WAS - TYS

$53 Find Cheap Flights from Washington, D.C. to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Knoxville departing on 10/13. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Knoxville, 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 Washington, D.C. to Knoxville, as well as popular online travel agencies
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Cheap Flights from Washington, D.C. to Knoxville (WAS-TYS)

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

Thu, Nov 20 - Sun, Nov 23
Allegiant Air Logo
8:23 pm - 10:03 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:49 pm - 7:33 pmTYS-IAD
1h 44mnonstop
$86Allegiant Air
Find Deal
Fri, Nov 7 - Mon, Nov 10
Allegiant Air Logo
8:46 pm - 10:26 pmIAD-TYS
1h 40mnonstop
Allegiant Air Logo
5:22 pm - 7:06 pmTYS-IAD
1h 44mnonstop
$89Allegiant Air
Find Deal
Thu, Nov 20 - Sun, Nov 23
Multiple Airlines Logo
11:12 am - 8:53 pmIAD-TYS
9h 41m1 stop
Multiple Airlines Logo
5:49 pm - 7:33 pmTYS-IAD
1h 44mnonstop
$167Multiple Airlines
Find Deal
Fri, Dec 5 - Sun, Dec 7
Multiple Airlines Logo
8:30 am - 9:49 pmIAD-TYS
13h 19m1 stop
Multiple Airlines Logo
5:23 pm - 7:07 pmTYS-IAD
1h 44mnonstop
$171Multiple Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
American Airlines Logo
1:59 pm - 3:48 pmDCA-TYS
1h 49mnonstop
American Airlines Logo
6:06 am - 7:49 amTYS-DCA
1h 43mnonstop
$189American Airlines
Find Deal
Wed, Oct 22 - Sat, Oct 25
United Airlines Logo
8:45 am - 10:29 amIAD-TYS
1h 44mnonstop
United Airlines Logo
9:55 am - 11:39 amTYS-IAD
1h 44mnonstop
$189United Airlines
Find Deal
Mon, Jan 12 - Wed, May 20
American Airlines Logo
8:10 am - 10:01 amDCA-TYS
1h 51mnonstop
American Airlines Logo
7:53 pm - 9:30 pmTYS-DCA
1h 37mnonstop
$190American Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
United Airlines Logo
12:59 pm - 2:45 pmIAD-TYS
1h 46mnonstop
United Airlines Logo
7:26 pm - 9:10 pmTYS-IAD
1h 44mnonstop
$194United Airlines
Find Deal
Wed, Oct 29 - Sat, Nov 1
Delta Logo
6:05 am - 11:04 amIAD-TYS
4h 59m1 stop
Delta Logo
5:16 pm - 11:20 pmTYS-IAD
6h 04m1 stop
$209Delta
Find Deal
Tue, Oct 7 - Tue, Oct 14
Delta Logo
6:00 am - 12:03 pmDCA-TYS
6h 03m1 stop
Delta Logo
5:19 pm - 10:51 pmTYS-DCA
5h 32m1 stop
$209Delta
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
American's Main Cabin Extra includes early boarding.
United's Economy Plus offers extra legroom benefits.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Allegiant Air
Cheapest • from $86 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Knoxville
Watch video
Watch video
Watch video
Watch video
Top routes
IAD-TYS
Cheapest • 43% average savings
IAD-TYS
Most popular
Insights
Insights
Insights
Insights
When to book
7 weeks
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 26% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$86
Overall average: $339
Allegiant Air
Thu 11/20Sun 11/23
IAD - TYS • Non-stop
Cheapest one-way
$53
Typical prices: $222-389
Allegiant Air
Mon 10/13
IAD - TYS • Non-stop
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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 Knoxville!
Expert advice

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

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

American's Main Cabin Extra offers early boarding and complimentary drinks, enhancing your travel experience.


American Airlines provides high-speed Wi-Fi for purchase, with some free options for T-Mobile customers.

United Airlines

United offers Priority Boarding to avoid overhead bin space issues, placing you in Zone 2.


United's Economy Plus seats provide up to six inches more legroom than standard economy.

Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

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.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

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.

Read more
Booking Insights

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

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

Find cheap flights to Knoxville
Find cheap flights to Knoxville

Planning a trip from Washington, D.C. to Knoxville? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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

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

The cheapest return flight from Washington, D.C. to Knoxville costs $80 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Knoxville (TYS). Over the past month, this route was, on average, 43% cheaper than other Washington, D.C.-Knoxville routes. It is also the most popular route.

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

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

If you are looking for a flight deal from Washington, D.C. to Knoxville, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Knoxville, Thursday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Knoxville, 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 Washington, D.C. to Knoxville is August, where tickets cost $219 (return) on average. On the other hand, the most expensive months are September and October, where the average cost of round-trip tickets is $344 and $329 respectively.

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

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $308 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Knoxville, 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 Washington, D.C. to Knoxville, you should book around 7 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$53
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 7% increase in price.
Flight from Washington Dulles Airport to Knoxville

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

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Knoxville 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 Washington, D.C. to Knoxville

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Knoxville was $53 for a one-way ticket and $86 for a round-trip.

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

    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 Washington, D.C. to Knoxville?

    Washington, D.C. has 2 major airports: Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl. Knoxville McGhee Tyson is the only airport in Knoxville. You’ll usually find the cheapest deals if you fly from Washington Dulles Airport.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Knoxville are Delta and United Airlines. With an average price for the route of $268 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $328 and an overall rating of 7.4.

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

    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 Washington, D.C. to Knoxville.

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

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

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

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

    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 Knoxville from Washington, D.C. 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 Washington, D.C. to Knoxville

  • Looking for a cheap flight? 25% of our users found flights on this route for $155 or less one-way and $209 or less round-trip.

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

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

Direct departures

Washington, D.C. to Knoxville McGhee Tyson

Monday

Allegiant Air, American Airlines, United Airlines

Allegiant Air, American Airlines, +1 more

Tuesday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

Wednesday

American Airlines, United Airlines

American Airlines, United Airlines

Thursday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

Friday

Allegiant Air, American Airlines, United Airlines

Allegiant Air, American Airlines, +1 more

Saturday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

Sunday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

See more direct flights

Direct returns

Knoxville McGhee Tyson to Washington, D.C.

Monday

Allegiant Air, American Airlines, United Airlines

Allegiant Air, American Airlines, +1 more

Tuesday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

Wednesday

American Airlines, United Airlines

American Airlines, United Airlines

Thursday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

Friday

Allegiant Air, American Airlines, United Airlines

Allegiant Air, American Airlines, +1 more

Saturday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

Sunday

American Airlines, United Airlines, Allegiant Air

American Airlines, United Airlines, +1 more

See more direct flights

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

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Knoxville. 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 Washington, D.C. to Knoxville? 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.
7.9
DeltaOverall score based on 7954 reviews
7.3Food
7.9Comfort
7.9Entertainment
8.2Boarding
8.5Crew
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Delayed because of weather in Nashville. I think God or some higher power generally has cursed me when it comes to flying out of Charlotte on American. I'm delayed pretty much everytime. We need Team Cobra Kai types to come in and "sweep the leg(s)" of the Charlotte ops people on principle. Don't let the sweet southern rocking chairs fool you, Charlotte is a sinkhole

Pitch was very small. Knees were on the seat back in front of me.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

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

Information on your arrival and departure airports

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