What airlines fly to Knoxville?

United Airlines, Allegiant Air and Delta are the top three most popular airlines that fly to Knoxville from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 4 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson?

Allegiant Air, United Airlines, and American Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?

Prices for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport were last updated today.

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?

As of September 2025, there are 2 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport.

What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

The required travel and health documents for your Knoxville McGhee Tyson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$41 Cheap Flights from Washington, D.C. Dulles Intl Airport to Knoxville in 2025

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Knoxville on average per week?

As of September 2025, there are 102 flights per week flying from Washington, D.C. Dulles Intl Airport to Knoxville. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Knoxville on average per day?

The number of flights available between Washington, D.C. Dulles Intl Airport and Knoxville is 14 per day as of September 2025. The most frequent departure time is 7:00PM, with 60% of daily flights leaving in the evening.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Knoxville

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

9:16 pm - 10:56 pmIAD-TYS

1h 40mnonstop

2:22 pm - 4:06 pmTYS-IAD

1h 44mnonstop

$84Allegiant Air

Find Deal

Fri, Nov 14 - Mon, Nov 17

9:36 pm - 11:16 pmIAD-TYS

1h 40mnonstop

6:23 pm - 8:07 pmTYS-IAD

1h 44mnonstop

$86Allegiant Air

Find Deal

Mon, Oct 20 - Fri, Oct 31

9:36 pm - 11:16 pmIAD-TYS

1h 40mnonstop

6:23 pm - 8:07 pmTYS-IAD

1h 44mnonstop

$89Allegiant Air

Find Deal

Mon, Oct 20 - Fri, Oct 31

8:23 pm - 10:03 pmIAD-TYS

1h 40mnonstop

5:49 pm - 7:33 pmTYS-IAD

1h 44mnonstop

$93Allegiant Air

Find Deal

Thu, Nov 20 - Sun, Nov 23

9:09 pm - 9:08 pmIAD-TYS

23h 59m1 stop

7:02 pm - 8:46 pmTYS-IAD

1h 44mnonstop

$134

Find Deal

Fri, Oct 3 - Fri, Oct 10

8:45 am - 10:29 amIAD-TYS

1h 44mnonstop

7:26 pm - 9:10 pmTYS-IAD

1h 44mnonstop

$139United Airlines

Find Deal

Sat, Oct 4 - Sat, Oct 11

7:14 pm - 8:40 amIAD-TYS

13h 26m1 stop

7:02 pm - 8:46 pmTYS-IAD

1h 44mnonstop

$147

Find Deal

Sat, Oct 4 - Fri, Oct 10

6:00 am - 10:28 amIAD-TYS

4h 28m1 stop

2:41 pm - 7:24 pmTYS-IAD

4h 43m1 stop

$177Delta

Find Deal

Sat, Oct 25 - Sat, Nov 1

9:00 am - 10:48 amIAD-TYS

1h 48mnonstop

5:45 am - 7:28 amTYS-IAD

1h 43mnonstop

$189United Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

6:05 am - 11:04 amIAD-TYS

4h 59m1 stop

8:10 pm - 12:12 amTYS-IAD

4h 02m1 stop

$193Delta

Find Deal

Sat, Oct 25 - Mon, Oct 27

United Airlines flights from Washington, D.C. Dulles Intl Airport to Knoxville

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Knoxville flight tickets

United Airlines

Oct 4

IAD8:45 amWashington, D.C. Dulles Intl

1h 44m

TYS10:29 amKnoxville McGhee Tyson

Oct 11

TYS7:26 pmKnoxville McGhee Tyson

1h 44m

IAD9:10 pmWashington, D.C. Dulles Intl

$139

Find similar

United Airlines

Nov 4

IAD9:00 amWashington, D.C. Dulles Intl

1h 48m

TYS10:48 amKnoxville McGhee Tyson

Nov 8

TYS5:45 amKnoxville McGhee Tyson

1h 43m

IAD7:28 amWashington, D.C. Dulles Intl

$189

Find similar

United Airlines

Sep 24

IAD7:10 pmWashington, D.C. Dulles Intl

1h 46m

TYS8:56 pmKnoxville McGhee Tyson

Sep 30

TYS7:26 pmKnoxville McGhee Tyson

1h 44m

IAD9:10 pmWashington, D.C. Dulles Intl

$194

Find similar

Allegiant Air flights from Washington, D.C. Dulles Intl Airport to Knoxville

Our best Allegiant Air deals on Washington, D.C. Dulles Intl Airport to Knoxville flight tickets

