN 121 Non-stop Boeing 737-700 (Scimitar Winglets) 3:25 Operates only on 2026-05-24
Sun 14:40 Knoxville (TYS) 16:05 Denver (DEN) Southwest Airlines WN 985 Non-stop Boeing 737-700 (Scimitar Winglets) 3:25 Effective 2026-04-12 through 2026-05-17
Sun 14:40 Knoxville (TYS) 16:05 Denver (DEN) Southwest Airlines WN 985 Non-stop Boeing 737-700 (Scimitar Winglets) 3:25 Operates only on 2026-05-31
Sat 13:55 Knoxville (TYS) 15:10 Denver (DEN) Southwest Airlines WN 1153 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-08-08 through 2026-09-26
Tue,Wed 15:00 Knoxville (TYS) 16:15 Denver (DEN) Southwest Airlines WN 1153 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 16:50 Knoxville (TYS) 18:05 Denver (DEN) Southwest Airlines WN 1177 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-08-06 through 2026-09-28
Mon,Thu,Fri,Sun 16:20 Knoxville (TYS) 17:35 Denver (DEN) Southwest Airlines WN 1645 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-06-04 through 2026-08-03
Sat 17:15 Knoxville (TYS) 18:35 Denver (DEN) Southwest Airlines WN 1645 Non-stop Boeing 737-700 (Scimitar Winglets) 3:20 Effective 2026-06-06 through 2026-08-01
Tue,Wed 17:40 Knoxville (TYS) 19:00 Denver (DEN) Southwest Airlines WN 1645 Non-stop Boeing 737-700 (Scimitar Winglets) 3:20 Effective 2026-06-09 through 2026-07-29
Sun 15:35 Knoxville (TYS) 16:50 Denver (DEN) Southwest Airlines WN 2241 Non-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-08-09 through 2026-09-27
Sat 12:20 Knoxville (TYS) 13:40 Denver (DEN) Southwest Airlines WN 3550 Non-stop Boeing 737-700 (Scimitar Winglets) 3:20 Effective 2026-04-11 through 2026-05-30

A domestic route departing from the Knoxville airport (TYS) and arriving at Denver airport (DEN).
The flight distance is 1159 miles, or 1865 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 3:15 and 3:25.

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN121

16:40

Knoxville (TYS)

18:05

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN985

14:40

Knoxville (TYS)

16:05

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN985

14:40

Knoxville (TYS)

16:05

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN1153

13:55

Knoxville (TYS)

15:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1153

15:00

Knoxville (TYS)

16:15

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1177

16:50

Knoxville (TYS)

18:05

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN1645

16:20

Knoxville (TYS)

17:35

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN1645

17:15

Knoxville (TYS)

18:35

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1645

17:40

Knoxville (TYS)

19:00

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN2241

15:35

Knoxville (TYS)

16:50

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3550

12:20

Knoxville (TYS)

13:40

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)

A domestic route departing from the Knoxville airport (TYS) and arriving at Denver airport (DEN).
The flight distance is 1159 miles, or 1865 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 3:15 and 3:25.

All TYS-DEN flights

All Southwest Airlines flights

Return (DEN-TYS) flights

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