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$54+ Cheap flights from Knoxville to Denver (TYS - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — DEN
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Find cheap flights from Knoxville to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Denver Intl are usually found in November or May, booked 57 days in advance, depart on a Thursday or Sunday and return on a Thursday

Cheap flight deals from Knoxville to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$153
(Frontier)

One-way from

$54
(Frontier)

Popular in

January

Cheapest in

November

Average price

$318

Good round-trip deal

$271 or less

Good one-way deal

$128 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Denver Intl flights.
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From Knoxville McGhee Tyson to Denver Intl
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One-way flight from Knoxville McGhee Tyson to Denver Intl
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Highest demand for flights based on searches. 8% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Knoxville McGhee Tyson to Denver Intl.
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Price to beat on a one-way flight from Knoxville McGhee Tyson to Denver Intl.
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Find flight deals from Knoxville to Denver

Cheapest flights from Knoxville to Denver
Explore the most affordable flight options available from Knoxville to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This Frontier deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/138:12 pm
TYS
-
DEN
Nonstop3h 31m
Frontier
Fri 2/202:46 pm
DEN
-
TYS
Nonstop2h 41m
Frontier
Deal found 1/12$153
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/64:25 pm
TYS
-
DEN
Nonstop3h 32m
Frontier
Mon 2/910:50 am
DEN
-
TYS
Nonstop2h 45m
Frontier
Deal found 1/13$161
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/94:30 pm
TYS
-
DEN
Nonstop3h 32m
Multiple Airlines
Sat 2/141:33 pm
DEN
-
TYS
2 stops30h 52m
Multiple Airlines
Deal found 1/14$173
This Cheapflightsfares deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:20 pm
TYS
-
DEN
Nonstop3h 32m
Frontier
Mon 3/910:40 am
DEN
-
TYS
Nonstop2h 45m
Frontier
Deal found 1/14$188
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:12 pm
TYS
-
DEN
Nonstop3h 31m
Multiple Airlines
Sun 3/17:48 am
DEN
-
TYS
1 stop12h 19m
Multiple Airlines
Deal found 1/13$190
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/94:30 pm
TYS
-
DEN
Nonstop3h 32m
Multiple Airlines
Thu 2/127:00 am
DEN
-
TYS
2 stops13h 25m
Multiple Airlines
Deal found 1/13$191
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/225:56 pm
TYS
-
DEN
1 stop18h 26m
Multiple Airlines
Wed 2/256:20 pm
DEN
-
TYS
1 stop25h 51m
Multiple Airlines
Deal found 1/13$192
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/225:56 pm
TYS
-
DEN
1 stop18h 26m
Multiple Airlines
Sun 3/17:48 am
DEN
-
TYS
1 stop12h 19m
Multiple Airlines
Deal found 1/13$193
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:12 pm
TYS
-
DEN
Nonstop3h 31m
Multiple Airlines
Sat 2/287:00 am
DEN
-
TYS
1 stop26h 15m
Multiple Airlines
Deal found 1/13$201
This Kiwi.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:22 pm
TYS
-
DEN
1 stop22h 30m
Multiple Airlines
Fri 2/202:46 pm
DEN
-
TYS
Nonstop2h 41m
Multiple Airlines
Deal found 1/12$207
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/81:39 pm
TYS
-
DEN
1 stop22h 43m
Multiple Airlines
Thu 2/1211:37 am
DEN
-
TYS
1 stop8h 48m
Multiple Airlines
Deal found 1/13$210

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
Use the filters below to find and compare flights from Knoxville to Denver that are best for you.

