What is the cheapest airline that flies from Knoxville McGhee Tyson to Washington, D.C.?

Southwest, Delta, and Allegiant Air are the most popular carriers operating from Knoxville McGhee Tyson to Washington, D.C.

How many flights depart from Knoxville to Washington, D.C. on average per day?

As of May 2026, 18 flights take off from Knoxville and land in Washington, D.C. each day. The most common flight departure time for this route is 7:00PM, with 40% of daily flights taking off in the afternoon.

How many flights depart from Knoxville to Washington, D.C. on average per week?

The number of flights available between Knoxville and Washington, D.C. is 130 per week as of May 2026. The most frequent departure day is Sat, with 16% of weekly flights leaving on this day.

What airlines fly to Washington, D.C.?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Knoxville according to our data. American Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

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

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

There are 5 operators available for flights from Knoxville McGhee Tyson Airport to Washington, D.C. as of May 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$36 Cheap Flights from Knoxville to Washington, D.C. in 2026

Q: What is the typical price of a round-trip flight between Knoxville and Washington, D.C.?

Prices are currently low for flights on this route. Typical prices usually range from $290 to $188. The lowest price recently found on this route was $78.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Knoxville to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:49 pm - 2:16 pm

TYS

IAD

1h 27mnonstop

3:06 pm - 4:40 pm

IAD

TYS

1h 34mnonstop

$78Allegiant Air

Fri, Jun 5 - Fri, Jun 12

12:55 pm - 2:18 pm

TYS

IAD

1h 23mnonstop

3:08 pm - 4:40 pm

IAD

TYS

1h 32mnonstop

$80Allegiant Air

Fri, May 29 - Mon, Jun 1

12:55 pm - 2:18 pm

TYS

IAD

1h 23mnonstop

7:30 am - 9:50 pm

IAD

TYS

14h 20m

2 stops

$129Multiple Airlines

Mon, Jun 1 - Fri, Jun 12

12:40 pm - 11:09 pm

TYS

IAD

10h 29m

2 stops

3:06 pm - 4:40 pm

IAD

TYS

1h 34mnonstop

$131Multiple Airlines

Fri, Jun 5 - Fri, Jun 12

6:59 pm - 8:45 pm

TYS

DCA

1h 46mnonstop

9:00 am - 10:48 am

DCA

TYS

1h 48mnonstop

$187American Airlines

Wed, Jun 3 - Wed, Jun 10

7:32 am - 9:19 am

TYS

DCA

1h 47mnonstop

7:45 pm - 9:31 pm

DCA

TYS

1h 46mnonstop

$189American Airlines

Wed, Jun 3 - Sat, Jun 6

12:50 pm - 8:10 pm

TYS

BWI

7h 20m

1 stop

7:40 pm - 9:20 pm

BWI

TYS

1h 40mnonstop

$199Southwest

Wed, Jun 3 - Sat, Jun 6

8:00 am - 9:40 am

TYS

BWI

1h 40mnonstop

5:40 pm - 7:20 pm

BWI

TYS

1h 40mnonstop

$200Southwest

Tue, Aug 11 - Sat, Aug 22

7:33 pm - 11:44 pm

TYS

DCA

4h 11m

1 stop

6:15 pm - 11:56 pm

DCA

TYS

5h 41m

1 stop

$211Delta

Thu, May 28 - Mon, Jun 1

7:20 pm - 12:16 am

TYS

BWI

4h 56m

1 stop

2:10 pm - 6:17 pm

BWI

TYS

4h 07m

1 stop

$211Delta

Thu, Sep 24 - Sat, Sep 26

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

Our best United Airlines deals on Knoxville to Washington, D.C. flight tickets

United Airlines

Jun 3

TYS10:10 amKnoxville McGhee Tyson

1h 45m

IAD11:55 amWashington, D.C. Dulles Intl

Jun 6

IAD12:50 pmWashington, D.C. Dulles Intl

1h 37m

TYS2:27 pmKnoxville McGhee Tyson

$189

United Airlines

May 30

TYS5:45 amKnoxville McGhee Tyson

1h 45m

IAD7:30 amWashington, D.C. Dulles Intl

Jun 1

IAD12:50 pmWashington, D.C. Dulles Intl

1h 37m

TYS2:27 pmKnoxville McGhee Tyson

$191

United Airlines

May 22

TYS5:45 amKnoxville McGhee Tyson

1h 45m

IAD7:30 amWashington, D.C. Dulles Intl

May 24

IAD9:00 amWashington, D.C. Dulles Intl

1h 42m

TYS10:42 amKnoxville McGhee Tyson

$279

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

Our best Allegiant Air deals on Knoxville to Washington, D.C. flight tickets

Allegiant Air

Jun 5

TYS12:49 pmKnoxville McGhee Tyson

1h 27m

IAD2:16 pmWashington, D.C. Dulles Intl

Jun 12

IAD3:06 pmWashington, D.C. Dulles Intl

1h 34m

TYS4:40 pmKnoxville McGhee Tyson

