Cheap Flights from Knoxville, TN to Denver, CO from $66
Return flight: Denver – Knoxville
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 $66, 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: $66 (one-way), $113 (round-trip).
Direct flights
Check prices for return flight
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 $66. The fastest direct flight takes 3h 3m and the fastest connecting – 5h 35m.
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $66 | 15:54 Knoxville Mc Ghee Tyson | 16:57 Denver Denver International | 3h 3m | Allegiant Air | G41438 |
| from $69 | 15:54 Knoxville Mc Ghee Tyson | 16:57 Denver Denver International | 3h 3m | Allegiant Air | G43029 |
| from $78 | 17:25 Knoxville Mc Ghee Tyson | 18:40 Denver Denver International | 3h 15m | Frontier Airlines | F94369 |
| from $90 | 10:00 Knoxville Mc Ghee Tyson | 11:08 Denver Denver International | 3h 8m | Allegiant Air | G43031 |
| from $95 | 15:46 Knoxville Mc Ghee Tyson | 16:51 Denver Denver International | 3h 5m | Allegiant Air | G41419 |
| from $146 | 15:56 Knoxville Mc Ghee Tyson | 16:59 Denver Denver International | 3h 3m | Allegiant Air | G43058 |
| from $162 | 16:35 Knoxville Mc Ghee Tyson | 17:50 Denver Denver International | 3h 15m | United Airlines | UA1787 |
| from $165 | 16:40 Knoxville Mc Ghee Tyson | 17:52 Denver Denver International | 3h 12m | United Airlines | UA2745 |
| from $254 | 16:40 Knoxville Mc Ghee Tyson | 17:52 Denver Denver International | 3h 12m | United Airlines | UA1306 |
| from $111 | 11:01 Knoxville Mc Ghee Tyson | 16:23 Denver Denver International | 7h 22m layover 2h 53m - Minneapolis | Allegiant Air | G41414 SY655 |
| from $135 | 11:01 Knoxville Mc Ghee Tyson | 11:24+1 день Denver Denver International | 26h 23m layover 21h 59m - Minneapolis | Allegiant Air | G43064 SY1609 |
| from $156 | 10:59 Knoxville Mc Ghee Tyson | 16:01 Denver Denver International | 7h 2m layover 2h 36m - Minneapolis | Allegiant Air | G43024 SY655 |
| from $160 | 06:20 Knoxville Mc Ghee Tyson | 17:27 Denver Denver International | 13h 7m layover 8h 28m - Minneapolis | Allegiant Air | G41425 SY657 |
| from $162 | 08:52 Knoxville Mc Ghee Tyson | 07:16+1 день Denver Denver International | 24h 24m layover 9h 10m - Miami 7h 56m - Fletcher | Allegiant Air | G42120 G4254 G4233 |
| from $162 | 08:00 Knoxville Mc Ghee Tyson | 07:13+1 день Denver Denver International | 25h 13m layover 11h 36m - Fort Walton Beach 7h 23m - Covington | Allegiant Air | G41398 G4415 G4393 |
| from $164 | 12:45 Knoxville Mc Ghee Tyson | 07:16+1 день Denver Denver International | 20h 31m layover 2h 23m - Washington D.C. 11h 46m - Fletcher | Allegiant Air | G41397 G41855 G4233 |
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on August 08, 2025
Flight Schedule Knoxville (Tennessee) to Denver (Colorado)
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$257 |
|
|
10:00 — 11:08
|
10:00 — 11:08
G43031
Allegiant Air
Knoxville — Denver
|
3h 8m |
Find flight
from$90 |
|
|
15:46 — 16:51
|
15:46 — 16:51
G41419
Allegiant Air
Knoxville — Denver
|
3h 5m |
Find flight
from$95 |
|
|
15:54 — 16:57
|
15:54 — 16:57
G41438
Allegiant Air
Knoxville — Denver
|
3h 3m |
Find flight
from$66 |
|
|
15:54 — 16:57
|
15:54 — 16:57
G43029
Allegiant Air
Knoxville — Denver
|
3h 3m |
Find flight
from$69 |
|
|
15:56 — 16:59
|
15:56 — 16:59
G43058
Allegiant Air
Knoxville — Denver
|
