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$39+ Cheap flights from Washington, D.C. (WAS) to Knoxville (TYS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — TYS
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Knoxville McGhee Tyson are usually found in August or November, booked 72 days in advance, depart on a Wednesday or Friday and return on a Friday

Cheap flight deals from Washington, D.C. to Knoxville

Cheapest flights from Washington, D.C. to Knoxville
Explore the most affordable flight options available from Washington, D.C. to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2025.

This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:55 pmIAD - TYS
Nonstop1h 53mUnited Airlines
Sun 12/285:45 amTYS - IAD
Nonstop1h 45mUnited Airlines
Deal found 12/20$268
This United Airlines deal was found by Cheapflights users on 12/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:55 pmIAD - TYS
Nonstop1h 53mUnited Airlines
Sun 12/285:45 amTYS - IAD
Nonstop1h 45mUnited Airlines
Deal found 12/19$279
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/229:00 amIAD - TYS
Nonstop1h 56mUnited Airlines
Thu 1/222:25 pmTYS - IAD
Nonstop1h 45mUnited Airlines
Deal found 12/20$286
This United Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:55 pmIAD - TYS
Nonstop1h 53mUnited Airlines
Sat 12/275:45 amTYS - IAD
Nonstop1h 45mUnited Airlines
Deal found 12/21$290
This Kiwi.com deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:32 pmIAD - TYS
2 stops46h 30mAllegiant Air
Thu 1/221:39 pmTYS - IAD
Nonstop1h 44mAllegiant Air
Deal found 12/20$313
This American Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:54 pmDCA - TYS
Nonstop1h 44mAmerican Airlines
Sat 1/34:28 pmTYS - DCA
Nonstop1h 38mAmerican Airlines
Deal found 12/21$324
This United Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:00 amIAD - TYS
Nonstop1h 56mUnited Airlines
Mon 12/295:45 amTYS - IAD
Nonstop1h 45mUnited Airlines
Deal found 12/21$328
This American Airlines deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:30 pmDCA - TYS
1 stop4h 28mAmerican Airlines
Wed 12/314:28 pmTYS - DCA
Nonstop1h 38mAmerican Airlines
Deal found 12/21$344
This United Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:55 pmIAD - TYS
Nonstop1h 56mUnited Airlines
Sat 1/35:45 amTYS - IAD
Nonstop1h 45mUnited Airlines
Deal found 12/20$350
This Kiwi.com deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:50 pmIAD - TYS
3 stops32h 21mMultiple Airlines
Thu 1/221:39 pmTYS - IAD
Nonstop1h 44mMultiple Airlines
Deal found 12/20$358
This Kiwi.com deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:16 pmIAD - TYS
Nonstop1h 40mAllegiant Air
Mon 12/223:45 pmTYS - IAD
1 stop19h 08mAllegiant Air
Deal found 12/20$359
This American Airlines deal was found by Cheapflights users on 12/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:55 pmBWI - TYS
1 stop4h 05mAmerican Airlines
Fri 1/25:08 pmTYS - BWI
1 stop6h 47mAmerican Airlines
Deal found 12/20$359

Find flight deals from Washington, D.C. to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$82
(Kiwi.com)

One-way from

$39
(Kiwi.com)

Popular in

February

Cheapest in

August

Average price

$283

Good round-trip deal

$133 or less

Good one-way deal

$54 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Knoxville McGhee Tyson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Knoxville McGhee Tyson flights.
Search Deals
From Washington, D.C. (WAS) to Knoxville McGhee Tyson
Search Deals
One-way flight from Washington, D.C. (WAS) to Knoxville McGhee Tyson
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Knoxville McGhee Tyson.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Knoxville McGhee Tyson.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 22, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Knoxville that are best for you.

Fly from

Washington, D.C.