$78

Allegiant Air

May 29

TYS12:55 pmKnoxville McGhee Tyson

1h 23m

IAD2:18 pmWashington, D.C. Dulles Intl

Jun 1

IAD3:08 pmWashington, D.C. Dulles Intl

1h 32m

TYS4:40 pmKnoxville McGhee Tyson

$80

Allegiant Air

May 29

TYS12:55 pmKnoxville McGhee Tyson

1h 23m

IAD2:18 pmWashington, D.C. Dulles Intl

Jun 5

IAD3:06 pmWashington, D.C. Dulles Intl

1h 34m

TYS4:40 pmKnoxville McGhee Tyson

$81

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 6/5

12:49 pm-2:16 pm

Nonstop1h 27m

Washington, D.C. Dulles Intl

Fri 6/12

3:06 pm-4:40 pm

Nonstop1h 34m

$78

Quickest round-trip

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 5/29

12:55 pm-2:18 pm

Nonstop1h 23m

Washington, D.C. Dulles Intl

Mon 6/1

3:08 pm-4:40 pm

Nonstop1h 32m

$80

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Mon 6/1

12:55 pm-2:18 pm

Nonstop1h 23m

Washington, D.C. Dulles Intl

Fri 6/12

7:30 am-9:50 pm

2 stops14h 20m

$129

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 6/5

12:40 pm-11:09 pm

2 stops10h 29m

Washington, D.C. Dulles Intl

Fri 6/12

3:06 pm-4:40 pm

Nonstop1h 34m

$131

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Wed 6/3

6:59 pm-8:45 pm

Nonstop1h 46m

Washington, D.C. Reagan-National

Wed 6/10

9:00 am-10:48 am

Nonstop1h 48m

$187

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Wed 6/3

7:32 am-9:19 am

Nonstop1h 47m

Washington, D.C. Reagan-National

Sat 6/6

7:45 pm-9:31 pm

Nonstop1h 46m

$189

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Wed 6/3

12:50 pm-8:10 pm

1 stop7h 20m

Baltimore/Washington

Sat 6/6

7:40 pm-9:20 pm

Nonstop1h 40m

$199

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Tue 8/11

8:00 am-9:40 am

Nonstop1h 40m

Baltimore/Washington

Sat 8/22

5:40 pm-7:20 pm

Nonstop1h 40m

$200

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Thu 5/28

7:33 pm-11:44 pm

1 stop4h 11m

Washington, D.C. Reagan-National

Mon 6/1

6:15 pm-11:56 pm

1 stop5h 41m

$211

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Thu 9/24

7:20 pm-12:16 am

1 stop4h 56m

Baltimore/Washington

Sat 9/26

2:10 pm-6:17 pm

1 stop4h 07m

$211

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Washington, D.C.

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

Prices

Airlines

Other information

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

What is the cheapest month to fly to Washington, D.C.?

The month of July is, on average, the cheapest month to fly to Washington, D.C. from Knoxville, with most prices found around $36. If you’re not able to fly to Washington, D.C. in July, then November is your next best option. Flight prices from Knoxville to Washington, D.C. during November average around $38.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Knoxville is on a Friday. momondo users have found tickets for Friday departures for as low as $360. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Knoxville to Washington, D.C. for around $694.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the afternoon is the cheapest time of day to fly from Knoxville to Washington, D.C. when you can find flight prices for as low as $290. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $817. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from Knoxville McGhee Tyson to Washington, D.C. Dulles Intl for the best Knoxville McGhee Tyson - Washington, D.C. flight prices

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

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

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

As of May 2026, prices for Knoxville to Washington, D.C. flights are approximately 38% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Washington, D.C. (TYS to WAS) flight deals and tips

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

Best Price Found	$46
Fastest flight time	1h 23m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from Knoxville in the past 72 hours is $46. The best round-trip flight deal from Knoxville to Washington, D.C. found on momondo in the last 72 hours is $257.