3h 3m |
Find flight
from$146 |
|
|
16:35 — 17:50
|
16:35 — 17:50
UA1787
United Airlines
Knoxville — Denver
|
3h 15m |
Find flight
from$162 |
|
|
16:40 — 17:52
|
16:40 — 17:52
UA2745
United Airlines
Knoxville — Denver
|
3h 12m |
Find flight
from$165 |
|
|
16:40 — 17:52
|
16:40 — 17:52
UA1306
United Airlines
Knoxville — Denver
|
3h 12m |
Find flight
from$254 |
|
|
16:52 — 18:08
|
16:52 — 18:08
UA505
United Airlines
Knoxville — Denver
|
3h 16m |
Find flight
from$257 |
|
|
17:25 — 18:40
|
17:25 — 18:40
F94369
Frontier Airlines
Knoxville — Denver
|
3h 15m |
Find flight
from$78 |
|
|
06:20 — 17:27
|
06:20 — 07:44
G41425
Allegiant Air
Knoxville — Minneapolis
8h 28m stop
16:12 — 17:27
SY657
Sun Country Airlines
Minneapolis — Denver
|
13h 7m including layover |
Find flight
from$160 |
|
|
10:59 — 16:01
|
10:59 — 12:18
G43024
Allegiant Air
Knoxville — Minneapolis
2h 36m stop
14:54 — 16:01
SY655
Sun Country Airlines
Minneapolis — Denver
|
7h 2m including layover |
Find flight
from$156 |
|
|
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$111 |
|
|
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$118 |
|
|
06:00 — 07:16
+1 day
|
06:00 — 07:37
G43039
Allegiant Air
Knoxville — Orlando
13h 56m stop
21:33 — 23:23
G41844
Allegiant Air
Orlando — Fletcher
6h 37m stop
06:00 — 07:16
G4233
Allegiant Air
Fletcher — Denver
|
27h 16m including layover |
Find flight
from$168 |
|
|
07:00 — 07:10
+1 day
|
07:00 — 08:41
G43048
Allegiant Air
Knoxville — Clearwater
11h 34m stop
20:15 — 22:28
G4419
Allegiant Air
Clearwater — Covington
7h 47m stop
06:15 — 07:10
G4393
Allegiant Air
Covington — Denver
|
26h 10m including layover |
Find flight
from$169 |
|
|
07:30 — 07:13
+1 day
|
07:30 — 09:10
G43040
Allegiant Air
Knoxville — Clearwater
11h 16m stop
20:13 — 22:27
G4400
Allegiant Air
Clearwater — Covington
7h 35m stop
06:15 — 07:13
G4393
Allegiant Air
Covington — Denver
|
25h 43m including layover |
Find flight
from$165 |
|
|
08:00 — 07:13
+1 day
|
08:00 — 08:21
G41398
Allegiant Air
Knoxville — Fort Walton Beach
11h 36m stop
19:57 — 22:52
G4415
Allegiant Air
Fort Walton Beach — Covington
7h 23m stop
06:15 — 07:13
G4393
Allegiant Air
Covington — Denver
|
25h 13m including layover |
Find flight
from$162 |
|
|
08:52 — 07:16
+1 day
|
08:52 — 10:53
G42120
Allegiant Air
Knoxville — Miami
9h 10m stop
20:03 — 22:04
G4254
Allegiant Air
Miami — Fletcher
7h 56m stop
06:00 — 07:16
G4233
Allegiant Air
Fletcher — Denver
|
24h 24m including layover |
Find flight
from$162 |
|
|
09:02 — 17:54
|
09:02 — 10:51
G4865
Allegiant Air
Knoxville — Punta Gorda
1h 46m stop
12:37 — 14:25
G4857
Allegiant Air
Punta Gorda — Fletcher
2h 14m stop
16:39 — 17:54
G4227
Allegiant Air
Fletcher — Denver
|
10h 52m including layover |
Find flight
from$174 |
|
|
09:02 — 07:16
+1 day
|
09:02 — 10:51
G4865
Allegiant Air
Knoxville — Punta Gorda
1h 46m stop
12:37 — 14:25
G4857
Allegiant Air
Punta Gorda — Fletcher
15h 35m stop
06:00 — 07:16
G4233
Allegiant Air
Fletcher — Denver
|
24h 14m including layover |
Find flight
from$174 |
|
|
12:38 — 07:13
+1 day
|
12:38 — 14:18
G43041
Allegiant Air
Knoxville — Clearwater
6h 8m stop
20:26 — 22:40
G4400
Allegiant Air
Clearwater — Covington
7h 35m stop
06:15 — 07:13
G4393
Allegiant Air
Covington — Denver
|
20h 35m including layover |
Find flight
from$165 |
|
|
12:45 — 07:16
+1 day
|
12:45 — 14:23
G41397
Allegiant Air
Knoxville — Washington D.C.
