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Cheap flights from Knoxville to Seattle from $148

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Knoxville to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 am - 3:12 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
11h 42m1 stop Denver Intl
Multiple Airlines Logo
4:27 pm - 2:11 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
18h 44m1 stop Denver Intl
$195Multiple Airlines
Thu, Oct 22 - Sat, Oct 31
Multiple Airlines Logo
6:30 am - 3:12 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
11h 42m1 stop Denver Intl
Multiple Airlines Logo
4:27 pm - 2:11 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
18h 44m1 stop Denver Intl
$201Multiple Airlines
Thu, Oct 22 - Sat, Oct 31
American Airlines Logo
4:20 pm - 10:31 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
9h 11m1 stop Charlotte Douglas
American Airlines Logo
10:22 am - 11:11 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
9h 49m1 stop Dallas/Fort Worth
$337American Airlines
Sat, Jan 16 - Thu, Jan 21
American Airlines Logo
10:10 am - 6:10 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
11h 00m1 stop Charlotte Douglas
American Airlines Logo
12:38 pm - 10:48 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
7h 10m1 stop Charlotte Douglas
$337American Airlines
Tue, Nov 10 - Tue, Nov 17
United Airlines Logo
6:45 am - 12:19 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
8h 34m1 stop Chicago O'Hare Intl
United Airlines Logo
10:56 pm - 9:53 amSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
7h 57m1 stop Chicago O'Hare Intl
$337United Airlines
Thu, Oct 29 - Thu, Oct 29
United Airlines Logo
6:00 am - 11:27 amTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
8h 27m1 stop Chicago O'Hare Intl
United Airlines Logo
11:14 pm - 10:37 amSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
8h 23m1 stop Washington, D.C. Dulles Intl
$337United Airlines
Tue, Oct 6 - Tue, Oct 13
Delta Logo
4:40 pm - 11:58 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
10h 18m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:05 pm - 10:20 amSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
8h 15m1 stop Detroit Metropolitan Wayne County
$337Delta
Thu, Oct 1 - Mon, Oct 5
Delta Logo
5:18 pm - 10:05 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
7h 47m1 stop Detroit Metropolitan Wayne County
Delta Logo
10:35 pm - 9:34 amSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
7h 59m1 stop Atlanta Hartsfield-Jackson
$337Delta
Thu, Oct 8 - Mon, Oct 12
Southwest Logo
2:40 pm - 10:30 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
10h 50m2 stops Dallas Love Field Denver Intl
Southwest Logo
12:15 am - 12:20 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
9h 05m2 stops Chicago Midway Nashville Intl
$347Southwest
Tue, Dec 15 - Mon, Jan 4
Southwest Logo
7:05 am - 7:00 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
14h 55m2 stops Nashville Intl Phoenix Sky Harbor Intl
Southwest Logo
6:10 am - 3:30 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
6h 20m1 stop Denver Intl
$348Southwest
Tue, Nov 10 - Tue, Nov 17

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American Airlines flights from Knoxville to Seattle

Our best American Airlines deals on Knoxville to Seattle flight tickets
American Airlines
Oct 14
TYS10:00 amKnoxville McGhee Tyson
11h 06m
1 stop
SEA6:06 pmSeattle/Tacoma Intl
Nov 2
SEA10:27 amSeattle/Tacoma Intl
10h 05m
1 stop
TYS11:32 pmKnoxville McGhee Tyson
$337
American Airlines
Oct 3
TYS3:21 pmKnoxville McGhee Tyson
9h 31m
1 stop
SEA9:52 pmSeattle/Tacoma Intl
Oct 6
SEA11:59 pmSeattle/Tacoma Intl
8h 06m
1 stop
TYS11:05 amKnoxville McGhee Tyson
$360
American Airlines
Nov 25
TYS6:50 amKnoxville McGhee Tyson
11h 01m
1 stop
SEA2:51 pmSeattle/Tacoma Intl
Dec 1
SEA5:10 amSeattle/Tacoma Intl
8h 30m
1 stop
TYS4:40 pmKnoxville McGhee Tyson
$374

United Airlines flights from Knoxville to Seattle

Our best United Airlines deals on Knoxville to Seattle flight tickets
United Airlines
Oct 29
TYS10:43 amKnoxville McGhee Tyson
10h 14m
2 stops
SEA5:57 pmSeattle/Tacoma Intl
Oct 29
SEA10:56 pmSeattle/Tacoma Intl
7h 57m
1 stop
TYS9:53 amKnoxville McGhee Tyson
$342
United Airlines
Oct 30
TYS5:05 pmKnoxville McGhee Tyson
7h 14m
1 stop
SEA9:19 pmSeattle/Tacoma Intl
Nov 3
SEA10:56 pmSeattle/Tacoma Intl
9h 34m
2 stops
TYS11:30 amKnoxville McGhee Tyson
$365
United Airlines
Oct 2
TYS12:05 pmKnoxville McGhee Tyson
9h 58m
1 stop
SEA7:03 pmSeattle/Tacoma Intl
Oct 5
SEA11:13 pmSeattle/Tacoma Intl
7h 32m
1 stop
TYS9:45 amKnoxville McGhee Tyson
$376

momondo Fare Finder

 
Use the filters below to find and compare flights from Knoxville to Seattle that are best for you.

