What airlines fly to Denver?

American Airlines, United Airlines and Allegiant Air are the top three most popular airlines that fly to Denver from Knoxville according to our data. American Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 5 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

How many flights depart from Knoxville to Denver on average per day?

As of August 2025, 2 flights take off from Knoxville and land in Denver each day. The most common flight departure time for this route is 9:00AM, with 56% of daily flights taking off in the afternoon.

How many flights depart from Knoxville to Denver on average per week?

As of August 2025, there are 14 flights per week flying from Knoxville to Denver. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Denver Intl?

Allegiant Air, Frontier, and Delta are the most popular carriers operating from Knoxville McGhee Tyson to Denver Intl

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?

The number of operators available for flights from Knoxville McGhee Tyson Airport to Denver Intl Airport is 5 as of August 2025.

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.

$54 Cheap Flights from Knoxville to Denver in 2025

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Cheap round-trip flights

7:00 am - 8:15 amTYS-DEN

3h 15mnonstop

9:05 am - 1:44 pmDEN-TYS

2h 39mnonstop

$88Allegiant Air

Find Deal

Thu, Nov 6 - Sun, Nov 9

7:00 am - 8:06 amTYS-DEN

3h 06mnonstop

8:56 am - 1:43 pmDEN-TYS

2h 47mnonstop

$92Allegiant Air

Find Deal

Thu, Sep 18 - Sun, Sep 21

5:25 pm - 6:40 pmTYS-DEN

3h 15mnonstop

11:41 am - 4:29 pmDEN-TYS

2h 48mnonstop

$113Frontier

Find Deal

Thu, Aug 14 - Sun, Aug 17

5:25 pm - 6:40 pmTYS-DEN

3h 15mnonstop

2:52 pm - 7:41 pmDEN-TYS

2h 49mnonstop

$122Frontier

Find Deal

Thu, Aug 14 - Sun, Aug 24

4:40 pm - 5:52 pmTYS-DEN

3h 12mnonstop

5:28 pm - 10:30 pmDEN-TYS

3h 02mnonstop

$199United Airlines

Find Deal

Thu, Sep 4 - Fri, Sep 5

3:13 pm - 9:03 pmTYS-DEN

7h 50m1 stop

11:59 pm - 9:56 amDEN-TYS

7h 57m1 stop

$213American Airlines

Find Deal

Mon, Sep 15 - Mon, Sep 15

4:49 pm - 10:16 pmTYS-DEN

7h 27m1 stop

11:59 pm - 9:56 amDEN-TYS

7h 57m1 stop

$219American Airlines

Find Deal

Wed, Sep 24 - Mon, Sep 29

7:50 am - 2:03 pmTYS-DEN

8h 13m1 stop

12:59 am - 10:25 amDEN-TYS

7h 26m1 stop

$237Delta

Find Deal

Sat, Sep 6 - Fri, Sep 12

4:40 pm - 5:52 pmTYS-DEN

3h 12mnonstop

10:00 am - 2:50 pmDEN-TYS

2h 50mnonstop

$244United Airlines

Find Deal

Tue, Aug 19 - Sat, Aug 23

7:16 pm - 12:15 amTYS-DEN

6h 59m1 stop

4:35 pm - 11:48 pmDEN-TYS

5h 13m1 stop

$249Delta

Find Deal

Fri, Aug 22 - Sat, Aug 23

Allegiant Air flights from Knoxville to Denver

Our best Allegiant Air deals on Knoxville to Denver flight tickets

Allegiant Air

Nov 6

TYS7:00 amKnoxville McGhee Tyson

3h 15m

DEN8:15 amDenver Intl

Nov 9

DEN9:05 amDenver Intl

2h 39m

TYS1:44 pmKnoxville McGhee Tyson

$88

Find similar

Allegiant Air

Sep 18

TYS7:00 amKnoxville McGhee Tyson

3h 06m

DEN8:06 amDenver Intl

Sep 21

DEN8:56 amDenver Intl

2h 47m

TYS1:43 pmKnoxville McGhee Tyson

$92

Find similar

Allegiant Air

Sep 14

TYS7:00 amKnoxville McGhee Tyson

3h 06m

DEN8:06 amDenver Intl

Sep 21

DEN8:56 amDenver Intl

2h 47m

TYS1:43 pmKnoxville McGhee Tyson

$96

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Frontier flights from Knoxville to Denver

Our best Frontier deals on Knoxville to Denver flight tickets

Frontier

Aug 14

TYS5:25 pmKnoxville McGhee Tyson

3h 15m

DEN6:40 pmDenver Intl

Aug 17

DEN11:41 amDenver Intl

2h 48m

TYS4:29 pmKnoxville McGhee Tyson

$113

Find similar

Frontier

Aug 14

TYS5:25 pmKnoxville McGhee Tyson

3h 15m

DEN6:40 pmDenver Intl

Aug 24

DEN2:52 pmDenver Intl

2h 49m

TYS7:41 pmKnoxville McGhee Tyson

$122

Find similar

Frontier

Oct 2

TYS8:40 pmKnoxville McGhee Tyson

3h 09m

DEN9:49 pmDenver Intl

Oct 5

DEN11:29 amDenver Intl

2h 49m

TYS4:18 pmKnoxville McGhee Tyson

$124

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Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 11/6

