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Cheap flights from Washington, D.C. 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. to Knoxville departing on 8/18. 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
3:13 pm - 4:47 pmIAD-TYS
1h 34mnonstop
Allegiant Air Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
$69Allegiant Air
Find Deal
Fri, Aug 15 - Mon, Aug 18
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, Aug 15 - Mon, Aug 25
American Airlines Logo
8:19 am - 10:06 amDCA-TYS
1h 47mnonstop
American Airlines Logo
6:25 am - 8:14 amTYS-DCA
1h 49mnonstop
$184American Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 13
United Airlines Logo
12:55 pm - 2:40 pmIAD-TYS
1h 45mnonstop
United Airlines Logo
5:45 am - 7:28 amTYS-IAD
1h 43mnonstop
$184United Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
Logo
8:30 am - 9:10 pmIAD-TYS
12h 40m1 stop
Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
$187
Find Deal
Fri, Aug 15 - Mon, Aug 18
Logo
8:30 am - 9:10 pmIAD-TYS
12h 40m1 stop
Logo
12:45 pm - 2:23 pmTYS-IAD
1h 38mnonstop
$188
Find Deal
Fri, Aug 15 - Mon, Aug 25
American Airlines Logo
8:15 pm - 10:01 pmDCA-TYS
1h 46mnonstop
American Airlines Logo
6:49 am - 8:36 amTYS-DCA
1h 47mnonstop
$189American Airlines
Find Deal
Fri, Aug 29 - Sun, Aug 31
United Airlines Logo
7:10 pm - 8:56 pmIAD-TYS
1h 46mnonstop
United Airlines Logo
9:55 am - 11:38 amTYS-IAD
1h 43mnonstop
$189United Airlines
Find Deal
Fri, Sep 5 - Sat, Sep 13
Delta Logo
6:00 am - 10:27 amIAD-TYS
4h 27m1 stop
Delta Logo
7:10 am - 11:23 amTYS-IAD
4h 13m1 stop
$204Delta
Find Deal
Sat, Aug 30 - Sat, Sep 6
Delta Logo
6:00 am - 10:27 amDCA-TYS
4h 27m1 stop
Delta Logo
10:50 am - 4:13 pmTYS-DCA
5h 23m1 stop
$204Delta
Find Deal
Sat, Aug 30 - Sat, Sep 13

American Airlines flights from Washington, D.C. to Knoxville

Our best American Airlines deals on Washington, D.C. to Knoxville flight tickets
American Airlines
Aug 30
DCA8:19 amWashington, D.C. Reagan-National
1h 47m
TYS10:06 amKnoxville McGhee Tyson
Sep 13
TYS6:25 amKnoxville McGhee Tyson
1h 49m
DCA8:14 amWashington, D.C. Reagan-National
$184
Find similar
American Airlines
Aug 29
DCA8:15 pmWashington, D.C. Reagan-National
1h 46m
TYS10:01 pmKnoxville McGhee Tyson
Aug 31
TYS6:49 amKnoxville McGhee Tyson
1h 47m
DCA8:36 amWashington, D.C. Reagan-National
$189
Find similar
American Airlines
Aug 15
DCA3:10 pmWashington, D.C. Reagan-National
1h 47m
TYS4:57 pmKnoxville McGhee Tyson
Aug 21
TYS6:13 amKnoxville McGhee Tyson
1h 46m
DCA7:59 amWashington, D.C. Reagan-National
$194
Find similar

United Airlines flights from Washington, D.C. to Knoxville

Our best United Airlines deals on Washington, D.C. to Knoxville flight tickets
United Airlines
Aug 30
IAD12:55 pmWashington, D.C. Dulles Intl
1h 45m
TYS2:40 pmKnoxville McGhee Tyson
Sep 6
TYS5:45 amKnoxville McGhee Tyson
1h 43m
IAD7:28 amWashington, D.C. Dulles Intl
$184
Find similar
United Airlines
Sep 5
IAD7:10 pmWashington, D.C. Dulles Intl
1h 46m
TYS8:56 pmKnoxville McGhee Tyson
Sep 13
TYS9:55 amKnoxville McGhee Tyson
1h 43m
IAD11:38 amWashington, D.C. Dulles Intl
$189
Find similar
United Airlines
Aug 30
IAD8:45 amWashington, D.C. Dulles Intl
1h 43m
TYS10:28 amKnoxville McGhee Tyson
Sep 13
TYS10:54 amKnoxville McGhee Tyson
4h 58m
1 stop
IAD3:52 pmWashington, D.C. Dulles Intl
$194
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 July 31, 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

Fri 8/15

3:13 pm-4:47 pm

Nonstop1h 34m

Knoxville McGhee Tyson

Mon 8/18

12:45 pm-2:23 pm

Nonstop1h 38m

$69

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 8/15

3:13 pm-4:47 pm

Nonstop1h 34m

Knoxville McGhee Tyson

Mon 8/25

12:45 pm-2:23 pm

Nonstop1h 38m

$80

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Sat 8/30

8:19 am-10:06 am

Nonstop1h 47m

Knoxville McGhee Tyson

Sat 9/13

6:25 am-8:14 am

Nonstop1h 49m

$184

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 8/30

12:55 pm-2:40 pm

Nonstop1h 45m

Knoxville McGhee Tyson

Sat 9/6

5:45 am-7:28 am

Nonstop1h 43m

$184

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 8/15

8:30 am-9:10 pm

1 stop12h 40m

Knoxville McGhee Tyson

Mon 8/18

12:45 pm-2:23 pm

Nonstop1h 38m

$187

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 8/15

8:30 am-9:10 pm

1 stop12h 40m

Knoxville McGhee Tyson

Mon 8/25

12:45 pm-2:23 pm

Nonstop1h 38m

$188

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Fri 8/29

8:15 pm-10:01 pm

Nonstop1h 46m

Knoxville McGhee Tyson

Sun 8/31

6:49 am-8:36 am

Nonstop1h 47m

$189

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 9/5

7:10 pm-8:56 pm

Nonstop1h 46m

Knoxville McGhee Tyson

Sat 9/13

9:55 am-11:38 am

Nonstop1h 43m

$189

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 8/30

6:00 am-10:27 am

1 stop4h 27m

Knoxville McGhee Tyson

Sat 9/6

7:10 am-11:23 am

1 stop4h 13m

$204

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Sat 8/30

6:00 am-10:27 am

1 stop4h 27m

Knoxville McGhee Tyson

Sat 9/13

10:50 am-4:13 pm

1 stop5h 23m

$204

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 June is, on average, the cheapest month to fly to Knoxville from Washington, D.C., with most prices found around $264. If you aren’t able to travel during the month of June, then book flights to Knoxville from Washington, D.C. during August instead. Flights to Knoxville in August, while not as cheap as those in June, still average around $271.

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 $289. 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 $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. to Knoxville when you can find flight prices for as low as $266. 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 $333 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 $213 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 July 2025, prices for Washington, D.C. to Knoxville flights are approximately 57% 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

$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. in the past 72 hours is $40. The best round-trip flight deal from Washington, D.C. to Knoxville found on momondo in the last 72 hours is $69.
The fastest flight from Washington, D.C. to Knoxville takes 1h 34m
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 34m 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 $38Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
DeltaPriceFrom $198Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $203Free 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 28 times per week, with 8,900 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 $372 for United Airlines flights on this route.

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

    $203 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 $335, 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. 14 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
Newport
Alcoa
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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