TYS - WAS

$38 Find Cheap Flights from Knoxville to Washington, D.C.

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 Washington, D.C. departing on 3/26. 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 Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Washington, D.C., 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 Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$83
Overall average: $279
Allegiant Air
tor. 4/9tor. 4/16
TYS - IAD • Non-stop
Cheapest one-way
$38
Typical prices: $60-$225
Allegiant Air
tor. 3/26
TYS - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
American's Main Cabin Extra offers early boarding.
United's Economy Plus provides extra legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $86 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines, United Airlines and Allegiant Air. Average duration is 1h 43m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 68% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $208 (round-trip)
Shortest trip • 3h 19m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
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+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Knoxville to Washington, D.C. (TYS-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Washington, D.C. 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 Washington, D.C.

tor., apr. 9 - tor., apr. 16
Allegiant Air Logo
11:27 am - 1:11 pm
TYS
-
IAD
1h 44mnonstop
Allegiant Air Logo
2:01 pm - 3:41 pm
IAD
-
TYS
1h 40mnonstop
$83Allegiant Air
fre., maj 22 - man., maj 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
$86Allegiant Air
søn., mar. 29 - tor., apr. 16
Allegiant Air Logo
6:39 pm - 8:23 pm
TYS
-
IAD
1h 44mnonstop
Allegiant Air Logo
2:01 pm - 3:41 pm
IAD
-
TYS
1h 40mnonstop
$94Allegiant Air
søn., mar. 29 - søn., apr. 5
Allegiant Air Logo
6:39 pm - 8:23 pm
TYS
-
IAD
1h 44mnonstop
Allegiant Air Logo
12:56 pm - 2:36 pm
IAD
-
TYS
1h 40mnonstop
$97Allegiant Air
tor., apr. 2 - søn., apr. 5
Allegiant Air Logo
8:20 am - 10:04 am
TYS
-
IAD
1h 44mnonstop
Allegiant Air Logo
12:56 pm - 2:36 pm
IAD
-
TYS
1h 40mnonstop
$98Allegiant Air
ons., apr. 29 - lør., maj 2
American Airlines Logo
6:00 am - 7:42 am
TYS
-
DCA
1h 42mnonstop
American Airlines Logo
7:59 pm - 9:50 pm
DCA
-
TYS
1h 51mnonstop
$173American Airlines
lør., maj 2 - tir., maj 5
Southwest Logo
7:45 am - 9:30 am
TYS
-
BWI
1h 45mnonstop
Southwest Logo
7:05 pm - 8:50 pm
BWI
-
TYS
1h 45mnonstop
$173Southwest
ons., apr. 22 - søn., apr. 26
American Airlines Logo
12:01 pm - 1:44 pm
TYS
-
DCA
1h 43mnonstop
American Airlines Logo
9:15 am - 11:01 am
DCA
-
TYS
1h 46mnonstop
$180American Airlines
lør., apr. 18 - man., apr. 20
Southwest Logo
7:45 am - 9:30 am
TYS
-
BWI
1h 45mnonstop
Southwest Logo
7:30 pm - 9:15 pm
BWI
-
TYS
1h 45mnonstop
$183Southwest
tor., apr. 16 - lør., apr. 18
Frontier Logo
4:28 pm - 4:59 pm
TYS
-
DCA
24h 31m
1 stop
Frontier Logo
6:00 pm - 3:33 pm
DCA
-
TYS
21h 33m
1 stop
$191Frontier
Booking Insights

KAYAK's insights & trends for Knoxville to Washington, D.C. flights

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

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

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

The absolute cheapest return flight from Knoxville to Washington, D.C. costs $55 on the route between Knoxville (TYS) and Washington, D.C. Dulles Intl Airport (IAD). However, over the past month, flights between Knoxville (TYS) and Baltimore (BWI) were, on average, 68% cheaper than other Knoxville-Washington, D.C. routes. The most popular route is between Knoxville (TYS) and Washington, D.C. Dulles Intl Airport (IAD).

What’s the cheapest day of the week to fly from Knoxville to Washington, D.C.?