Allegiant Air

Nov 14

IAD9:16 pmWashington, D.C. Dulles Intl

1h 40m

TYS10:56 pmKnoxville McGhee Tyson

Nov 17

TYS2:22 pmKnoxville McGhee Tyson

1h 44m

IAD4:06 pmWashington, D.C. Dulles Intl

$84

Find similar

Allegiant Air

Oct 20

IAD9:36 pmWashington, D.C. Dulles Intl

1h 40m

TYS11:16 pmKnoxville McGhee Tyson

Oct 31

TYS6:23 pmKnoxville McGhee Tyson

1h 44m

IAD8:07 pmWashington, D.C. Dulles Intl

$86

Find similar

Allegiant Air

Oct 20

IAD9:36 pmWashington, D.C. Dulles Intl

1h 40m

TYS11:16 pmKnoxville McGhee Tyson

Oct 31

TYS6:23 pmKnoxville McGhee Tyson

1h 44m

IAD8:07 pmWashington, D.C. Dulles Intl

$89

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Knoxville that are best for you.

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Route

Depart

Return

Price

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 11/14

9:16 pm-10:56 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Mon 11/17

2:22 pm-4:06 pm

Nonstop1h 44m

$84

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Mon 10/20

9:36 pm-11:16 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Fri 10/31

6:23 pm-8:07 pm

Nonstop1h 44m

$86

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Mon 10/20

9:36 pm-11:16 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Fri 10/31

6:23 pm-8:07 pm

Nonstop1h 44m

$89

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 11/20

8:23 pm-10:03 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 11/23

5:49 pm-7:33 pm

Nonstop1h 44m

$93

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 10/3

9:09 pm-9:08 pm

1 stop23h 59m

Knoxville McGhee Tyson

Fri 10/10

7:02 pm-8:46 pm

Nonstop1h 44m

$134

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 10/4

8:45 am-10:29 am

Nonstop1h 44m

Knoxville McGhee Tyson

Sat 10/11

7:26 pm-9:10 pm

Nonstop1h 44m

$139

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 10/4

7:14 pm-8:40 am

1 stop13h 26m

Knoxville McGhee Tyson

Fri 10/10

7:02 pm-8:46 pm

Nonstop1h 44m

$147

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 10/25

6:00 am-10:28 am

1 stop4h 28m

Knoxville McGhee Tyson

Sat 11/1

2:41 pm-7:24 pm

1 stop4h 43m

$177

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Tue 11/4

9:00 am-10:48 am

Nonstop1h 48m

Knoxville McGhee Tyson

Sat 11/8

5:45 am-7:28 am

Nonstop1h 43m

$189

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 10/25

6:05 am-11:04 am

1 stop4h 59m

Knoxville McGhee Tyson

Mon 10/27

8:10 pm-12:12 am

1 stop4h 02m

$193

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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Knoxville

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 Knoxville?

The month of July is, on average, the cheapest month to fly to Knoxville from Washington, D.C. Dulles Intl Airport, with most prices found around $126. If you aren’t able to travel during the month of July, then book flights to Knoxville from Washington, D.C. Dulles Intl Airport during May instead. Flights to Knoxville in May, while not as cheap as those in July, still average around $200.

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

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Knoxville is on a Saturday. Travelers who choose to depart for Knoxville on a Saturday will often find tickets for as low as $291. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Knoxville for around $376.

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

In the afternoon is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Knoxville when you can find flight prices for as low as $250. Flying to Knoxville in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is at noon when prices are around $343.

What is the cheapest Washington, D.C. Dulles Intl to Knoxville McGhee Tyson flight route?

Fly from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson for the best Washington, D.C. Dulles Intl - Knoxville McGhee Tyson flight prices

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

You are more likely to see cheaper flights to Knoxville from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $334 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Washington, D.C. Dulles Intl Airport for as low as $116 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Knoxville McGhee Tyson flights?

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl to Knoxville McGhee Tyson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. Dulles Intl Airport to Knoxville flight prices changed over time?

As of September 2025, prices for Washington, D.C. Dulles Intl Airport to Knoxville flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Knoxville according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Knoxville (IAD to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Knoxville

Best Price Found	$97
Fastest flight time	1h 30m
Direct flights	Every day
Airports in Knoxville	1 airport

The best one-way flight to Knoxville from Washington, D.C. Dulles Intl Airport in the past 72 hours is $97. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Knoxville found on momondo in the last 72 hours is $100.

The fastest flight from Washington, D.C. Dulles Intl Airport to Knoxville takes 1h 30m

Direct flights go from Washington, D.C. Dulles Intl Airport to Knoxville every day.

