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

United Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson

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 42% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 5 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.

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 March 2026, there are 3 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.

$35 Cheap Flights from Washington, D.C. Dulles Intl Airport to Knoxville in 2026

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 12 per day as of March 2026. The most frequent departure time is 5:00PM, with 69% of daily flights leaving in the afternoon.

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

As of March 2026, there are 84 flights per week flying from Washington, D.C. Dulles Intl Airport to Knoxville. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

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2:01 pm - 3:41 pm

IAD

TYS

1h 40mnonstop

11:27 am - 1:11 pm

TYS

IAD

1h 44mnonstop

$83Allegiant Air

Thu, Apr 9 - Sun, Apr 12

3:42 pm - 5:22 pm

IAD

TYS

1h 40mnonstop

1:21 pm - 3:05 pm

TYS

IAD

1h 44mnonstop

$85Allegiant Air

Sun, Mar 22 - Thu, Mar 26

2:01 pm - 3:41 pm

IAD

TYS

1h 40mnonstop

11:27 am - 1:11 pm

TYS

IAD

1h 44mnonstop

$86Allegiant Air

Sun, Apr 26 - Thu, Apr 30

2:01 pm - 3:41 pm

IAD

TYS

1h 40mnonstop

11:27 am - 1:11 pm

TYS

IAD

1h 44mnonstop

$87Allegiant Air

Sun, Apr 26 - Thu, Apr 30

3:42 pm - 5:22 pm

IAD

TYS

1h 40mnonstop

1:21 pm - 3:05 pm

TYS

IAD

1h 44mnonstop

$88Allegiant Air

Sun, Mar 22 - Thu, Mar 26

2:01 pm - 3:41 pm

IAD

TYS

1h 40mnonstop

11:27 am - 1:11 pm

TYS

IAD

1h 44mnonstop

$90Allegiant Air

Sun, May 3 - Thu, May 7

2:01 pm - 3:41 pm

IAD

TYS

1h 40mnonstop

11:27 am - 1:11 pm

TYS

IAD

1h 44mnonstop

$101Allegiant Air

Thu, Apr 23 - Sun, Apr 26

2:01 pm - 3:41 pm

IAD

TYS

1h 40mnonstop

11:27 am - 1:11 pm

TYS

IAD

1h 44mnonstop

$105Allegiant Air

Thu, Apr 23 - Sun, Apr 26

3:55 pm - 5:35 pm

IAD

TYS

1h 40mnonstop

6:39 pm - 8:23 pm

TYS

IAD

1h 44mnonstop

$123Allegiant Air

Thu, Mar 26 - Sun, Mar 29

3:55 pm - 5:35 pm

IAD

TYS

1h 40mnonstop

6:39 pm - 8:23 pm

TYS

IAD

1h 44mnonstop

$126Allegiant Air

Thu, Mar 26 - Sun, Mar 29

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

Apr 9

IAD2:01 pmWashington, D.C. Dulles Intl

1h 40m

TYS3:41 pmKnoxville McGhee Tyson

Apr 12

TYS11:27 amKnoxville McGhee Tyson

1h 44m

IAD1:11 pmWashington, D.C. Dulles Intl

$83

Allegiant Air

Mar 22

IAD3:42 pmWashington, D.C. Dulles Intl

1h 40m

TYS5:22 pmKnoxville McGhee Tyson

Mar 26

TYS1:21 pmKnoxville McGhee Tyson

1h 44m

IAD3:05 pmWashington, D.C. Dulles Intl

$85

Allegiant Air

Apr 26

IAD2:01 pmWashington, D.C. Dulles Intl

1h 40m

TYS3:41 pmKnoxville McGhee Tyson

Apr 30

TYS11:27 amKnoxville McGhee Tyson

1h 44m

IAD1:11 pmWashington, D.C. Dulles Intl

$86

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

Apr 4

IAD1:20 pmWashington, D.C. Dulles Intl

1h 49m

TYS3:09 pmKnoxville McGhee Tyson

Apr 8

TYS7:20 pmKnoxville McGhee Tyson

1h 45m

IAD9:05 pmWashington, D.C. Dulles Intl

$183

United Airlines

May 23

IAD12:50 pmWashington, D.C. Dulles Intl

1h 37m

TYS2:27 pmKnoxville McGhee Tyson

May 27

TYS5:45 amKnoxville McGhee Tyson

1h 45m

IAD7:30 amWashington, D.C. Dulles Intl

$195

United Airlines

Mar 18

IAD12:55 pmWashington, D.C. Dulles Intl

1h 55m

TYS2:50 pmKnoxville McGhee Tyson

Mar 21

TYS9:40 amKnoxville McGhee Tyson

1h 46m

IAD11:26 amWashington, D.C. Dulles Intl

$269

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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Price

Cheapest round-trip

Quickest round-trip

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 4/9

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 4/12

11:27 am-1:11 pm

Nonstop1h 44m

$83

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sun 3/22

3:42 pm-5:22 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Thu 3/26

1:21 pm-3:05 pm

Nonstop1h 44m

$85

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sun 4/26

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Thu 4/30

11:27 am-1:11 pm

Nonstop1h 44m

$86

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sun 4/26

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Thu 4/30

11:27 am-1:11 pm

Nonstop1h 44m

$87

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sun 3/22

3:42 pm-5:22 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Thu 3/26

