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Cheap flights from Knoxville to Washington from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Washington departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:18 pm - 11:09 am
TYS
-
SEA
17h 51m1 stop
Frontier Logo
12:34 pm - 3:30 pm
SEA
-
TYS
23h 56m1 stop
$255Frontier
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
10:00 am - 9:36 am
TYS
-
SEA
26h 36m2 stops
Multiple Airlines Logo
12:34 pm - 3:30 pm
SEA
-
TYS
23h 56m1 stop
$300Multiple Airlines
Thu, Jan 15 - Thu, Jan 22
United Airlines Logo
4:25 pm - 9:13 pm
TYS
-
PSC
7h 48m1 stop
United Airlines Logo
3:18 pm - 10:57 am
PSC
-
TYS
16h 39m2 stops
$314United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
11:07 am - 9:13 pm
TYS
-
PSC
13h 06m2 stops
United Airlines Logo
12:45 pm - 10:31 pm
PSC
-
TYS
6h 46m1 stop
$360United Airlines
Sat, Jan 17 - Wed, Jan 21
American Airlines Logo
4:30 pm - 12:16 am
TYS
-
PDX
10h 46m2 stops
American Airlines Logo
12:02 pm - 9:39 pm
PDX
-
TYS
6h 37m1 stop
$407American Airlines
Thu, Feb 19 - Sat, Feb 21
American Airlines Logo
4:30 pm - 12:16 am
TYS
-
PDX
10h 46m2 stops
American Airlines Logo
8:30 am - 9:39 pm
PDX
-
TYS
10h 09m2 stops
$412American Airlines
Thu, Feb 19 - Sat, Feb 21
Delta Logo
7:30 am - 5:33 pm
TYS
-
PDX
13h 03m2 stops
Delta Logo
9:45 pm - 9:04 am
PDX
-
TYS
8h 19m1 stop
$442Delta
Fri, Feb 20 - Mon, Feb 23
Delta Logo
7:30 am - 5:33 pm
TYS
-
PDX
13h 03m2 stops
Delta Logo
12:40 am - 3:15 pm
PDX
-
TYS
11h 35m2 stops
$447Delta
Fri, Feb 20 - Sun, Feb 22
Alaska Airlines Logo
2:17 pm - 11:04 pm
TYS
-
GEG
11h 47m2 stops
Alaska Airlines Logo
8:00 am - 10:47 pm
GEG
-
TYS
11h 47m2 stops
$537Alaska Airlines
Thu, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:00 am - 3:00 pm
TYS
-
ALW
12h 00m2 stops
Alaska Airlines Logo
5:00 am - 8:56 pm
ALW
-
TYS
12h 56m2 stops
$641Alaska Airlines
Sat, Jan 24 - Wed, Jan 28

American Airlines flights from Knoxville to State of Washington

Our best American Airlines deals on Knoxville to State of Washington flight tickets
American Airlines
Feb 19
TYS4:30 pmKnoxville McGhee Tyson
10h 46m
2 stops
PDX12:16 amPortland
Feb 21
PDX12:02 pmPortland
6h 37m
1 stop
TYS9:39 pmKnoxville McGhee Tyson
$407
Find similar
American Airlines
Feb 19
TYS4:30 pmKnoxville McGhee Tyson
10h 46m
2 stops
PDX12:16 amPortland
Feb 21
PDX8:30 amPortland
10h 09m
2 stops
TYS9:39 pmKnoxville McGhee Tyson
$412
Find similar
American Airlines
May 30
TYS5:11 amKnoxville McGhee Tyson
7h 13m
1 stop
SEA9:24 amSeattle/Tacoma Intl
Jun 8
SEA11:32 pmSeattle/Tacoma Intl
9h 03m
1 stop
TYS11:35 amKnoxville McGhee Tyson
$437
Find similar

United Airlines flights from Knoxville to State of Washington

Our best United Airlines deals on Knoxville to State of Washington flight tickets
United Airlines
Jan 21
TYS4:25 pmKnoxville McGhee Tyson
7h 48m
1 stop
PSC9:13 pmPasco Tri Cities
Jan 25
PSC3:18 pmPasco Tri Cities
16h 39m
2 stops
TYS10:57 amKnoxville McGhee Tyson
$314
Find similar
United Airlines
Jan 17
TYS11:07 amKnoxville McGhee Tyson
13h 06m
2 stops
PSC9:13 pmPasco Tri Cities
Jan 21
PSC12:45 pmPasco Tri Cities
6h 46m
1 stop
TYS10:31 pmKnoxville McGhee Tyson
$360
Find similar
United Airlines
Jan 17
TYS9:30 amKnoxville McGhee Tyson
14h 43m
2 stops
PSC9:13 pmPasco Tri Cities
Jan 21
PSC6:00 amPasco Tri Cities
11h 52m
2 stops
TYS8:52 pmKnoxville McGhee Tyson
$365
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to State of 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
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

