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Cheap flights from Knoxville to Denver from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Denver departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Knoxville to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:25 pm - 5:57 pm
TYS
-
DEN
3h 32mnonstop
Frontier Logo
10:50 am - 3:35 pm
DEN
-
TYS
2h 45mnonstop
$182Frontier
Fri, Jan 30 - Mon, Feb 2
Frontier Logo
8:18 pm - 9:49 pm
TYS
-
DEN
3h 31mnonstop
Frontier Logo
10:50 am - 3:35 pm
DEN
-
TYS
2h 45mnonstop
$184Frontier
Sun, Jan 18 - Mon, Jan 26
Multiple Airlines Logo
7:26 pm - 12:19 pm
TYS
-
DEN
42h 53m2 stops
Multiple Airlines Logo
10:50 am - 3:35 pm
DEN
-
TYS
2h 45mnonstop
$187Multiple Airlines
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
4:23 pm - 5:54 pm
TYS
-
DEN
3h 31mnonstop
Frontier Logo
10:43 am - 3:28 pm
DEN
-
TYS
2h 45mnonstop
$190Frontier
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
1:39 pm - 10:22 am
TYS
-
DEN
22h 43m1 stop
Multiple Airlines Logo
10:50 am - 3:35 pm
DEN
-
TYS
2h 45mnonstop
$193Multiple Airlines
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
4:26 pm - 5:57 pm
TYS
-
DEN
3h 31mnonstop
Frontier Logo
10:43 am - 3:28 pm
DEN
-
TYS
2h 45mnonstop
$194Frontier
Sun, Jan 4 - Sun, Jan 11
Multiple Airlines Logo
6:00 am - 5:36 pm
TYS
-
DEN
13h 36m1 stop
Multiple Airlines Logo
10:50 am - 3:35 pm
DEN
-
TYS
2h 45mnonstop
$196Multiple Airlines
Mon, Jan 26 - Mon, Feb 2
Multiple Airlines Logo
1:39 pm - 10:22 am
TYS
-
DEN
22h 43m1 stop
Multiple Airlines Logo
7:35 am - 5:53 pm
DEN
-
TYS
8h 18m1 stop
$198Multiple Airlines
Sun, Jan 18 - Sun, Jan 25
Frontier Logo
8:18 pm - 9:49 pm
TYS
-
DEN
3h 31mnonstop
Frontier Logo
2:42 pm - 7:23 pm
DEN
-
TYS
2h 41mnonstop
$200Frontier
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
6:18 pm - 12:17 pm
TYS
-
DEN
19h 59m2 stops
Multiple Airlines Logo
10:50 am - 3:35 pm
DEN
-
TYS
2h 45mnonstop
$202Multiple Airlines
Fri, Jan 30 - Mon, Feb 2

Frontier flights from Knoxville to Denver

Our best Frontier deals on Knoxville to Denver flight tickets
Frontier
Dec 25
TYS4:26 pmKnoxville McGhee Tyson
3h 31m
DEN5:57 pmDenver Intl
Dec 30
DEN11:06 amDenver Intl
2h 45m
TYS3:51 pmKnoxville McGhee Tyson
$178
Find similar
Frontier
Jan 30
TYS4:25 pmKnoxville McGhee Tyson
3h 32m
DEN5:57 pmDenver Intl
Feb 2
DEN10:50 amDenver Intl
2h 45m
TYS3:35 pmKnoxville McGhee Tyson
$182
Find similar
Frontier
Jan 18
TYS8:18 pmKnoxville McGhee Tyson
3h 31m
DEN9:49 pmDenver Intl
Jan 26
DEN10:50 amDenver Intl
2h 45m
TYS3:35 pmKnoxville McGhee Tyson
$184
Find similar

Allegiant Air flights from Knoxville to Denver

Our best Allegiant Air deals on Knoxville to Denver flight tickets
Allegiant Air
Dec 24
TYS1:58 pmKnoxville McGhee Tyson
3h 13m
DEN3:11 pmDenver Intl
Dec 31
DEN4:01 pmDenver Intl
2h 38m
TYS8:39 pmKnoxville McGhee Tyson
$211
Find similar
Allegiant Air
Dec 24
TYS1:58 pmKnoxville McGhee Tyson
3h 13m
DEN3:11 pmDenver Intl
Dec 28
DEN8:33 amDenver Intl
2h 38m
TYS1:11 pmKnoxville McGhee Tyson
$239
Find similar
Allegiant Air
Dec 24
TYS1:58 pmKnoxville McGhee Tyson
3h 13m
DEN3:11 pmDenver Intl
Dec 28
DEN8:33 amDenver Intl
2h 38m
TYS1:11 pmKnoxville McGhee Tyson
$281
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Knoxville to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 1/30