The fastest flight from Knoxville to Washington, D.C. takes 1h 23m

Direct flights go from Knoxville to Washington, D.C. every day.

There are 2 airports in Washington, D.C.. From Knoxville there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).

Search flight deals

Frequently asked questions about flying from Knoxville to Washington, D.C.

How far is Knoxville McGhee Tyson to Washington, D.C. by plane?
Washington, D.C. is 428.6 mi away from Knoxville McGhee Tyson. A reasonable flight in good conditions will take 1h 23m.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Washington, D.C.?
Prices for flights from Knoxville McGhee Tyson Airport to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Washington, D.C.?
There are 5 operators available for flights from Knoxville McGhee Tyson Airport to Washington, D.C. as of May 2026.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Knoxville to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from Knoxville to Washington, D.C. is Embraer ERJ-135 / ERJ-140 / ERJ-145, representing 23.82% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 900 at 21.24%, Canadair (Bombardier) Regional Jet 700 at 19.64%, and Airbus A320-100/200 at 14.27%.
What is the most popular airline from Knoxville to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Knoxville to Washington, D.C. is American Airlines (47% of total bookings). The next most popular airlines are United Airlines (27%), Allegiant Air (22%), and Southwest (4%).

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

Compare and see reviews for airlines that fly from Knoxville to Washington, D.C. with momondo

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $43	Free Cancellation	Rating 7.3 708 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,701 reviews	Search United Airlines flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,664 reviews	Search American Airlines flights
Southwest	PriceFrom $213	Free Cancellation	Rating 8.0 4,296 reviews	Search Southwest flights
Delta	PriceFrom $228	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights

United Airlines Flights From Knoxville to Washington, D.C.
United Airlines flies from Knoxville to Washington, D.C. around 19 times per week, with 9,701 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Knoxville to Washington, D.C. in the last 72 hours was $189 (round-trip), much lower than the average airfare cost of $298 for United Airlines flights on this route.
Allegiant Air Flights From Knoxville to Washington, D.C.
The best Allegiant Air deal for Knoxville to Washington, D.C. flight tickets found on momondo in the last 72 hours was $43, round-trip. It should be noted that an average Allegiant Air flight deal for this route in this time was higher, at $89 round-trip. Allegiant Air operates 1 flight out of Knoxville into Washington, D.C. in an average week, so prices vary by time and availability. 708 Allegiant Air reviews by users on momondo have scored the airline at 7.3/10.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Towson

Fredericksburg

Silver Spring

Rockville

Manassas

Linthicum Heights

Tysons

Bethesda

Springfield

Fairfax

College Park

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Washington, D.C.?

It is quick and easy to find Knoxville to Washington, D.C. 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 Washington, D.C. that suits you.

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

Yes. momondo allows you to filter the results for Knoxville to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Washington, D.C.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Knoxville.

I’m not ready to book a flight from Knoxville to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Wed 6/10

Wed 6/17

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Knoxville

Complete your trip

Feeling lucky

Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Knoxville to Washington, D.C. from $36

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Washington, D.C. departing on 7/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Knoxville to Washington, D.C.

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

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

Our best United Airlines deals on Knoxville to Washington, D.C. flight tickets

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

Our best Allegiant Air deals on Knoxville to Washington, D.C. flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Knoxville to Washington, D.C. that are best for you.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Knoxville to Washington, D.C.

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

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

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

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

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

What is the cheapest airline that flies from Knoxville McGhee Tyson to Washington, D.C.?

What airlines fly to Washington, D.C.?

How many flights depart from Knoxville to Washington, D.C. on average per day?

How many flights depart from Knoxville to Washington, D.C. on average per week?

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

Cheap Knoxville to Washington, D.C. (TYS to WAS) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying from Knoxville to Washington, D.C.

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

Compare and see reviews for airlines that fly from Knoxville to Washington, D.C. with momondo

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

Allegiant Air Flights From Knoxville to Washington, D.C.

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Knoxville

According to popular flight searches on momondo this year

Complete your trip to Washington, D.C.

Explore popular destinations other users love

According to popular flight searches on momondo this year