KnoxvilleSeattle

TYS - SEA

TYSSEA

Knoxville McGhee Tyson

Thu 1/15

8:18 pm-11:09 am

1 stop17h 51m

Seattle/Tacoma Intl

Thu 1/22

12:34 pm-3:30 pm

1 stop23h 56m

$255

KnoxvilleSeattle

TYS - SEA

TYSSEA

Knoxville McGhee Tyson

Thu 1/15

10:00 am-9:36 am

2 stops26h 36m

Seattle/Tacoma Intl

Thu 1/22

12:34 pm-3:30 pm

1 stop23h 56m

$300

KnoxvillePasco

TYS - PSC

TYSPSC

Knoxville McGhee Tyson

Wed 1/21

4:25 pm-9:13 pm

1 stop7h 48m

Pasco Tri Cities

Sun 1/25

3:18 pm-10:57 am

2 stops16h 39m

$314

KnoxvillePasco

TYS - PSC

TYSPSC

Knoxville McGhee Tyson

Sat 1/17

11:07 am-9:13 pm

2 stops13h 06m

Pasco Tri Cities

Wed 1/21

12:45 pm-10:31 pm

1 stop6h 46m

$360

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 2/19

4:30 pm-12:16 am

2 stops10h 46m

Portland

Sat 2/21

12:02 pm-9:39 pm

1 stop6h 37m

$407

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 2/19

4:30 pm-12:16 am

2 stops10h 46m

Portland

Sat 2/21

8:30 am-9:39 pm

2 stops10h 09m

$412

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Fri 2/20

7:30 am-5:33 pm

2 stops13h 03m

Portland

Mon 2/23

9:45 pm-9:04 am

1 stop8h 19m

$442

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Fri 2/20

7:30 am-5:33 pm

2 stops13h 03m

Portland

Sun 2/22

12:40 am-3:15 pm

2 stops11h 35m

$447

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Thu 1/8

2:17 pm-11:04 pm

2 stops11h 47m

Spokane

Mon 1/12

8:00 am-10:47 pm

2 stops11h 47m

$537

KnoxvilleWalla Walla

TYS - ALW

TYSALW

Knoxville McGhee Tyson

Sat 1/24

6:00 am-3:00 pm

2 stops12h 00m

Walla Walla

Wed 1/28

5:00 am-8:56 pm

2 stops12h 56m

$641

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Knoxville to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to State of Washington?

The month of August is, on average, the cheapest month to fly to State of Washington from Knoxville, with most prices found around $396. If you aren’t able to travel to State of Washington during the month of August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $442.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Knoxville to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $596. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Knoxville to State of Washington for around $746.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $327. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $697 on average. Flights to State of Washington from Knoxville at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $622 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Knoxville for as low as $518 on momondo.

Can stopping save me money on Knoxville to State of Washington flights?

You could potentially save up to 36% on your flight if you consider stops on a Knoxville to State of Washington flight.

Cheap Knoxville to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to State of Washington

Fastest flight time

7h 05m

Direct flights

None
The fastest flight from Knoxville to State of Washington takes 7h 05m
There are no direct flights from Knoxville to State of Washington. There are no popular flight routes from Knoxville to State of Washington.
Search flight deals

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Washington?

    Prices for flights from Knoxville McGhee Tyson Airport to Washington were last updated today.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Washington?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Washington?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Knoxville to State of Washington

Compare and see reviews for airlines that fly from Knoxville to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $192Free CancellationRating
7.9
8,007 reviews
Search Delta flights
FrontierPriceFrom $248Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $304Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Knoxville to Washington. momondo saves you time and could save you money on your trip.

Can I find flights from Knoxville to Washington with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to Washington flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Washington?

momondo provides multiple filters to help you find the best flight to Washington from Knoxville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Knoxville to Washington right now. Can momondo alert me if prices change?

Price alerts on flights to Washington from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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