2h 23m stop
16:46 — 18:14
G41855
Allegiant Air
Washington D.C. — Fletcher
11h 46m stop
06:00 — 07:16
G4233
Allegiant Air
Fletcher — Denver
|
20h 31m including layover |
Find flight
from$164 |
|
|
13:29 — 17:07
+1 day
|
13:29 — 14:03
G43062
Allegiant Air
Knoxville — Chicago
6h 33m stop
20:36 — 23:13
G4248
Allegiant Air
Chicago — Fletcher
16h 33m stop
15:46 — 17:07
G4233
Allegiant Air
Fletcher — Denver
|
29h 38m including layover |
Find flight
from$175 |
|
|
14:47 — 17:31
+1 day
|
14:47 — 16:51
G4487
Allegiant Air
Knoxville — Miami
3h 11m stop
20:02 — 22:03
G41863
Allegiant Air
Miami — Fletcher
18h 10m stop
16:13 — 17:31
G4252
Allegiant Air
Fletcher — Denver
|
28h 44m including layover |
Find flight
from$193 |
|
|
17:37 — 17:26
+1 day
|
17:37 — 18:10
G43026
Allegiant Air
Knoxville — Chicago
1h 54m stop
20:04 — 22:39
G4253
Allegiant Air
Chicago — Fletcher
17h 27m stop
16:06 — 17:26
G41841
Allegiant Air
Fletcher — Denver
|
25h 49m including layover |
Find flight
from$177 |
|
|
18:08 — 17:07
+1 day
|
18:08 — 19:47
G43040
Allegiant Air
Knoxville — Clearwater
12h 40m stop
08:27 — 10:03
G4261
Allegiant Air
Clearwater — Fletcher
5h 43m stop
15:46 — 17:07
G4233
Allegiant Air
Fletcher — Denver
|
24h 59m including layover |
Find flight
from$199 |
|
|
21:03 — 17:26
+1 day
|
21:03 — 23:07
G42125
Allegiant Air
Knoxville — Miami
9h 23m stop
08:30 — 10:31
G4502
Allegiant Air
Miami — Fletcher
5h 35m stop
16:06 — 17:26
G41841
Allegiant Air
Fletcher — Denver
|
22h 23m including layover |
Find flight
from$199 |
|
*Departure and arrival times - local. Updated on August 8, 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 66 $), august (from 69 $), may (from 72 $).
The most expensive months are december (from 369 $), february (from 324 $), january (from 324 $).
What is the lowest airfare Knoxville to Denver?
The cheapest plane ticket found by our users is $66. 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
$66
Business class
?
First class
?
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 United Airlines - 192 departures per week at the price of from $ 162 . And the most expensive tickets are offered by United Airlines airline - from $ 1017.
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 $66.
- UA - United Airlinesfrom $162Find
- F9 - Frontier Airlinesfrom $78Find
- G4 - Allegiant Airfrom $66Find
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 $111.
- UA - United Airlinesfrom $264Find
- G4 - Allegiant Airfrom $111Find
See more connecting flights
Airports
You can fly from Knoxville to Denver from 1 airports (Mc Ghee Tyson).
Knoxville airports
- Mc Ghee Tyson-TYSfrom $66Find
Denver airports
- Denver International-DENFind
- Arapahoe Co-APAFind
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.
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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.
- from $69Find
- from $61Find
How to book a plane 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.