$34 Find Cheap Flights from Knoxville to District of Columbia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to District of Columbia departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to District of Columbia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to District of Columbia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to District of Columbia, as well as popular online travel agencies
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Flight Deals

Book Cheap Knoxville to District of Columbia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to District of Columbia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to District of Columbia

Fri, May 22 - Mon, May 25
Allegiant Air Logo
12:55 pm - 2:18 pm
TYS
-
IAD
1h 23mnonstop
Allegiant Air Logo
3:08 pm - 4:40 pm
IAD
-
TYS
1h 32mnonstop
$80Allegiant Air
Fri, Jun 12 - Mon, Jun 15
Allegiant Air Logo
12:49 pm - 2:16 pm
TYS
-
IAD
1h 27mnonstop
Allegiant Air Logo
3:06 pm - 4:40 pm
IAD
-
TYS
1h 34mnonstop
$81Allegiant Air
Fri, May 22 - Mon, May 25
Allegiant Air Logo
12:55 pm - 2:18 pm
TYS
-
IAD
1h 23mnonstop
Allegiant Air Logo
3:08 pm - 4:40 pm
IAD
-
TYS
1h 32mnonstop
$84Allegiant Air
Fri, Jun 5 - Mon, Jun 8
Multiple Airlines Logo
12:49 pm - 2:16 pm
TYS
-
IAD
1h 27mnonstop
Multiple Airlines Logo
2:52 pm - 11:39 pm
IAD
-
TYS
8h 47m
2 stops
$132Multiple Airlines
Fri, Jun 5 - Mon, Jun 8
Multiple Airlines Logo
12:49 pm - 2:16 pm
TYS
-
IAD
1h 27mnonstop
Multiple Airlines Logo
7:27 pm - 3:55 pm
IAD
-
TYS
20h 28m
1 stop
$135Multiple Airlines
Thu, Jun 4 - Tue, Jun 9
American Airlines Logo
6:53 pm - 8:39 pm
TYS
-
DCA
1h 46mnonstop
American Airlines Logo
7:45 pm - 9:31 pm
DCA
-
TYS
1h 46mnonstop
$185American Airlines
Thu, May 28 - Mon, Jun 1
American Airlines Logo
6:53 pm - 8:39 pm
TYS
-
DCA
1h 46mnonstop
American Airlines Logo
9:00 am - 10:48 am
DCA
-
TYS
1h 48mnonstop
$191American Airlines
Tue, Aug 25 - Wed, Sep 2
Delta Logo
4:00 pm - 9:21 pm
TYS
-
DCA
5h 21m
1 stop
Delta Logo
1:45 pm - 6:17 pm
DCA
-
TYS
4h 32m
1 stop
$199Delta
Fri, Jun 5 - Mon, Jun 8
Frontier Logo
8:32 pm - 12:59 pm
TYS
-
DCA
16h 27m
1 stop
Frontier Logo
7:00 am - 7:33 pm
DCA
-
TYS
12h 33m
1 stop
$202Frontier
Thu, Jun 4 - Tue, Jun 9
Delta Logo
1:59 pm - 7:45 pm
TYS
-
DCA
5h 46m
1 stop
Delta Logo
7:30 pm - 11:54 pm
DCA
-
TYS
4h 24m
1 stop
$205Delta
Booking Insights

KAYAK's insights & trends for Knoxville to District of Columbia flights

Get data-powered insights and trends into flights from Knoxville to District of Columbia to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Knoxville to District of Columbia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to District of Columbia departing in May.

What is the cheapest Knoxville to District of Columbia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to District of Columbia from Knoxville found in the last 72 hours was to Washington, D.C., at $92 round-trip. The most popular route is from Knoxville (TYS) to Washington, D.C. Dulles Intl Airport (IAD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $92.

What is the cheapest time of day to fly to District of Columbia?

The average price for all round-trip flights from Knoxville to District of Columbia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to District of Columbia is generally in the evening, when round-trip flights cost $291 on average. Morning departures are around 24% more expensive than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally at night, which is peak travel time and where the average cost of a ticket is $807.

Can I save money by flying with a layover from Knoxville to District of Columbia?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $185, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Knoxville to District of Columbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to District of Columbia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to District of Columbia is July, when tickets cost $36 (return) on average. On the other hand, the most expensive months are September and December, when the average cost of round-trip tickets is $80 and $79 respectively.

What’s the cheapest day of the week to fly from Knoxville to District of Columbia?

The average price of all round-trip flights from Knoxville to District of Columbia clicked on KAYAK for each day over the last 12 months.

For Knoxville to District of Columbia, Friday is the cheapest day to fly on average and Saturday is the most expensive. Flying from District of Columbia back to Knoxville, the best deals are generally found on Thursday, with Saturday being the most expensive.

Good to know

Low seasonJanuary
Cheapest flight$34
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Knoxville to Washington Dulles Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from Knoxville to District of Columbia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Knoxville to District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to District of Columbia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Knoxville to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to District of Columbia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Knoxville to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to District of Columbia

  • Looking for a cheap flight? 25% of our users found tickets from Knoxville to the following destinations at these prices or less: Washington, D.C. $167 one-way - $244 round-trip; Washington, D.C. $123 one-way - $499 round-trip

Reviews of the top 4 airlines serving from Knoxville to District of Columbia

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to District of Columbia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to District of Columbia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4317 reviews
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

I liked that it was on time, however, the food was not good.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Fine not above and beyond as I had a connection that was delayed due to maintenance

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

It was great. Smooth flight, comfortable, left on time and landed on time.

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

Poor communication ahead of time about flight delays and old planes/other equipment.

Never going to fly your airline again if it can be avoided.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Other than nearly three hour delay for maintenance issues, everything went smooth

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

Everything you need to know for your flight from Knoxville to District of Columbia

Information on your arrival and departure airports