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

When flying from Knoxville to Washington, D.C., you should consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to Knoxville, you’ll find the best rates on Fridays and the most expensive ones on Saturdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Washington, D.C., 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 Washington, D.C. is January, where tickets cost $189 (return) on average. On the other hand, the most expensive months are September and August, where the average cost of round-trip tickets is $331 and $291 respectively.

Can I save money by flying with a layover from Knoxville to Washington, D.C.?

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 $251, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Knoxville to Washington, D.C.?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Knoxville to Washington, D.C., you should book around 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Expert advice

Expert advice for your flight from Knoxville to Washington, D.C.

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonJanuary
Cheapest flight$38
Best time to beat the crowds with an average 23% drop in price.
Flight from Knoxville to Washington Dulles Airport

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

Are your dates flexible? Find out the best times to travel from Knoxville to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Knoxville to Washington, D.C.

  • What is the cheapest flight from Knoxville to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Knoxville to Washington, D.C. was $38 for a one-way ticket and $86 for a round-trip.

  • Do I need a passport to fly between Knoxville and Washington, D.C.?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Knoxville to Washington, D.C.?

    When flying out of Knoxville you will be using Knoxville McGhee Tyson. You will be landing at one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Knoxville to Washington, D.C.?

    American Airlines, Delta, Hawaiian Airlines, and Virgin Atlantic offer inflight Wi-Fi service on the Knoxville to Washington, D.C. flight route.

  • Which aircraft models fly most regularly from Knoxville to Washington, D.C.?

    The Embraer ERJ-135 / ERJ-140 / ERJ-145 is the aircraft model that flies most regularly on the Knoxville to Washington, D.C. flight route.

  • Which airline alliances offer flights from Knoxville to Washington, D.C.?

    Star Alliance, and oneworld are the airline alliances operating flights between Knoxville and Washington, D.C., with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Knoxville to Washington, D.C.?

    There are nonstop flights from Knoxville to Washington, D.C. on a daily basis.

  • Which is the best airline for flights from Knoxville to Washington, D.C., Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Knoxville to Washington, D.C. are Southwest and United Airlines. With an average price for the route of $267 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $259 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Knoxville to Washington, D.C.?

    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 Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Knoxville 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 Washington, D.C.?

    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 to Washington, D.C. with an airline and back to Knoxville with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to Washington, D.C.?

    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 to Washington, D.C. from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Knoxville to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $183 or less one-way and $298 or less round-trip.

Prefer to fly direct from Knoxville to Washington, D.C.?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Knoxville McGhee Tyson to Washington, D.C..
Find which airlines fly direct from Knoxville McGhee Tyson Airport to Washington, D.C., which days they fly and book direct flights.

Direct departures

Knoxville McGhee Tyson to Washington, D.C.

Monday

American Airlines,United Airlines,Allegiant Air

American Airlines,United Airlines, +1 more

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

Allegiant Air,American Airlines,United Airlines

Allegiant Air,American Airlines, +1 more

Friday

American Airlines,United Airlines,Allegiant Air

American Airlines,United Airlines, +1 more

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

Allegiant Air,American Airlines,United Airlines

Allegiant Air,American Airlines, +1 more

See more direct flights

Direct returns

Washington, D.C. to Knoxville McGhee Tyson

Monday

American Airlines,United Airlines,Allegiant Air

American Airlines,United Airlines, +1 more

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

Allegiant Air,American Airlines,United Airlines

Allegiant Air,American Airlines, +1 more

Friday

American Airlines,United Airlines,Allegiant Air

American Airlines,United Airlines, +1 more

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

Allegiant Air,American Airlines,United Airlines

Allegiant Air,American Airlines, +1 more

See more direct flights

Reviews of the top 4 airlines serving from Knoxville to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Washington, D.C.. 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 Washington, D.C.? 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
7.0Food
8.6Crew
7.5Entertainment
8.0Comfort
8.1Boarding
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

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.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

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.

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

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 other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

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.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

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.

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

Flight was on time and there was an empty seat next to me. That makes for a good flight!

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

Everything was good. Flight was very full so crew was busy. After we boarded and plane pulled away from the gate, we were delayed about 40 minutes- sitting on the runway - due to weather en route or at the destination. While weather is not the fault of the airline- it’s terrible to sit on a plane and not moving.

Everything you need to know for your flight from Knoxville to Washington, D.C.

Information on your arrival and departure airports