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Cheap flights from Washington, D.C. Dulles Intl Airport to Knoxville from $40

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Knoxville departing on 5/26. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Knoxville

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Knoxville.
Allegiant Air Logo
3:13 pm - 4:47 pmIAD-TYS
1h 34mnonstop
Allegiant Air Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
$80Allegiant Air
Find Deal
Fri, Jun 6 - Fri, Jun 13
Allegiant Air Logo
3:13 pm - 4:47 pmIAD-TYS
1h 34mnonstop
Allegiant Air Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
$81Allegiant Air
Find Deal
Fri, Jun 6 - Fri, Jun 13
United Airlines Logo
12:55 pm - 2:33 pmIAD-TYS
1h 38mnonstop
United Airlines Logo
9:55 am - 11:36 amTYS-IAD
1h 41mnonstop
$189United Airlines
Find Deal
Sat, Jun 7 - Sat, Jun 14
United Airlines Logo
8:45 am - 10:27 amIAD-TYS
1h 42mnonstop
United Airlines Logo
5:45 am - 7:26 amTYS-IAD
1h 41mnonstop
$194United Airlines
Find Deal
Sun, Jun 22 - Wed, Jul 2
 Logo
3:13 pm - 8:17 amIAD-TYS
17h 04m2 stops
 Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
Fri, Jun 27 - Mon, Jun 30
Delta Logo
6:00 am - 11:07 amIAD-TYS
5h 07m1 stop
Delta Logo
7:07 am - 12:00 pmTYS-IAD
4h 53m1 stop
$209Delta
Find Deal
Wed, Jul 16 - Tue, Jul 22
Delta Logo
6:00 am - 9:40 amIAD-TYS
3h 40m1 stop
Delta Logo
6:10 pm - 10:54 pmTYS-IAD
4h 44m1 stop
$219Delta
Find Deal
Thu, May 8 - Mon, May 12
 Logo
12:49 pm - 11:42 amIAD-TYS
22h 53m1 stop
 Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
Thu, May 22 - Mon, May 26
American Airlines Logo
5:02 am - 8:24 amIAD-TYS
3h 22m1 stop
American Airlines Logo
7:54 pm - 12:02 amTYS-IAD
4h 08m1 stop
$260American Airlines
Find Deal
Mon, May 19 - Tue, May 27
American Airlines Logo
9:11 am - 3:40 pmIAD-TYS
6h 29m1 stop
American Airlines Logo
7:54 pm - 12:02 amTYS-IAD
4h 08m1 stop
$275American Airlines
Find Deal
Sun, May 25 - Tue, May 27

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Knoxville flight tickets
American Airlines
May 19
IAD5:02 amWashington, D.C. Dulles Intl
3h 22m
1 stop
TYS8:24 amKnoxville McGhee Tyson
May 27
TYS7:54 pmKnoxville McGhee Tyson
4h 08m
1 stop
IAD12:02 amWashington, D.C. Dulles Intl
American Airlines
May 25
IAD9:11 amWashington, D.C. Dulles Intl
6h 29m
1 stop
TYS3:40 pmKnoxville McGhee Tyson
May 27
TYS7:54 pmKnoxville McGhee Tyson
4h 08m
1 stop
IAD12:02 amWashington, D.C. Dulles Intl
American Airlines
Oct 2
IAD2:09 pmWashington, D.C. Dulles Intl
3h 21m
1 stop
TYS5:30 pmKnoxville McGhee Tyson
Oct 4
TYS2:37 pmKnoxville McGhee Tyson
4h 57m
1 stop
IAD7:34 pmWashington, D.C. Dulles Intl

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
Jun 7
IAD12:55 pmWashington, D.C. Dulles Intl
1h 38m
TYS2:33 pmKnoxville McGhee Tyson
Jun 14
TYS9:55 amKnoxville McGhee Tyson
1h 41m
IAD11:36 amWashington, D.C. Dulles Intl
United Airlines
Jun 22
IAD8:45 amWashington, D.C. Dulles Intl
1h 42m
TYS10:27 amKnoxville McGhee Tyson
Jul 2
TYS5:45 amKnoxville McGhee Tyson
1h 41m
IAD7:26 amWashington, D.C. Dulles Intl
United Airlines
Jun 10
IAD5:18 pmWashington, D.C. Dulles Intl
5h 22m
1 stop
TYS10:40 pmKnoxville McGhee Tyson
Jun 19
TYS5:45 amKnoxville McGhee Tyson
1h 41m
IAD7:26 amWashington, D.C. Dulles Intl

See travel insights to Knoxville from

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?

The month of May is, on average, the cheapest month to fly to Knoxville from Washington, D.C. Dulles Intl Airport, with most prices found around $292. If you aren’t able to travel during the month of May, then book flights to Knoxville from Washington, D.C. Dulles Intl Airport during August instead. Flights to Knoxville in August, while not as cheap as those in May, still average around $319.

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 Wednesday. Travelers who choose to depart for Knoxville on a Wednesday will often find tickets for as low as $308. When flying out on a Friday, 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 $360.

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 $320. 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 $345.

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 13 weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $377 when searching 13 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 $195 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 April 2025, prices for Washington, D.C. Dulles Intl Airport to Knoxville flights are approximately 24% 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

$40

Fastest flight time

1h 34m

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 $40. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Knoxville found on momondo in the last 72 hours is $80.
The fastest flight from Washington, D.C. Dulles Intl Airport to Knoxville takes 1h 34m
Direct flights go from Washington, D.C. Dulles Intl Airport to Knoxville every day.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)

  • 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 34m.

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $52Free CancellationRating
7.3
734 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $239Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Knoxville

    United Airlines operates around 25 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 $380, but momondo users have found United Airlines deals from Washington, D.C. Dulles Intl Airport to Knoxville from as low as $239 round-trip. United Airlines has been scored 7.4/10 in 8,685 reviews.


Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Crossville
Murphy
Maryville
Newport
Alcoa
Oak Ridge
Kodak
Lenoir City
Dandridge
Clinton
Jefferson City
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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