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

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 11/7. 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

Enter your travel dates to find the best prices.
Allegiant Air Logo
8:23 pm - 10:03 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:49 pm - 7:33 pmTYS-IAD
1h 44mnonstop
$95Allegiant Air
Find Deal
Thu, Nov 20 - Sun, Nov 23
Allegiant Air Logo
2:35 pm - 4:15 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
12:01 pm - 1:45 pmTYS-IAD
1h 44mnonstop
$98Allegiant Air
Find Deal
Wed, Dec 24 - Wed, Dec 31
Allegiant Air Logo
8:23 pm - 10:03 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:49 pm - 7:33 pmTYS-IAD
1h 44mnonstop
$101Allegiant Air
Find Deal
Thu, Nov 20 - Sun, Nov 23
Allegiant Air Logo
7:56 pm - 9:36 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
6:42 pm - 8:26 pmTYS-IAD
1h 44mnonstop
$107Allegiant Air
Find Deal
Mon, Nov 10 - Fri, Nov 14
Multiple Airlines Logo
9:58 pm - 4:47 pmIAD-TYS
18h 49m1 stop
Multiple Airlines Logo
1:39 pm - 3:23 pmTYS-IAD
1h 44mnonstop
$122Multiple Airlines
Find Deal
Mon, Jan 5 - Thu, Jan 8
Multiple Airlines Logo
8:23 pm - 10:03 pmIAD-TYS
1h 40mnonstop
Multiple Airlines Logo
12:59 pm - 7:45 amTYS-IAD
18h 46m1 stop
$139Multiple Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
United Airlines Logo
10:15 pm - 11:59 pmIAD-TYS
1h 44mnonstop
United Airlines Logo
2:25 pm - 4:08 pmTYS-IAD
1h 43mnonstop
$189United Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 23
United Airlines Logo
10:15 pm - 11:59 pmIAD-TYS
1h 44mnonstop
United Airlines Logo
2:25 pm - 4:08 pmTYS-IAD
1h 43mnonstop
$195United Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 23
Delta Logo
12:30 pm - 6:58 pmIAD-TYS
6h 28m1 stop
Delta Logo
5:40 am - 9:11 amTYS-IAD
3h 31m1 stop
$209Delta
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Wed, Dec 3 - Wed, Dec 10
Delta Logo
9:00 am - 2:48 pmIAD-TYS
5h 48m1 stop
Delta Logo
3:53 pm - 9:32 pmTYS-IAD
5h 39m1 stop
$224Delta
Find Deal
Sat, Nov 15 - Wed, Nov 19

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
Nov 21
IAD10:15 pmWashington, D.C. Dulles Intl
1h 44m
TYS11:59 pmKnoxville McGhee Tyson
Nov 23
TYS2:25 pmKnoxville McGhee Tyson
1h 43m
IAD4:08 pmWashington, D.C. Dulles Intl
$189
Find similar
United Airlines
Nov 21
IAD10:15 pmWashington, D.C. Dulles Intl
1h 44m
TYS11:59 pmKnoxville McGhee Tyson
Nov 23
TYS2:25 pmKnoxville McGhee Tyson
1h 43m
IAD4:08 pmWashington, D.C. Dulles Intl
$195
Find similar
United Airlines
Nov 12
IAD12:55 pmWashington, D.C. Dulles Intl
1h 48m
TYS2:43 pmKnoxville McGhee Tyson
Nov 15
TYS9:50 amKnoxville McGhee Tyson
1h 43m
IAD11:33 amWashington, D.C. Dulles Intl
$199
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 20
IAD8:23 pmWashington, D.C. Dulles Intl
1h 40m
TYS10:03 pmKnoxville McGhee Tyson
Nov 23
TYS5:49 pmKnoxville McGhee Tyson
1h 44m
IAD7:33 pmWashington, D.C. Dulles Intl
$95
Find similar
Allegiant Air
Dec 24
IAD2:35 pmWashington, D.C. Dulles Intl
1h 40m
TYS4:15 pmKnoxville McGhee Tyson
Dec 31
TYS12:01 pmKnoxville McGhee Tyson
1h 44m
IAD1:45 pmWashington, D.C. Dulles Intl
$98
Find similar
Allegiant Air
Nov 20
IAD8:23 pmWashington, D.C. Dulles Intl
1h 40m
TYS10:03 pmKnoxville McGhee Tyson
Nov 23
TYS5:49 pmKnoxville McGhee Tyson
1h 44m
IAD7:33 pmWashington, D.C. Dulles Intl
$101
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Knoxville 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 October 30, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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

$95

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 12/24

2:35 pm-4:15 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Wed 12/31

12:01 pm-1:45 pm

Nonstop1h 44m

$98

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

$101

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Mon 11/10

7:56 pm-9:36 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Fri 11/14

6:42 pm-8:26 pm

Nonstop1h 44m

$107

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Mon 1/5

9:58 pm-4:47 pm

1 stop18h 49m

Knoxville McGhee Tyson

Thu 1/8

1:39 pm-3:23 pm

Nonstop1h 44m

$122

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

12:59 pm-7:45 am

1 stop18h 46m

$139

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 11/21

10:15 pm-11:59 pm

Nonstop1h 44m

Knoxville McGhee Tyson

Sun 11/23

2:25 pm-4:08 pm

Nonstop1h 43m

$189

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 11/21

10:15 pm-11:59 pm

Nonstop1h 44m

Knoxville McGhee Tyson

Sun 11/23

2:25 pm-4:08 pm

Nonstop1h 43m

$195

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 12/3

12:30 pm-6:58 pm

1 stop6h 28m

Knoxville McGhee Tyson

Wed 12/10

5:40 am-9:11 am

1 stop3h 31m

$209

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 11/15

9:00 am-2:48 pm

1 stop5h 48m

Knoxville McGhee Tyson

Wed 11/19

3:53 pm-9:32 pm

1 stop5h 39m

$224

Flights are sorted by cheapest round-trip flights first.

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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 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 Friday. Travelers who choose to depart for Knoxville on a Friday will often find tickets for as low as $290. 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 $249. 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 $337.

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 $309 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 $103 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 October 2025, prices for Washington, D.C. Dulles Intl Airport to Knoxville flights are approximately 1% 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

$50

Fastest flight time

1h 40m

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 $50. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Knoxville found on momondo in the last 72 hours is $133.
The fastest flight from Washington, D.C. Dulles Intl Airport to Knoxville takes 1h 40m
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?

  • 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 $42Free CancellationRating
7.2
694 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $230Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

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

    United Airlines operates around 16 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 $373, but momondo users have found United Airlines deals from Washington, D.C. Dulles Intl Airport to Knoxville from as low as $230 round-trip. United Airlines has been scored 7.4/10 in 8,998 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
Maryville
Murphy
Alcoa
Oak Ridge
Lenoir City
Newport
Kodak
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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