Fly from

Knoxville

Fly to

Denver

Route

Depart

Return

Price

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Wed 2/4

8:55 am-10:35 am

Nonstop3h 40m

Denver Intl

Sat 2/14

11:59 pm-10:49 am

1 stop8h 50m

$239

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 3/5

7:25 pm-12:25 am

1 stop7h 00m

Denver Intl

Sun 3/8

5:30 am-1:55 pm

1 stop6h 25m

$249

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 3/13

5:24 pm-9:28 pm

1 stop6h 04m

Denver Intl

Wed 3/18

4:17 pm-11:51 pm

1 stop5h 34m

$249

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Wed 4/8

7:05 am-11:43 am

1 stop6h 38m

Denver Intl

Sat 4/11

3:15 pm-10:29 pm

1 stop5h 14m

$249

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Wed 3/11

12:30 pm-6:00 pm

1 stop7h 30m

Denver Intl

Mon 3/16

10:30 am-10:10 pm

2 stops9h 40m

$254

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 4/2

7:25 pm-12:25 am

1 stop7h 00m

Denver Intl

Mon 4/6

5:00 am-6:45 pm

1 stop11h 45m

$255

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 3/13

5:24 pm-9:28 pm

1 stop6h 04m

Denver Intl

Tue 3/17

7:30 am-4:12 pm

1 stop6h 42m

$269

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Mon 4/6

4:30 pm-5:56 pm

Nonstop3h 26m

Denver Intl

Sat 4/11

3:15 pm-10:29 pm

1 stop5h 14m

$273

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 3/20

6:30 am-9:50 am

1 stop5h 20m

Denver Intl

Sun 3/29

5:30 am-1:55 pm

1 stop6h 25m

$274

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 3/27

3:45 pm-9:50 pm

1 stop8h 05m

Denver Intl

Sat 4/4

7:20 am-6:35 pm

1 stop9h 15m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 23 results
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Compare providers for flights from Knoxville to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Denver in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Knoxville-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to Denver

How far ahead should I book a flight from Knoxville to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Denver. Price data was last updated on January 9, 2026.

The price you pay for your flight from Knoxville to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Knoxville to Denver?

Currently, August is the cheapest month in which you can book a flight from Knoxville to Denver (average of $59). Flying from Knoxville to Denver in May is currently the most expensive (average of $107). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TYS to DEN?

Find hourly flight availability from Knoxville to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 14, 2026.

One of the essential ways to save on airfare from Knoxville to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 56% on airfare.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated January 14, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Knoxville to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,040 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,040 reviews
Delta
7.9
Good
8,040 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,157 reviews
Delta
7.9
Good
8,040 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,122 reviews
Delta
7.9
Good
8,040 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Allegiant Air
7.2
Good
702 reviews
Delta
7.9
Good
8,040 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,056 reviews
Delta
7.9
Good
8,040 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Knoxville to Denver?

    You will need to book a flight from Knoxville McGhee Tyson to Denver Intl if you want to fly from Knoxville to Denver. At least 6 different airlines have flights from McGhee Tyson (TYS) to Denver Intl (DEN) on a regular basis. There are 2 flights to Denver from the Knoxville airport per day. If you manage to book one that is nonstop, then you can expect the flight time from TYS to DEN to be around 3h 18m.

  • How popular is this Knoxville to Denver flight route?

    Flights from Knoxville McGhee Tyson to Denver Intl have been viewed 27 times in the past calendar month.

  • How long is the flight from Knoxville to Denver?

    For as low as $239, United Airlines can have you in Denver from Knoxville in 3h 40m. The distance between Knoxville and Denver is about 1159 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Knoxville to Denver round-trip?

    According to our current data, Allegiant Air ($60), Frontier ($68), and Delta ($128) offers the cheapest pricing from Knoxville to Denver. Allegiant Air is currently priced 76% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Knoxville to Denver one-way?

    The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $54. However, be on the lookout for offers from Frontier and American Airlines, as they are both options that can get you from Knoxville to Denver for a low price.

  • What are the most reliable airlines from Knoxville to Denver?

    Consider Frontier (96%), SkyWest Airlines (90%) or United Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from Knoxville to Denver.

  • What are the cheapest flights from Knoxville to Denver?

    The cheapest flight price from Knoxville to Denver is $74. On average you can expect to pay $605. The most popular route, (Knoxville McGhee Tyson - Denver Intl), can usually be booked for $207.

  • Can I find deals for flights from Knoxville to Denver that include hotel bookings?

    Yes. In addition to deals on Knoxville to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Denver.

  • Can I find deals for business class flights from Knoxville to Denver?

    Yes. Cheapflights offers flight deals from Knoxville to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Denver?

    Currently, August is the cheapest month in which you can book a flight from Knoxville to Denver (average of $59). Flying from Knoxville to Denver in May is currently the most expensive (average of $107). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Greeley
Lone Tree
Wheat Ridge
Cripple Creek
Winter Park
Silverthorne
Central City
Centennial
Manitou Springs
Frisco
Fort Morgan
Brighton
Evergreen
Idaho Springs

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Top 6 airlines flying from Knoxville to Denver

Discover the top 6 airlines that operate flights from Knoxville to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$72Average$149FlexibilityNo cancel feeOn-time88%
FrontierCheapest$76Average$176FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$304FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$218Average$299FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$229Average$387FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$248Average$298FlexibilityNo cancel feeOn-time63%

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