4:25 pm-5:57 pm

Nonstop3h 32m

Denver Intl

Mon 2/2

10:50 am-3:35 pm

Nonstop2h 45m

$182

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 1/18

8:18 pm-9:49 pm

Nonstop3h 31m

Denver Intl

Mon 1/26

10:50 am-3:35 pm

Nonstop2h 45m

$184

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 1/22

7:26 pm-12:19 pm

2 stops42h 53m

Denver Intl

Mon 1/26

10:50 am-3:35 pm

Nonstop2h 45m

$187

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 1/8

4:23 pm-5:54 pm

Nonstop3h 31m

Denver Intl

Sun 1/11

10:43 am-3:28 pm

Nonstop2h 45m

$190

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 1/22

1:39 pm-10:22 am

1 stop22h 43m

Denver Intl

Mon 1/26

10:50 am-3:35 pm

Nonstop2h 45m

$193

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 1/4

4:26 pm-5:57 pm

Nonstop3h 31m

Denver Intl

Sun 1/11

10:43 am-3:28 pm

Nonstop2h 45m

$194

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Mon 1/26

6:00 am-5:36 pm

1 stop13h 36m

Denver Intl

Mon 2/2

10:50 am-3:35 pm

Nonstop2h 45m

$196

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sun 1/18

1:39 pm-10:22 am

1 stop22h 43m

Denver Intl

Sun 1/25

7:35 am-5:53 pm

1 stop8h 18m

$198

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 1/15

8:18 pm-9:49 pm

Nonstop3h 31m

Denver Intl

Sun 1/18

2:42 pm-7:23 pm

Nonstop2h 41m

$200

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 1/30

6:18 pm-12:17 pm

2 stops19h 59m

Denver Intl

Mon 2/2

10:50 am-3:35 pm

Nonstop2h 45m

$202

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Knoxville to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Knoxville is in November. Flight prices, which tend to average around $223, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in November, then you should wait until May to fly from Knoxville, when ticket prices are also cheap, with an average price of $233.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $256. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $546.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $217. Flights in the morning are often more expensive with an average ticket price of $486.

What is the cheapest Knoxville McGhee Tyson to Denver Intl flight route?

Fly from Knoxville McGhee Tyson to Denver Intl for the best Knoxville McGhee Tyson - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $261 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Knoxville for as low as $206 on momondo.

What cabin class options are available on Knoxville McGhee Tyson to Denver Intl flights?

There are 4 cabin classes available to choose from on Knoxville McGhee Tyson to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Knoxville to Denver flight prices changed over time?

As of December 2025, prices for Knoxville to Denver flights are approximately 30% cheaper when compared to flights at the same time last year.

When to book flights from Knoxville to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Denver (TYS to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Denver

Best Price Found

$106

Fastest flight time

3h 13m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Knoxville in the past 72 hours is $106. The best round-trip flight deal from Knoxville to Denver found on momondo in the last 72 hours is $233.
The fastest flight from Knoxville to Denver takes 3h 13m
Direct flights go from Knoxville to Denver every day.
There is 1 airport in Denver. From Knoxville there are direct flights to Denver Intl (DEN).
Search flight deals

  • How far is Knoxville McGhee Tyson to Denver Intl by plane?

    The distance between Knoxville McGhee Tyson and Denver Intl is about 1174.7 mi. A reasonable flight in good conditions will take 3h 13m.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Denver Intl Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Denver Intl Airport are updated daily.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Denver Intl Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Denver Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Knoxville McGhee Tyson Airport to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Knoxville to Denver?

  • What is the most popular airline from Knoxville to Denver?

Best airlines flying from Knoxville to Denver

Compare and see reviews for airlines that fly from Knoxville to Denver with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $72Free CancellationRating
7.2
701 reviews
Search Allegiant Air flights
FrontierPriceFrom $78Free CancellationRating
5.8
3,074 reviews
Search Frontier flights
American AirlinesPriceFrom $218Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $231Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,014 reviews
Search Delta flights

  • United Airlines Flights From Knoxville to Denver

    United Airlines is one of the most popular airlines flying from Knoxville to Denver, operating 14 flights/week on average for this route. A good United Airlines flight deal for Knoxville to Denver starts from $231 round-trip, up to an average price of $392. Our users have rated United Airlines at 7.4/10.

  • Frontier Flights From Knoxville to Denver

    Frontier (5.8/10 from 3,074 reviews) operates around 2 flights from Knoxville to Denver in any given week. The average Frontier airfare for this route is around $177, with deals from around $78 rare but found on momondo. Referenced prices are for round-trip Knoxville to Denver flight searches in the last 72 hours.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Manitou Springs
Longmont
Boulder
Greeley
Lakewood
Thornton
Westminster
Winter Park
Copper Mountain
Frisco
Silverthorne
Centennial
Grand Lake

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Denver?

It is quick and easy to find Knoxville to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

Can I find flights from Knoxville to Denver with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Denver from Knoxville with this policy.

How can momondo help me find flights from Knoxville to Denver?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Knoxville to Denver.

I’m not ready to book a flight from Knoxville to Denver right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Knoxville to Denver flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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