1:21 pm-3:05 pm

Nonstop1h 44m

$88

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sun 5/3

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Thu 5/7

11:27 am-1:11 pm

Nonstop1h 44m

$90

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 4/23

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 4/26

11:27 am-1:11 pm

Nonstop1h 44m

$101

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 4/23

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 4/26

11:27 am-1:11 pm

Nonstop1h 44m

$105

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 3/26

3:55 pm-5:35 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 3/29

6:39 pm-8:23 pm

Nonstop1h 44m

$123

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 3/26

3:55 pm-5:35 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 3/29

6:39 pm-8:23 pm

Nonstop1h 44m

$126

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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 $189. 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 $194.

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 Friday. Travelers who choose to depart for Knoxville on a Friday will often find tickets for as low as $274. When flying out on a Monday, 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 $306.

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 $215. 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 in the morning when prices are around $317.

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 $290 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 $120 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 March 2026, prices for Washington, D.C. Dulles Intl Airport to Knoxville flights are approximately 51% cheaper 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	$60
Fastest flight time	1h 26m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
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 $60. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Knoxville found on momondo in the last 72 hours is $118.

The fastest flight from Washington, D.C. Dulles Intl Airport to Knoxville takes 1h 26m

Direct flights go from Washington, D.C. Dulles Intl Airport to Knoxville on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport in Knoxville. From Washington, D.C. Dulles Intl Airport there are direct flights to Knoxville McGhee Tyson (TYS).

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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 26m.
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 March 2026, there are 3 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 (38.95% of total bookings). The next most popular plane models are Airbus A320-100/200 (20.97%), Canadair (Bombardier) Regional Jet 700 (17.23%), and Canadair (Bombardier) Regional Jet 900 (14.04%).
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 66% of all bookings. The subsequent popular airlines are Allegiant Air at 31% and Delta at 3%.

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 7.3 714 reviews	Search Allegiant Air flights
Delta	PriceFrom $162	Free Cancellation	Rating 7.9 8,277 reviews	Search Delta flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,413 reviews	Search United Airlines flights

United Airlines Flights From Washington, D.C. Dulles Intl Airport to Knoxville
United Airlines operates around 21 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 $365, but momondo users have found United Airlines deals from Washington, D.C. Dulles Intl Airport to Knoxville from as low as $189 round-trip. United Airlines has been scored 7.4/10 in 9,413 reviews.

Pigeon Forge

Gatlinburg

Cherokee

Bryson City

Morristown

Corbin

Crossville

Maryville

Murphy

Alcoa

Oak Ridge

Lenoir City

Newport

Kodak

Dandridge

Jefferson City

Clinton

Rockford

Why use momondo?

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 $35

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Allegiant Air 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

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?

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?

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

What is the cheapest airline that flies 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?

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

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

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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

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