7:00 am-8:15 am

Nonstop3h 15m

Denver Intl

Sun 11/9

9:05 am-1:44 pm

Nonstop2h 39m

$88

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

$92

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 8/14

5:25 pm-6:40 pm

Nonstop3h 15m

Denver Intl

Sun 8/17

11:41 am-4:29 pm

Nonstop2h 48m

$113

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 8/14

5:25 pm-6:40 pm

Nonstop3h 15m

Denver Intl

Sun 8/24

2:52 pm-7:41 pm

Nonstop2h 49m

$122

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Thu 9/4

4:40 pm-5:52 pm

Nonstop3h 12m

Denver Intl

Fri 9/5

5:28 pm-10:30 pm

Nonstop3h 02m

$199

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Mon 9/15

3:13 pm-9:03 pm

1 stop7h 50m

Denver Intl

Mon 9/15

11:59 pm-9:56 am

1 stop7h 57m

$213

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Wed 9/24

4:49 pm-10:16 pm

1 stop7h 27m

Denver Intl

Mon 9/29

11:59 pm-9:56 am

1 stop7h 57m

$219

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Sat 9/6

7:50 am-2:03 pm

1 stop8h 13m

Denver Intl

Fri 9/12

12:59 am-10:25 am

1 stop7h 26m

$237

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Tue 8/19

4:40 pm-5:52 pm

Nonstop3h 12m

Denver Intl

Sat 8/23

10:00 am-2:50 pm

Nonstop2h 50m

$244

KnoxvilleDenver

TYS - DEN

TYSDEN

Knoxville McGhee Tyson

Fri 8/22

7:16 pm-12:15 am

1 stop6h 59m

Denver Intl

Sat 8/23

4:35 pm-11:48 pm

1 stop5h 13m

$249

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Knoxville is in August. Flight prices, which tend to average around $178, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in August, then you should wait until November to fly from Knoxville, when ticket prices are also cheap, with an average price of $203.

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 $250. 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 $632.

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 $112. Flights in the morning are often more expensive with an average ticket price of $480.

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 $244 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 $152 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 August 2025, prices for Knoxville to Denver flights are approximately 14% more expensive 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	$54
Fastest flight time	3h 04m
Direct flights	Mon, Tue, Wed, Fri, Sat and Sun
Airports in Denver	1 airport

The best one-way flight to Denver from Knoxville in the past 72 hours is $54. The best round-trip flight deal from Knoxville to Denver found on momondo in the last 72 hours is $88.

The fastest flight from Knoxville to Denver takes 3h 04m

Direct flights go from Knoxville to Denver on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines, Allegiant Air and Frontier.

There is 1 airport near Denver: 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 04m.
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?
The number of operators available for flights from Knoxville McGhee Tyson Airport to Denver Intl Airport is 5 as of August 2025.
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?
Based on momondo bookings for flights between Knoxville and Denver, the leading plane model is Airbus A320-100/200, making up 28.58% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 27.09%, Airbus A319 with 12.38%, and Airbus A321neo with 10.52%.
What is the most popular airline from Knoxville to Denver?
Based on momondo bookings for flights between Knoxville and Denver, the leading airline is United Airlines, making up 36% of the total bookings. Other popular airlines include Allegiant Air with 30%, Frontier with 17%, and American Airlines with 12%.

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 Air	PriceFrom $68	Free Cancellation	Rating 7.2 702 reviews	Search Allegiant Air flights
Frontier	PriceFrom $77	Free Cancellation	Rating 5.8 3,237 reviews	Search Frontier flights
American Airlines	PriceFrom $208	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $229	Free Cancellation	Rating 7.4 8,905 reviews	Search United Airlines flights
Delta	PriceFrom $248	Free Cancellation	Rating 8.0 7,985 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 $229 round-trip, up to an average price of $424. Our users have rated United Airlines at 7.4/10.

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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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Cheap flights from Knoxville to Denver from $54

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 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Allegiant Air flights from Knoxville to Denver

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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?

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 $250. 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 $632.

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 $112. Flights in the morning are often more expensive with an average ticket price of $480.

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?

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 August 2025, prices for Knoxville to Denver flights are approximately 14% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Denver Intl?

Allegiant Air, Frontier, and Delta are the most popular carriers operating from Knoxville McGhee Tyson to Denver Intl

What airlines fly to Denver?

How many flights depart from Knoxville to Denver on average per day?

As of August 2025, 2 flights take off from Knoxville and land in Denver each day. The most common flight departure time for this route is 9:00AM, with 56% of daily flights taking off in the afternoon.

How many flights depart from Knoxville to Denver on average per week?

As of August 2025, there are 14 flights per week flying from Knoxville to Denver. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

When to book flights from Knoxville to Denver

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

Fastest flight time

Direct flights

Airports in Denver

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

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

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?

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

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

United Airlines Flights From Knoxville to Denver

Traveling to a place near Denver?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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