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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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — DEN
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Denver Intl are usually found in August or November, booked 62 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 August 14, 2025.

Round-trip from

$94
(Frontier)

One-way from

$54
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$218

Good round-trip deal

$209 or less

Good one-way deal

$133 or less
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. 4% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 14, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/48:40 pmTYS - DEN
Nonstop3h 09mFrontier
Sun 9/711:29 amDEN - TYS
Nonstop2h 49mFrontier
Deal found 8/13$95
This Gotogate deal was found by Cheapflights users on 8/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:00 amTYS - DEN
Nonstop3h 06mAllegiant Air
Thu 9/258:56 amDEN - TYS
Nonstop2h 47mAllegiant Air
Deal found 8/14$96
This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:17 pmTYS - DEN
Nonstop3h 22mFrontier
Sun 10/262:43 pmDEN - TYS
Nonstop2h 49mFrontier
Deal found 8/13$101
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/218:36 pmTYS - DEN
Nonstop3h 11mFrontier
Sun 8/242:52 pmDEN - TYS
Nonstop2h 49mFrontier
Deal found 8/13$104
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
Thu 10/27:00 amTYS - DEN
Nonstop3h 04mAllegiant Air
Sun 10/58:54 amDEN - TYS
Nonstop2h 39mAllegiant Air
Deal found 8/14$114
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
Thu 9/257:00 amTYS - DEN
Nonstop3h 06mAllegiant Air
Sun 9/288:56 amDEN - TYS
Nonstop2h 47mAllegiant Air
Deal found 8/14$120
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:00 amTYS - DEN
Nonstop3h 06mAllegiant Air
Sun 9/288:56 amDEN - TYS
Nonstop2h 47mAllegiant Air
Deal found 8/12$124
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Sun 9/287:00 amTYS - DEN
Nonstop3h 06mAllegiant Air
Sun 10/58:54 amDEN - TYS
Nonstop2h 39mAllegiant Air
Deal found 8/12$127
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Sun 9/147:00 amTYS - DEN
Nonstop3h 06mAllegiant Air
Thu 9/258:56 amDEN - TYS
Nonstop2h 47mAllegiant Air
Deal found 8/12$128
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/218:36 pmTYS - DEN
Nonstop3h 11mMultiple Airlines
Thu 8/2811:58 amDEN - TYS
Nonstop2h 45mMultiple Airlines
Deal found 8/13$129
This Priceline deal was found by Cheapflights users on 8/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/175:25 pmTYS - DEN
Nonstop3h 15mFrontier
Sun 8/242:52 pmDEN - TYS
Nonstop2h 49mFrontier
Deal found 8/13$132
This Priceline deal was found by Cheapflights users on 8/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:40 pmTYS - DEN
Nonstop3h 09mFrontier
Mon 9/222:59 pmDEN - TYS
Nonstop2h 46mFrontier
Deal found 8/14$134

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 August 14, 2025.
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

Thu 9/4

8:40 pm-9:49 pm

Nonstop3h 09m

Denver Intl

Sun 9/7

11:29 am-4:18 pm

Nonstop2h 49m

$95

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 9/7

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Thu 9/25

8:56 am-1:43 pm

Nonstop2h 47m

$96

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 9/18

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Sun 9/21

8:56 am-1:43 pm

Nonstop2h 47m

$96

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 10/2

7:00 am-8:04 am

Nonstop3h 04m

Denver Intl

Sun 10/5

8:54 am-1:33 pm

Nonstop2h 39m

$114

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 9/25

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Sun 9/28

8:56 am-1:43 pm

Nonstop2h 47m

$120

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 9/21

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Sun 9/28

8:56 am-1:43 pm

Nonstop2h 47m

$124

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 9/28

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Sun 10/5

8:54 am-1:33 pm

Nonstop2h 39m

$127

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 9/14

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Thu 9/25

8:56 am-1:43 pm

Nonstop2h 47m

$128

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 9/25

7:00 am-8:06 am

Nonstop3h 06m

Denver Intl

Sun 10/5

8:54 am-1:33 pm

Nonstop2h 39m

$128

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 10/26

7:00 am-8:04 am

Nonstop3h 04m

Denver Intl

Sun 11/2

8:54 am-1:33 pm

Nonstop2h 39m

$128

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 21 results
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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 August 8, 2025.

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 62 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, October is the cheapest month in which you can book a flight from Knoxville to Denver (average of $197). Flying from Knoxville to Denver in March is currently the most expensive (average of $278). 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 August 14, 2025.

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 at noon could potentially save you up to 78% on airfare.

What is the cheapest day to fly from Knoxville to Denver?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Denver. Price data was last updated on August 10, 2025.

Travelers seeking maximum savings on their Knoxville to Denver flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Knoxville to Denver?

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 August 14, 2025.
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
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
701 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,217 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 5 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 04m.

  • How popular is this Knoxville to Denver flight route?

    Flights from Knoxville McGhee Tyson to Denver Intl have been viewed 20 times in the past calendar month.

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

    According to our current data, Allegiant Air ($69), Frontier ($75), and American Airlines ($208) offers the cheapest pricing from Knoxville to Denver. Allegiant Air is currently priced 72% below the average price you’ll pay for this route.

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

    Consider SkyWest Airlines (93%), United Airlines (69%) or Frontier (41%) 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 $92. On average you can expect to pay $290. The most popular route, (Knoxville McGhee Tyson - Denver Intl), can usually be booked for $92.

  • 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, October is the cheapest month in which you can book a flight from Knoxville to Denver (average of $197). Flying from Knoxville to Denver in March is currently the most expensive (average of $278). 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
Westminster
Black Hawk
Golden
Winter Park
Greeley
Lone Tree
Lakewood
Cripple Creek
Silverthorne
Thornton
Broomfield
Frisco
Manitou Springs
Grand Lake
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Brighton
Longmont

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Alternative routes for Knoxville to Denver

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Top 5 airlines flying from Knoxville to Denver

Discover the top 5 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$69Average$143FlexibilityNo cancel feeOn-time88%
FrontierCheapest$75Average$158FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$208Average$294FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$229Average$426FlexibilityNo cancel feeOn-time69%
DeltaCheapest$248Average$311FlexibilityNo cancel feeOn-timeN/A

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