There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)

Search flight deals

How far is Washington, D.C. Dulles Intl to Knoxville McGhee Tyson by plane?
A flight from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson will travel around 410.2 mi. A reasonable flight in good conditions will take 1h 40m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?
Prices for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?
As of September 2025, there are 2 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson 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 Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport.
What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?
The required travel and health documents for your Knoxville McGhee Tyson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Knoxville?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. Dulles Intl Airport to Knoxville is Embraer ERJ-135 / ERJ-140 / ERJ-145 (40.37% of total bookings). The next most popular plane models are Airbus A320-100/200 (22.94%), Canadair (Bombardier) Regional Jet 700 (19.95%), and Canadair (Bombardier) Regional Jet 900 (7.80%).
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Knoxville?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. Dulles Intl Airport to Knoxville is United Airlines, representing 79% of all bookings. The subsequent popular airline is Allegiant Air at 21%.

Best airlines flying from Washington, D.C. Dulles Intl Airport to Knoxville

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Knoxville with momondo

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $42	Free Cancellation	Rating 7.2 702 reviews		Search Allegiant Air flights
United Airlines	PriceFrom $232	Free Cancellation	Rating 7.4 8,937 reviews		Search United Airlines flights

United Airlines Flights From Washington, D.C. Dulles Intl Airport to Knoxville
United Airlines operates around 27 flights from Washington, D.C. Dulles Intl Airport to Knoxville every week. The average price of these flights found in the last 72 hours has been $385, but momondo users have found United Airlines deals from Washington, D.C. Dulles Intl Airport to Knoxville from as low as $232 round-trip. United Airlines has been scored 7.4/10 in 8,937 reviews.

Pigeon Forge

Gatlinburg

Cherokee

Bryson City

Morristown

Corbin

Crossville

Maryville

Murphy

Alcoa

Newport

Lenoir City

Oak Ridge

Kodak

Dandridge

Clinton

Jefferson City

Rockford

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Why should I use momondo to find a flight deal from Washington, D.C. to Knoxville?

It is quick and easy to find Washington, D.C. to Knoxville 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 Knoxville that suits you.

Can I find flights from Washington, D.C. to Knoxville with flexible booking policies on momondo?

momondo does allow users to show only those flights to Knoxville from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Knoxville?

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 Washington, D.C. to Knoxville.

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

Yes momondo offers price alerts on flights to Knoxville from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Washington, D.C. Dulles Intl Airport to Knoxville from $41

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United Airlines flights from Washington, D.C. Dulles Intl Airport to Knoxville

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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Knoxville

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 Knoxville?

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

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

What is the cheapest Washington, D.C. Dulles Intl to Knoxville McGhee Tyson flight route?

Fly from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson for the best Washington, D.C. Dulles Intl - Knoxville McGhee Tyson flight prices

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

What cabin class options are available on Washington, D.C. Dulles Intl to Knoxville McGhee Tyson flights?

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl to Knoxville McGhee Tyson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. Dulles Intl Airport to Knoxville flight prices changed over time?

As of September 2025, prices for Washington, D.C. Dulles Intl Airport to Knoxville flights are approximately 21% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson?

Allegiant Air, United Airlines, and American Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson

What airlines fly to Knoxville?

How many flights depart from Washington, D.C. Dulles Intl Airport to Knoxville on average per day?

The number of flights available between Washington, D.C. Dulles Intl Airport and Knoxville is 14 per day as of September 2025. The most frequent departure time is 7:00PM, with 60% of daily flights leaving in the evening.

How many flights depart from Washington, D.C. Dulles Intl Airport to Knoxville on average per week?

As of September 2025, there are 102 flights per week flying from Washington, D.C. Dulles Intl Airport to Knoxville. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.

When to book flights from Washington, D.C. Dulles Intl Airport to Knoxville

Cheap Washington, D.C. Dulles Intl Airport to Knoxville (IAD to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Knoxville

Best Price Found

Fastest flight time

Direct flights

Airports in Knoxville

How far is Washington, D.C. Dulles Intl to Knoxville McGhee Tyson by plane?

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Knoxville McGhee Tyson Airport?

What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Knoxville?

What is the most popular airline from Washington, D.C. Dulles Intl Airport to Knoxville?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Knoxville

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Knoxville with momondo

United Airlines Flights From Washington, D.C. Dulles Intl Airport to Knoxville

Traveling to a place near Knoxville?

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Knoxville?

Can I find flights from Washington, D.C. to Knoxville with flexible booking policies on momondo?

How can momondo help me find flights from Washington, D.C. to Knoxville?

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

An easier way to manage your Knoxville 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

Airports servicing Tennessee