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$137+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SEA
Apr 21 — Apr 281
Tue 4/21
Tue 4/28
1 adult, Economy
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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 March 22, 2026.

This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:32 pm
TYS
-
SEA
1 stop16h 16m
Frontier
Tue 8/253:19 pm
SEA
-
TYS
1 stop25h 18m
Frontier
Deal found 3/22$281
This CheapOair deal was found by Cheapflights users on 3/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:32 pm
TYS
-
PDX
1 stop23h 25m
Frontier
Thu 8/1312:26 pm
PDX
-
TYS
1 stop28h 11m
Frontier
Deal found 3/20$281
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/228:32 pm
TYS
-
SEA
1 stop16h 34m
Frontier
Sun 5/317:50 pm
SEA
-
TYS
1 stop20h 43m
Frontier
Deal found 3/22$331
This CheapOair deal was found by Cheapflights users on 3/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:32 pm
TYS
-
PDX
1 stop23h 14m
Frontier
Tue 6/25:46 pm
PDX
-
TYS
1 stop22h 47m
Frontier
Deal found 3/19$342
This CheapOair deal was found by Cheapflights users on 3/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:32 pm
TYS
-
SEA
1 stop20h 32m
Frontier
Thu 7/237:41 pm
SEA
-
TYS
1 stop20h 56m
Frontier
Deal found 3/21$346
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Fri 8/148:32 pm
TYS
-
SEA
1 stop16h 16m
Multiple Airlines
Sat 8/227:41 pm
SEA
-
TYS
1 stop15h 08m
Multiple Airlines
Deal found 3/22$348
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Tue 5/54:09 pm
TYS
-
SEA
1 stop9h 38m
American Airlines
Mon 5/1112:59 am
SEA
-
TYS
1 stop8h 31m
American Airlines
Deal found 3/20$375
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/155:53 pm
TYS
-
PDX
1 stop7h 41m
United Airlines
Wed 4/2210:50 am
PDX
-
TYS
1 stop9h 18m
United Airlines
Deal found 3/19$375
This Delta deal was found by Cheapflights users on 3/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:40 am
TYS
-
PDX
1 stop8h 01m
Delta
Tue 4/2112:30 am
PDX
-
TYS
2 stops12h 22m
Delta
Deal found 3/19$380
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Tue 5/510:56 am
TYS
-
PDX
1 stop9h 03m
American Airlines
Sat 5/96:00 am
PDX
-
TYS
1 stop9h 04m
American Airlines
Deal found 3/20$381
This American Airlines deal was found by Cheapflights users on 3/20. 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 5/276:20 pm
TYS
-
PDX
1 stop8h 36m
American Airlines
Wed 6/310:59 pm
PDX
-
TYS
1 stop9h 00m
American Airlines
Deal found 3/20$383
This American Airlines deal was found by Cheapflights users on 3/20. 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 4/291:20 pm
TYS
-
SEA
1 stop9h 16m
American Airlines
Wed 4/2912:59 am
SEA
-
TYS
1 stop8h 31m
American Airlines
Deal found 3/20$384

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 March 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$281
(CheapOair)

One-way from

$137
(CheapOair)

Popular in

December

Cheapest in

August

Average price

$586
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. 8% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 22, 2026.
Use the filters below to find and compare flights from Knoxville to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleSeattle

TYS - SEA

TYSSEA

Knoxville McGhee Tyson

Fri 8/14

8:32 pm-9:48 am

1 stop16h 16m

Seattle/Tacoma Intl

Sat 8/22

7:41 pm-1:49 pm

1 stop15h 08m

$348

KnoxvillePasco

TYS - PSC

TYSPSC

Knoxville McGhee Tyson

Tue 4/7

4:30 pm-9:01 pm

1 stop7h 31m

Pasco Tri Cities

Tue 5/5

5:00 am-3:07 pm

1 stop7h 07m

$388

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 5/5

5:54 pm-11:53 pm

2 stops8h 59m

Portland

Sat 5/9

5:01 pm-9:34 am

2 stops13h 33m

$391

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 5/13

1:59 pm-10:02 pm

2 stops11h 03m

Portland

Tue 5/19

8:11 pm-11:09 am

2 stops11h 58m

$397

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Fri 5/1

5:06 pm-10:56 pm

1 stop8h 50m

Portland

Wed 5/6

1:52 pm-11:56 pm

1 stop7h 04m

$416

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Thu 4/30

4:20 pm-9:16 pm

1 stop7h 56m

Spokane

Sun 5/3

7:10 am-4:59 pm

1 stop6h 49m

$428

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 5/7

3:30 pm-11:44 pm

2 stops11h 14m

Portland

Sun 5/10

2:06 pm-11:56 pm

1 stop6h 50m

$436

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Tue 9/8

1:55 pm-10:25 pm

2 stops11h 30m

Spokane

Tue 9/22

6:15 am-6:55 pm

2 stops9h 40m

$439

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 9/9

1:55 pm-10:05 pm

2 stops11h 10m

Spokane

Tue 9/22

6:15 am-6:55 pm

2 stops9h 40m

$439
Quickest round-trip

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Fri 8/7

6:30 am-11:48 am

1 stop8h 18m

Spokane

Tue 8/11

1:38 pm-10:38 pm

1 stop6h 00m

$443

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 56 resultsSorted by cheapest first
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6

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, October is the cheapest month in which you can book a flight from Knoxville to State of Washington (average of $188). 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 March 22, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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
8,318 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

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
8,318 reviews
Delta
7.9
Good
8,318 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

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
9,459 reviews
Delta
7.9
Good
8,318 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

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
7.1
Good
11,488 reviews
Delta
7.9
Good
8,318 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

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
3,020 reviews
Delta
7.9
Good
8,318 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

Entertainment

7.8

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 Frontier, United Airlines, and Delta fly from Knoxville to State of Washington in about 7h 41m. The time it takes to get you to your destination can typically vary by up to 15h 44m. There are 2107 mi between Knoxville and State of Washington. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Knoxville to State of Washington one-way?

    The cheapest airlines for a one-way flight from Knoxville to State of Washington are Frontier ($93), Delta ($126), and Allegiant Air ($195).

  • 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, October is the cheapest month in which you can book a flight from Knoxville to State of Washington (average of $188). 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

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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 March 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$179Average$278FlexibilityNo cancel feeOn-time62%
DeltaCheapest$269Average$496FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$517FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$304Average$629FlexibilityNo cancel feeOn-time69%

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