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Cheap flights from Washington, D.C. to Knoxville from $53

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. to Knoxville departing on 10/13. 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. to Knoxville

Cheap round-trip flights

Allegiant Air Logo
8:23 pm - 10:03 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:49 pm - 7:33 pmTYS-IAD
1h 44mnonstop
$86Allegiant Air
Find Deal
Thu, Nov 20 - Sun, Nov 23
Allegiant Air Logo
8:46 pm - 10:26 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:22 pm - 7:06 pmTYS-IAD
1h 44mnonstop
$89Allegiant Air
Find Deal
Fri, Nov 7 - Mon, Nov 10
Multiple Airlines Logo
11:12 am - 8:53 pmIAD-TYS
9h 41m1 stop
Multiple Airlines Logo
5:49 pm - 7:33 pmTYS-IAD
1h 44mnonstop
$167Multiple Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
Multiple Airlines Logo
8:30 am - 9:49 pmIAD-TYS
13h 19m1 stop
Multiple Airlines Logo
5:23 pm - 7:07 pmTYS-IAD
1h 44mnonstop
$171Multiple Airlines
Find Deal
Fri, Dec 5 - Sun, Dec 7
American Airlines Logo
1:59 pm - 3:48 pmDCA-TYS
1h 49mnonstop
American Airlines Logo
6:06 am - 7:49 amTYS-DCA
1h 43mnonstop
$189American Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
United Airlines Logo
8:45 am - 10:29 amIAD-TYS
1h 44mnonstop
United Airlines Logo
9:55 am - 11:39 amTYS-IAD
1h 44mnonstop
$189United Airlines
Find Deal
Wed, Oct 22 - Sat, Oct 25
American Airlines Logo
8:10 am - 10:01 amDCA-TYS
1h 51mnonstop
American Airlines Logo
7:53 pm - 9:30 pmTYS-DCA
1h 37mnonstop
$190American Airlines
Find Deal
Mon, Jan 12 - Wed, May 20
United Airlines Logo
12:59 pm - 2:45 pmIAD-TYS
1h 46mnonstop
United Airlines Logo
7:26 pm - 9:10 pmTYS-IAD
1h 44mnonstop
$194United Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
Delta Logo
6:05 am - 11:04 amIAD-TYS
4h 59m1 stop
Delta Logo
5:16 pm - 11:20 pmTYS-IAD
6h 04m1 stop
$209Delta
Find Deal
Wed, Oct 29 - Sat, Nov 1
Delta Logo
6:00 am - 12:03 pmDCA-TYS
6h 03m1 stop
Delta Logo
5:19 pm - 10:51 pmTYS-DCA
5h 32m1 stop
$209Delta
Find Deal
Tue, Oct 7 - Tue, Oct 14

Allegiant Air flights from Washington, D.C. to Knoxville

Our best Allegiant Air deals on Washington, D.C. 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
$86
Find similar
Allegiant Air
Nov 7
IAD8:46 pmWashington, D.C. Dulles Intl
1h 40m
TYS10:26 pmKnoxville McGhee Tyson
Nov 10
TYS5:22 pmKnoxville McGhee Tyson
1h 44m
IAD7:06 pmWashington, D.C. Dulles Intl
$89
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
$90
Find similar

Delta flights from Washington, D.C. to Knoxville

Our best Delta deals on Washington, D.C. to Knoxville flight tickets
Delta
Oct 7
DCA6:00 amWashington, D.C. Reagan-National
6h 03m
1 stop
TYS12:03 pmKnoxville McGhee Tyson
Oct 14
TYS5:19 pmKnoxville McGhee Tyson
5h 32m
1 stop
DCA10:51 pmWashington, D.C. Reagan-National
$209
Find similar
Delta
Oct 4
IAD5:25 pmWashington, D.C. Dulles Intl
6h 19m
1 stop
TYS11:44 pmKnoxville McGhee Tyson
Oct 7
TYS2:55 pmKnoxville McGhee Tyson
4h 31m
1 stop
IAD7:26 pmWashington, D.C. Dulles Intl
$214
Find similar
Delta
Oct 29
BWI8:05 amBaltimore/Washington
6h 38m
1 stop
TYS2:43 pmKnoxville McGhee Tyson
Nov 1
TYS3:43 pmKnoxville McGhee Tyson
5h 21m
1 stop
BWI9:04 pmBaltimore/Washington
$215
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 September 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. 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

