HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington

$155+ Cheap flights from Knoxville (TYS) to Washington

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Knoxville to Washington with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Knoxville to Washington

Cheapest flights from Knoxville to Washington
Explore the most affordable flight options available from Knoxville to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:58 am
TYS
-
SEA
2 stops28h 03m
Multiple Airlines
Thu 2/261:16 pm
SEA
-
TYS
1 stop25h 50m
Multiple Airlines
Deal found 1/21$294
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 2/97:35 am
TYS
-
SEA
1 stop30h 19m
Multiple Airlines
Sun 2/1512:00 pm
SEA
-
TYS
1 stop28h 18m
Multiple Airlines
Deal found 1/18$348
This American Airlines deal was found by Cheapflights users on 1/20. 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 2/184:02 pm
TYS
-
SEA
1 stop11h 22m
American Airlines
Wed 2/257:15 am
SEA
-
TYS
1 stop10h 25m
American Airlines
Deal found 1/20$355
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Tue 5/54:09 pm
TYS
-
SEA
1 stop8h 14m
American Airlines
Tue 5/127:00 am
SEA
-
TYS
1 stop8h 04m
American Airlines
Deal found 1/21$359
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 4/147:05 am
TYS
-
PDX
1 stop8h 29m
United Airlines
Tue 4/1411:59 pm
PDX
-
TYS
1 stop7h 09m
United Airlines
Deal found 1/20$359
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/176:45 am
TYS
-
SEA
1 stop8h 04m
United Airlines
Tue 2/248:30 am
SEA
-
TYS
2 stops11h 00m
United Airlines
Deal found 1/20$364
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Fri 2/204:02 pm
TYS
-
SEA
1 stop11h 22m
American Airlines
Fri 2/2712:07 am
SEA
-
TYS
1 stop15h 30m
American Airlines
Deal found 1/20$365
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 2/94:30 pm
TYS
-
SEA
2 stops21h 24m
Frontier
Sun 2/1512:00 pm
SEA
-
TYS
1 stop28h 18m
Frontier
Deal found 1/18$367
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Wed 2/186:45 am
TYS
-
PDX
1 stop8h 10m
United Airlines
Wed 2/2512:57 pm
PDX
-
TYS
1 stop7h 47m
United Airlines
Deal found 1/19$367
This United Airlines deal was found by Cheapflights users on 1/21. 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 2/59:30 am
TYS
-
PSC
2 stops14h 40m
United Airlines
Mon 2/93:18 pm
PSC
-
TYS
2 stops16h 39m
United Airlines
Deal found 1/21$370
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Thu 2/264:29 pm
TYS
-
GEG
1 stop7h 43m
American Airlines
Wed 3/46:00 am
GEG
-
TYS
1 stop6h 37m
American Airlines
Deal found 1/21$372
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:30 pm
TYS
-
SEA
1 stop7h 19m
Delta
Tue 5/511:14 pm
SEA
-
TYS
1 stop7h 52m
Delta
Deal found 1/20$372

Find flight deals from Knoxville to Washington

Keep the following information in mind while searching for Knoxville to Washington flight deals. Data was last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$294
(Kiwi.com)

One-way from

$155
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$574
Provider with most accurate pricing for Knoxville McGhee Tyson-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Seattle/Tacoma Intl flights.
Search Deals
From Knoxville McGhee Tyson to Washington
Search Deals
One-way flight from Knoxville McGhee Tyson to Washington
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Washington 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 January 21, 2026.
Use the filters below to find and compare flights from Knoxville to Washington that are best for you.

