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Cheap flights from Washington, D.C. to Knoxville from $54

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 5/29. 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

Enter your travel dates to find the best prices.
Allegiant Air Logo
2:01 pm - 3:41 pm
IAD
-
TYS
1h 40mnonstop
Allegiant Air Logo
11:27 am - 1:11 pm
TYS
-
IAD
1h 44mnonstop
$126Allegiant Air
Thu, Apr 23 - Sun, Apr 26
Allegiant Air Logo
2:01 pm - 3:41 pm
IAD
-
TYS
1h 40mnonstop
Allegiant Air Logo
11:27 am - 1:11 pm
TYS
-
IAD
1h 44mnonstop
$132Allegiant Air
Thu, Apr 30 - Sun, May 3
Multiple Airlines Logo
9:35 am - 10:28 pm
IAD
-
TYS
12h 53m1 stop
Multiple Airlines Logo
1:39 pm - 3:23 pm
TYS
-
IAD
1h 44mnonstop
$136Multiple Airlines
Fri, Jan 30 - Sun, Feb 1
Multiple Airlines Logo
9:58 pm - 4:47 pm
IAD
-
TYS
18h 49m1 stop
Multiple Airlines Logo
1:39 pm - 3:23 pm
TYS
-
IAD
1h 44mnonstop
$138Multiple Airlines
Mon, Jan 5 - Thu, Jan 8
Allegiant Air Logo
3:55 pm - 5:35 pm
IAD
-
TYS
1h 40mnonstop
Allegiant Air Logo
1:21 pm - 3:05 pm
TYS
-
IAD
1h 44mnonstop
$140Allegiant Air
Thu, Mar 26 - Sun, Mar 29
Multiple Airlines Logo
4:13 pm - 5:53 pm
IAD
-
TYS
1h 40mnonstop
Multiple Airlines Logo
6:18 pm - 9:08 am
TYS
-
IAD
14h 50m1 stop
$142Multiple Airlines
Thu, Jan 8 - Fri, Jan 9
American Airlines Logo
8:47 am - 10:49 am
DCA
-
TYS
2h 02mnonstop
American Airlines Logo
6:00 am - 7:46 am
TYS
-
DCA
1h 46mnonstop
$189American Airlines
Thu, Jan 8 - Sun, Jan 11
American Airlines Logo
2:54 pm - 4:38 pm
DCA
-
TYS
1h 44mnonstop
American Airlines Logo
2:17 pm - 3:59 pm
TYS
-
DCA
1h 42mnonstop
$204American Airlines
Tue, Dec 30 - Tue, Jan 6
Delta Logo
7:30 pm - 11:45 pm
DCA
-
TYS
4h 15m1 stop
Delta Logo
5:40 am - 9:10 am
TYS
-
DCA
3h 30m1 stop
$209Delta
Thu, Jan 8 - Sun, Jan 11
Delta Logo
8:45 am - 3:19 pm
BWI
-
TYS
6h 34m1 stop
Delta Logo
5:40 am - 11:55 am
TYS
-
BWI
6h 15m1 stop
$217Delta
Tue, Jan 20 - Thu, Jan 22