$86

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 11/7

8:46 pm-10:26 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Mon 11/10

5:22 pm-7:06 pm

Nonstop1h 44m

$89

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 11/20

11:12 am-8:53 pm

1 stop9h 41m

Knoxville McGhee Tyson

Sun 11/23

5:49 pm-7:33 pm

Nonstop1h 44m

$167

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 12/5

8:30 am-9:49 pm

1 stop13h 19m

Knoxville McGhee Tyson

Sun 12/7

5:23 pm-7:07 pm

Nonstop1h 44m

$171

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Thu 11/20

1:59 pm-3:48 pm

Nonstop1h 49m

Knoxville McGhee Tyson

Sun 11/23

6:06 am-7:49 am

Nonstop1h 43m

$189

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 10/22

8:45 am-10:29 am

Nonstop1h 44m

Knoxville McGhee Tyson

Sat 10/25

9:55 am-11:39 am

Nonstop1h 44m

$189

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Mon 1/12

8:10 am-10:01 am

Nonstop1h 51m

Knoxville McGhee Tyson

Wed 5/20

7:53 pm-9:30 pm

Nonstop1h 37m

$190

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 10/4

12:59 pm-2:45 pm

Nonstop1h 46m

Knoxville McGhee Tyson

Sat 10/11

7:26 pm-9:10 pm

Nonstop1h 44m

$194

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 10/29

6:05 am-11:04 am

1 stop4h 59m

Knoxville McGhee Tyson

Sat 11/1

5:16 pm-11:20 pm

1 stop6h 04m

$209

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Tue 10/7

6:00 am-12:03 pm

1 stop6h 03m

Knoxville McGhee Tyson

Tue 10/14

5:19 pm-10:51 pm

1 stop5h 32m

$209

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. 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 August is, on average, the cheapest month to fly to Knoxville from Washington, D.C., with most prices found around $219. If you aren’t able to travel during the month of August, then book flights to Knoxville from Washington, D.C. during July instead. Flights to Knoxville in July, while not as cheap as those in August, still average around $249.

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

The cheapest day to depart from Washington, D.C. to Knoxville is on a Saturday. Travelers who choose to depart for Knoxville on a Saturday will often find tickets for as low as $286. 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. to Knoxville for around $373.

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. to Knoxville when you can find flight prices for as low as $251. 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 $346.

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

Fly from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson for the best Washington, D.C. - 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. when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $326 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. for as low as $103 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. 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.

Can stopping save me money on Washington, D.C. to Knoxville flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Knoxville.

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

As of September 2025, prices for Washington, D.C. to Knoxville flights are approximately 5% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Knoxville (WAS to TYS) flight deals and tips

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

Best Price Found

$97

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. in the past 72 hours is $97. The best round-trip flight deal from Washington, D.C. to Knoxville found on momondo in the last 72 hours is $140.
The fastest flight from Washington, D.C. to Knoxville takes 1h 40m
Direct flights go from Washington, D.C. to Knoxville every day.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)
Search flight deals

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

    A flight from Washington, D.C. to Knoxville McGhee Tyson will travel around 428.6 mi. Typically, this will take 1h 40m by plane in normal conditions.

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

    Prices for flights from Washington, D.C. to Knoxville McGhee Tyson Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Knoxville McGhee Tyson Airport.

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

    The travel and health documents you'll need for your trip to Knoxville McGhee Tyson 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 Knoxville McGhee Tyson 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 Washington, D.C. to Knoxville?

  • What is the most popular airline from Washington, D.C. to Knoxville?

Best airlines flying from Washington, D.C. to Knoxville

Compare and see reviews for airlines that fly from Washington, D.C. to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $42Free CancellationRating
7.2
699 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
DeltaPriceFrom $198Free CancellationRating
7.9
7,957 reviews
Search Delta flights
American AirlinesPriceFrom $199Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

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

    United Airlines flies from Washington, D.C. to Knoxville around 24 times per week, with 8,924 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Washington, D.C. to Knoxville in the last 72 hours was $189 (round-trip), much lower than the average airfare cost of $370 for United Airlines flights on this route.

  • American Airlines Flights From Washington, D.C. to Knoxville

    $199 is the best American Airlines flight deal from Washington, D.C. to Knoxville found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to $326, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 10,000 user reviews) flies into Knoxville from Washington, D.C. 19 times in an average week so prices can vary.

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
Newport
Lenoir City
Oak Ridge
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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Knoxville. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Knoxville from Washington, D.C. with this policy.

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?

Of course. momondo tracks the price of Washington, D.C. to Knoxville flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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