Fly to

Knoxville

Route

Depart

Return

Price

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 2/26

8:27 pm-10:07 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Sun 3/1

5:53 pm-7:37 pm

Nonstop1h 44m

$82

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 2/11

9:00 am-10:57 am

Nonstop1h 57m

Knoxville McGhee Tyson

Tue 2/17

7:25 pm-9:11 pm

Nonstop1h 46m

$163

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 1/16

8:53 pm-5:09 pm

2 stops20h 16m

Knoxville McGhee Tyson

Sun 1/18

1:39 pm-3:23 pm

Nonstop1h 44m

$172

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Wed 2/11

9:17 am-3:20 pm

1 stop6h 03m

Knoxville McGhee Tyson

Tue 2/17

5:08 pm-11:56 pm

1 stop6h 48m

$183

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Mon 1/19

12:55 pm-2:49 pm

Nonstop1h 54m

Knoxville McGhee Tyson

Mon 1/26

7:20 pm-9:12 pm

Nonstop1h 52m

$183

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Thu 2/26

1:48 pm-3:41 pm

Nonstop1h 53m

Knoxville McGhee Tyson

Sun 3/1

6:00 am-7:46 am

Nonstop1h 46m

$186

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 1/21

6:00 am-11:08 am

1 stop5h 08m

Knoxville McGhee Tyson

Sun 1/25

5:40 am-9:13 am

1 stop3h 33m

$196

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Wed 1/21

8:45 am-1:50 pm

1 stop5h 05m

Knoxville McGhee Tyson

Sun 1/25

5:40 am-9:23 am

1 stop3h 43m

$200

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Wed 1/7

1:59 pm-3:56 pm

Nonstop1h 57m

Knoxville McGhee Tyson

Sun 1/11

6:00 am-7:46 am

Nonstop1h 46m

$204

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Wed 2/11

8:47 am-10:49 am

Nonstop2h 02m

Knoxville McGhee Tyson

Mon 2/23

7:40 am-2:40 pm

1 stop7h 00m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 54 results
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Compare providers for flights from Washington, D.C. to Knoxville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Knoxville in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Knoxville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Knoxville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Knoxville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Knoxville flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Knoxville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Knoxville. Price data was last updated on December 19, 2025.

The best time to book flights from Washington, D.C. to Knoxville is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Knoxville?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Knoxville (average of $46). Flying from Washington, D.C. to Knoxville in February is currently the most expensive (average of $217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to TYS?

Find hourly flight availability from Washington, D.C. to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2025.

It’s optimal to fly from Washington, D.C. to Knoxville in the evening. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Knoxville. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Knoxville flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to Knoxville

Explore weekly flight availability from Washington, D.C. to Knoxville. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 22, 2025.

The most flights from WAS to TYS are scheduled on a Sunday (18 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (14 on average).

How much does it cost to fly round-trip from Washington, D.C. to Knoxville?

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated December 22, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Knoxville, such as United Airlines, American Airlines, and Allegiant Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,101 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,101 reviews
United Airlines
7.4
Good
9,101 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.2
Good
11,051 reviews
United Airlines
7.4
Good
9,101 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Allegiant Air
7.2
Good
702 reviews
United Airlines
7.4
Good
9,101 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Knoxville from Washington, D.C.?

    Knoxville McGhee Tyson (TYS), located 11.3 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Knoxville. 4 airlines have flights to McGhee Tyson from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Knoxville McGhee Tyson should not be difficult; the airport handles an average of 16 inbound flights from Washington, D.C. per day.

  • How long is the flight from Washington, D.C. to Knoxville?

    Allegiant Air, United Airlines, and American Airlines can get you from Washington, D.C. to Knoxville in just under 1h 40m. Your travel time can differ by up to 4h 23m. Washington, D.C. and Knoxville are separated by a distance of 419 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. to Knoxville round-trip?

    Our cheapest airline available from Washington, D.C. to Knoxville is Allegiant Air. Our recent data shows that you can find tickets from as low as $40 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $162 and $189 round-trip. You may be able to fly from Washington, D.C. to Knoxville for 85% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Washington, D.C. to Knoxville one-way?

    The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $36. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Washington, D.C. to Knoxville for a low price.

  • What are the most popular routes from Washington, D.C. to Knoxville?

    When deciding which route to take from Washington, D.C. to Knoxville consider Washington, D.C. Dulles Intl - Knoxville McGhee Tyson, Baltimore/Washington - Knoxville McGhee Tyson or Washington, D.C. Reagan-National - Knoxville McGhee Tyson as they are the most popular.

  • What are the most reliable airlines from Washington, D.C. to Knoxville?

    Consider CommutAir (79%), United Airlines (79%) or Allegiant Air (78%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Knoxville.

  • What are the cheapest flights from Washington, D.C. to Knoxville?

    While on average a flight from Washington, D.C. to Knoxville is generally $168, our data shows the cheapest flight currently is $40. When looking at the most popular route, (Washington, D.C. Dulles Intl - Knoxville McGhee Tyson), you can expect to pay $82 for that flight.

  • Can I find deals for flights from Washington, D.C. to Knoxville that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Knoxville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Knoxville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Knoxville.

  • Can I find deals for business class flights from Washington, D.C. to Knoxville?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Knoxville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Knoxville (average of $46). Flying from Washington, D.C. to Knoxville in February is currently the most expensive (average of $217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Cherokee
Crossville
Corbin
Morristown
Bryson City
Alcoa
Oak Ridge
Murphy

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Top 4 airlines flying from Washington, D.C. to Knoxville

Discover the top 4 airlines that operate flights from Washington, D.C. to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$51Average$91FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$187Average$366FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$317FlexibilityNo cancel feeOn-time71%
DeltaCheapest$208Average$281FlexibilityNo cancel feeOn-timeN/A

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