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

Our best Allegiant Air deals on Washington, D.C. to Knoxville flight tickets
Allegiant Air
Dec 27
IAD4:57 pmWashington, D.C. Dulles Intl
1h 40m
TYS6:37 pmKnoxville McGhee Tyson
Dec 31
TYS12:01 pmKnoxville McGhee Tyson
1h 44m
IAD1:45 pmWashington, D.C. Dulles Intl
$94
Find similar
Allegiant Air
Apr 23
IAD2:01 pmWashington, D.C. Dulles Intl
1h 40m
TYS3:41 pmKnoxville McGhee Tyson
Apr 26
TYS11:27 amKnoxville McGhee Tyson
1h 44m
IAD1:11 pmWashington, D.C. Dulles Intl
$126
Find similar
Allegiant Air
Apr 30
IAD2:01 pmWashington, D.C. Dulles Intl
1h 40m
TYS3:41 pmKnoxville McGhee Tyson
May 3
TYS11:27 amKnoxville McGhee Tyson
1h 44m
IAD1:11 pmWashington, D.C. Dulles Intl
$132
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
Jan 13
IAD12:55 pmWashington, D.C. Dulles Intl
1h 54m
TYS2:49 pmKnoxville McGhee Tyson
Jan 20
TYS2:25 pmKnoxville McGhee Tyson
1h 45m
IAD4:10 pmWashington, D.C. Dulles Intl
$189
Find similar
United Airlines
Jan 2
IAD10:10 pmWashington, D.C. Dulles Intl
1h 49m
TYS11:59 pmKnoxville McGhee Tyson
Jan 7
TYS9:30 amKnoxville McGhee Tyson
1h 51m
IAD11:21 amWashington, D.C. Dulles Intl
$204
Find similar
United Airlines
Jan 15
IAD12:55 pmWashington, D.C. Dulles Intl
1h 54m
TYS2:49 pmKnoxville McGhee Tyson
Jan 19
TYS7:20 pmKnoxville McGhee Tyson
1h 52m
IAD9:12 pmWashington, D.C. Dulles Intl
$229
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 December 18, 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 4/23

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 4/26

11:27 am-1:11 pm

Nonstop1h 44m

$126

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 4/30

2:01 pm-3:41 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 5/3

11:27 am-1:11 pm

Nonstop1h 44m

$132

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 1/30

9:35 am-10:28 pm

1 stop12h 53m

Knoxville McGhee Tyson

Sun 2/1

1:39 pm-3:23 pm

Nonstop1h 44m

$136

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

$138

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

1:21 pm-3:05 pm

Nonstop1h 44m

$140

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 1/8

4:13 pm-5:53 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Fri 1/9

6:18 pm-9:08 am

1 stop14h 50m

$142

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Thu 1/8

8:47 am-10:49 am

Nonstop2h 02m

Knoxville McGhee Tyson

Sun 1/11

6:00 am-7:46 am

Nonstop1h 46m

$189

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Tue 12/30

2:54 pm-4:38 pm

Nonstop1h 44m

Knoxville McGhee Tyson

Tue 1/6

2:17 pm-3:59 pm

Nonstop1h 42m

$204

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Thu 1/8

7:30 pm-11:45 pm

1 stop4h 15m

Knoxville McGhee Tyson

Sun 1/11

5:40 am-9:10 am

1 stop3h 30m

$209

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Tue 1/20

8:45 am-3:19 pm

1 stop6h 34m

Knoxville McGhee Tyson

Thu 1/22

5:40 am-11:55 am

1 stop6h 15m

$217

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 typical price of a round-trip flight between Washington, D.C. and Knoxville?

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 November instead. Flights to Knoxville in November, while not as cheap as those in August, still average around $239.

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 Wednesday. Travelers who choose to depart for Knoxville on a Wednesday will often find tickets for as low as $268. 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 $363.

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 $246. 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 $321.

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 $298 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 $113 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 December 2025, prices for Washington, D.C. to Knoxville flights are approximately 53% 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

$43

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 $43. The best round-trip flight deal from Washington, D.C. to Knoxville found on momondo in the last 72 hours is $141.
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 in Knoxville. From Washington, D.C. there are direct flights to 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 $51Free CancellationRating
7.2
700 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $187Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
American AirlinesPriceFrom $189Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
DeltaPriceFrom $208Free CancellationRating
7.9
8,005 reviews
Search Delta flights

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

    United Airlines flies from Washington, D.C. to Knoxville around 9 times per week, with 9,091 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 $187 (round-trip), much lower than the average airfare cost of $366 for United Airlines flights on this route.

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

    $189 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 $319, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 11,054 user reviews) flies into Knoxville from Washington, D.C. 8 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
Maryville
Crossville
Murphy
Alcoa
Oak Ridge
Newport
Lenoir City
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?

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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