Fly from

Knoxville

Fly to

Washington

Route

Depart

Return

Price

KnoxvilleSeattle

TYS - SEA

TYSSEA

Knoxville McGhee Tyson

Tue 2/24

6:45 am-11:49 am

1 stop8h 04m

Seattle/Tacoma Intl

Tue 3/3

5:00 am-7:29 pm

2 stops11h 29m

$364

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 4/14

10:49 am-5:45 pm

2 stops9h 56m

Portland

Tue 4/14

11:59 pm-10:08 am

1 stop7h 09m

$364

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 2/18

6:45 am-11:55 am

1 stop8h 10m

Portland

Wed 2/25

12:57 pm-11:44 pm

1 stop7h 47m

$367

KnoxvillePasco

TYS - PSC

TYSPSC

Knoxville McGhee Tyson

Thu 2/5

9:30 am-9:10 pm

2 stops14h 40m

Pasco Tri Cities

Mon 2/9

3:18 pm-10:57 am

2 stops16h 39m

$370

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 2/23

6:21 pm-11:27 pm

1 stop8h 06m

Portland

Sat 2/28

2:05 pm-12:28 am

1 stop7h 23m

$376

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 2/18

1:00 pm-8:55 pm

2 stops10h 55m

Portland

Wed 2/25

7:15 am-11:12 pm

2 stops12h 57m

$378

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 2/24

7:38 am-6:48 pm

2 stops14h 10m

Portland

Mon 3/9

7:15 pm-9:16 am

2 stops11h 01m

$383

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Thu 2/26

7:51 am-11:44 am

1 stop6h 53m

Spokane

Wed 3/4

6:00 am-3:37 pm

1 stop6h 37m

$385

KnoxvilleSeattle

TYS - SEA

TYSSEA

Knoxville McGhee Tyson

Tue 5/5

5:44 am-1:15 pm

1 stop10h 31m

Seattle/Tacoma Intl

Tue 5/12

7:00 am-6:04 pm

1 stop8h 04m

$385

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 2/28

7:51 am-12:17 am

1 stop19h 26m

Portland

Sun 3/1

11:35 pm-4:31 pm

1 stop13h 56m

$385

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 49 results
1
2
3
...
5

Best time to book a flight from Knoxville to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Knoxville 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 Knoxville to Washington

What is the cheapest month to book a flight from Knoxville to State of Washington?

Currently, April is the cheapest month in which you can book a flight from Knoxville to State of Washington (average of $134). Flying from Knoxville to State of Washington in December is currently the most expensive (average of $318). 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.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated January 21, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Knoxville to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,088 reviews
Delta
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,191 reviews
Delta
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,174 reviews
Delta
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,057 reviews
Delta
7.9
Good
8,088 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Washington. 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 from for flights from Knoxville to Washington?

    If you book a flight to Washington from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville.

  • How long is the flight from Knoxville to State of Washington?

    Airlines like United Airlines, American Airlines, and Delta fly from Knoxville to State of Washington in about 8h 04m. The time it takes to get you to your destination can typically vary by up to 2h 47m. There are 2109 mi between Knoxville and State of Washington. This flight may include one or multiple stops.

  • What are the most popular routes from Knoxville to State of Washington?

    The most popular route from Knoxville to State of Washington is Knoxville McGhee Tyson - Seattle/Tacoma Intl. You may also consider Knoxville McGhee Tyson - Portland or Knoxville McGhee Tyson - Spokane.

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

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

  • How can I find direct flights from Knoxville to Washington?

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

  • Can I find deals for business class flights from Knoxville to Washington?

    Yes. Cheapflights offers flight deals from Knoxville to Washington 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 Knoxville to State of Washington?

    Currently, April is the cheapest month in which you can book a flight from Knoxville to State of Washington (average of $134). Flying from Knoxville to State of Washington in December is currently the most expensive (average of $318). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Knoxville to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Nashville to Los Angeles flights
Nashville to Denver flights
Nashville to Fort Lauderdale flights
Nashville to Miami flights
Nashville to Seattle flights
Nashville to John F Kennedy Intl flights
Memphis to Las Vegas flights
Nashville to LaGuardia flights
Nashville to Orlando flights
Memphis to Hobby flights
Nashville to Newark flights
Nashville to Hobby flights
Nashville to Las Vegas flights
Nashville to Dallas/Fort Worth flights
Nashville to Sky Harbor Intl flights
Memphis to Orlando flights
Nashville to George Bush Intcntl flights
Memphis to LaGuardia flights
Nashville to O'Hare Intl flights
Memphis to Dallas/Fort Worth flights
Memphis to Miami flights
Knoxville to Denver flights
Memphis to Denver flights
Memphis to George Bush Intcntl flights
Nashville to Reagan-National flights
Nashville to Tampa flights
Memphis to Los Angeles flights
Nashville to Dulles Intl flights
Nashville to San Francisco flights
Nashville to Salt Lake City flights
Nashville to New Orleans flights
Memphis to John F Kennedy Intl flights
Nashville to Honolulu flights
Nashville to Boston flights
Memphis to Atlanta flights
Chattanooga to LaGuardia flights
Nashville to Baltimore flights
Nashville to Fort Myers flights
Knoxville to LaGuardia flights
Memphis to O'Hare Intl flights
Chattanooga to Orlando flights
Nashville to Minneapolis flights
Nashville to San Diego flights
Knoxville to Hobby flights
Nashville to Ontario flights
Memphis to Newark flights
Chattanooga to Las Vegas flights
Nashville to Austin flights
Chattanooga to Newark flights
Memphis to Seattle flights

Top 4 airlines flying from Knoxville to Washington

Discover the top 4 airlines that operate flights from Knoxville to Washington. 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$179Average$330FlexibilityNo cancel feeOn-time62%
DeltaCheapest$192Average$494FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$547FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$304Average$639FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.