Cheap Flights from Knoxville, TN to Denver, CO from $61

Return flight: Denver – Knoxville
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On Cheapflightsplus.com you will find 11 direct and 361 connecting flights from Knoxville to Denver. You can compare airfare deals from 3 airlines and multiple travel sites from $61, book and save on cheap plane tickets and last minute offers. Also check out TYS-DEN flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Knoxville to Denver Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $61 (one-way), $105 (round-trip).
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Best Flights from Knoxville to Denver Today

Take a look at the list of non stop flights and flights with layovers from Knoxville to Denver with the lowest price of $61. The fastest direct flight takes 3h 3m and the fastest connecting – 5h 35m.
Price Departure Arrival Flight Duration Airline Flight
from $61
Find flight
15:54
Knoxville
Mc Ghee Tyson
 16:57
Denver
Denver International
 3h 3m Allegiant Air
G41438
from $72
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17:25
Knoxville
Mc Ghee Tyson
 18:40
Denver
Denver International
 3h 15m Frontier Airlines
F94369
from $83
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10:00
Knoxville
Mc Ghee Tyson
 11:08
Denver
Denver International
 3h 8m Allegiant Air
G43031
from $103
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11:01
Knoxville
Mc Ghee Tyson
 16:23
Denver
Denver International
 7h 22m
layover
2h 53m - Minneapolis
 Allegiant Air
G41414
SY655
from $125
Find flight
11:01
Knoxville
Mc Ghee Tyson
 11:24+1 день
Denver
Denver International
 26h 23m
layover
21h 59m - Minneapolis
 Allegiant Air
G43064
SY1609
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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 15, 2025
Full flight schedule will help you in detecting at what time planes fly from Knoxville to Denver. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
09:00 — 10:26
09:00 — 10:26 UA5673 United Airlines
Knoxville — Denver
3h 26m
Find flight
from$230
10:00 — 11:08
10:00 — 11:08 G43031 Allegiant Air
Knoxville — Denver
3h 8m
Find flight
from$83
11:01 — 16:23
11:01 — 12:19 G41414 Allegiant Air
Knoxville — Minneapolis
2h 53m stop
15:12 — 16:23 SY655 Sun Country Airlines
Minneapolis — Denver
7h 22m
including layover
Find flight
from$103
11:01 — 13:17
+1 day
11:01 — 12:19 G43064 Allegiant Air
Knoxville — Minneapolis
23h 47m stop
12:06 — 13:17 SY653 Sun Country Airlines
Minneapolis — Denver
28h 16m
including layover
Find flight
from$109
11:01 — 11:22
+1 day
11:01 — 12:19 G41414 Allegiant Air
Knoxville — Minneapolis
21h 53m stop
10:12 — 11:22 SY1609 Sun Country Airlines
Minneapolis — Denver
26h 21m
including layover
Find flight
from$122
11:01 — 11:24
+1 day
11:01 — 12:19 G43064 Allegiant Air
Knoxville — Minneapolis
21h 59m stop
10:18 — 11:24 SY1609 Sun Country Airlines
Minneapolis — Denver
26h 23m
including layover
Find flight
from$125
11:01 — 15:59
11:01 — 12:19 G43064 Allegiant Air
Knoxville — Minneapolis
2h 29m stop
14:48 — 15:59 SY655 Sun Country Airlines
Minneapolis — Denver
6h 58m
including layover
Find flight
from$141
15:46 — 16:51
15:46 — 16:51 G41419 Allegiant Air
Knoxville — Denver
3h 5m
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from$88
15:54 — 16:57
15:54 — 16:57 G41438 Allegiant Air
Knoxville — Denver
3h 3m
Find flight
from$61
15:54 — 16:57
15:54 — 16:57 G43029 Allegiant Air
Knoxville — Denver
3h 3m
Find flight
from$64
15:56 — 16:59
15:56 — 16:59 G43058 Allegiant Air
Knoxville — Denver
3h 3m
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from$136
16:35 — 17:50
16:35 — 17:50 UA1787 United Airlines
Knoxville — Denver
3h 15m
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from$150
16:40 — 17:52
16:40 — 17:52 UA2745 United Airlines
Knoxville — Denver
3h 12m
Find flight
from$153
16:40 — 17:52
16:40 — 17:52 UA1306 United Airlines
Knoxville — Denver
3h 12m
Find flight
from$235
17:25 — 18:40
17:25 — 18:40 F94369 Frontier Airlines
Knoxville — Denver
3h 15m
Find flight
from$72
*Departure and arrival times - local. Updated on September 15, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Knoxville to Denver depends on and how to choose the most interesting flight option for you.

Distance between Knoxville and Denver is 1866 miles. Time difference between the cities is 2h. Airplanes depart 05:45 to 21:34 from 1 Knoxville airport and arrive 05:45 to 21:34 to 2 Denver airports. Average flight time is 3h 12m.

  • The fastest flight 3h 3m
  • Average flight time 3h 12m
  • The earliest flight 05:45
  • The latest flight 21:34
  • Distance 1160 ml

The cheapest months to travel to Denver are july (from 61 $), august (from 64 $), may (from 67 $).

The most expensive months are december (from 342 $), february (from 300 $), january (from 300 $).

What is the lowest airfare Knoxville to Denver?

The cheapest plane ticket found by our users is $61. This airfare is for economy class on one-way G41438 flight by Allegiant Air for July 6, 2025 which leaves Mc Ghee Tyson in Knoxville at 15:54 am and arrives at Denver Denver International at 16:57.

Economy class
$61
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Business class
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First class
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Popular Airlines on the Route

The flight Knoxville — Denver is served by 3 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 1 departures per week at the price of from $ 72 . And the most expensive tickets are offered by United Airlines airline - from $ 942.

Direct flights

There are 11 nonstop flights on the route. The fastest direct flight is G41438 by Allegiant Air takes 3h 3m and the cheapest is G41438 by Allegiant Air for $61.

  • F9 - Frontier Airlines
    from $72
    Find
  • UA - United Airlines
    from $150
    Find
  • G4 - Allegiant Air
    from $61
    Find
See more direct flights

Connecting Flights

There are 361 flights with layovers on the route. The fastest connecting flight is UA1594 by United Airlines takes 5h 35m and the cheapest is G41438 by Allegiant Air for $103.

  • UA - United Airlines
    from $245
    Find
  • G4 - Allegiant Air
    from $103
    Find
See more connecting flights

Airports

You can fly from Knoxville to Denver from 1 airports (Mc Ghee Tyson).

Knoxville airports

  • Mc Ghee Tyson-TYS
    from $61
    Find

Denver airports

  • Denver International-DEN
    Find
  • Arapahoe Co-APA
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Airplanes

There are flights to Denver from Knoxville by 3 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Knoxville

You may also consider searching for discounted plane tickets to some other popular places from Knoxville within United States.

Top International Destinations from Knoxville

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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