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Route

Depart

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Price

Cheapest round-trip

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Thu 10/22

6:30 am-3:12 pm

1 stop11h 42m

Seattle/Tacoma Intl

Sat 10/31

4:27 pm-2:11 pm

1 stop18h 44m

$195

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Thu 10/22

6:30 am-3:12 pm

1 stop11h 42m

Seattle/Tacoma Intl

Sat 10/31

4:27 pm-2:11 pm

1 stop18h 44m

$201

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Sat 1/16

4:20 pm-10:31 pm

1 stop9h 11m

Seattle/Tacoma Intl

Thu 1/21

10:22 am-11:11 pm

1 stop9h 49m

$337

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Tue 11/10

10:10 am-6:10 pm

1 stop11h 00m

Seattle/Tacoma Intl

Tue 11/17

12:38 pm-10:48 pm

1 stop7h 10m

$337

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Thu 10/29

6:45 am-12:19 pm

1 stop8h 34m

Seattle/Tacoma Intl

Thu 10/29

10:56 pm-9:53 am

1 stop7h 57m

$337

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Tue 10/6

6:00 am-11:27 am

1 stop8h 27m

Seattle/Tacoma Intl

Tue 10/13

11:14 pm-10:37 am

1 stop8h 23m

$337

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Thu 10/1

4:40 pm-11:58 pm

1 stop10h 18m

Seattle/Tacoma Intl

Mon 10/5

11:05 pm-10:20 am

1 stop8h 15m

$337
Quickest round-trip

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Thu 10/8

5:18 pm-10:05 pm

1 stop7h 47m

Seattle/Tacoma Intl

Mon 10/12

10:35 pm-9:34 am

1 stop7h 59m

$337

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Tue 12/15

2:40 pm-10:30 pm

2 stops10h 50m

Seattle/Tacoma Intl

Mon 1/4

12:15 am-12:20 pm

2 stops9h 05m

$347

KnoxvilleSeattle

TYS Knoxville McGhee Tyson - SEA Seattle/Tacoma Intl

TYSSEA

Knoxville McGhee Tyson

Tue 11/10

7:05 am-7:00 pm

2 stops14h 55m

Seattle/Tacoma Intl

Tue 11/17

6:10 am-3:30 pm

1 stop6h 20m

$348

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 Seattle from

How to get the cheapest flight ticket from Knoxville to Seattle

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 typical price of a round-trip flight between Knoxville and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $396 to $622.
The lowest price recently found on this route was $195.

What is the cheapest month to fly to Seattle?

In general, November is the cheapest month to fly from Knoxville to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $436. If you don’t want to visit Seattle in November, then you should wait until September to fly from Knoxville, when ticket prices are also cheap, with an average price of $486.

How far in advance should I book a flight from Knoxville to Seattle?

You are more likely to see cheaper flights to Seattle from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $558 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Knoxville for as low as $432 on momondo.

How have Knoxville to Seattle flight prices changed over time?

As of September 2026, prices for Knoxville to Seattle flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Knoxville to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Seattle (TYS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Seattle

Best Price Found

$148

Fastest flight time

8h 22m

Direct flights

None
The best one-way flight to Seattle from Knoxville in the past 72 hours is $148. The best round-trip flight deal from Knoxville to Seattle found on momondo in the last 72 hours is $195.
The fastest flight from Knoxville to Seattle takes 8h 22m
There are no direct flights from Knoxville to Seattle. There are no popular flight routes from Knoxville to Seattle.
Search flight deals

Frequently asked questions about flying from Knoxville to Seattle

  • How far is Knoxville McGhee Tyson to Seattle/Tacoma Intl by plane?

    The distance between Knoxville McGhee Tyson and Seattle/Tacoma Intl is about 2108.9 mi. Flights usually cover this in 8h 22m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Seattle/Tacoma Intl Airport?

    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 Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Knoxville to Seattle?

Best airlines flying from Knoxville to Seattle

Compare and see reviews for airlines that fly from Knoxville to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $358Free CancellationRating
7.4
10,173 reviews
Search United Airlines flights
DeltaPriceFrom $372Free CancellationRating
7.8
8,554 reviews
Search Delta flights
American AirlinesPriceFrom $384Free CancellationRating
7.1
12,041 reviews
Search American Airlines flights
SouthwestPriceFrom $386Free CancellationRating
8.0
4,199 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $603Free CancellationRating
7.9
12,885 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Kent
Olympia
Redmond
Lakewood
Federal Way
Fife
Tukwila
Puyallup
Lynnwood
Cle Elum
Marysville
Kirkland
Centralia
Lacey
Shoreline

Why use momondo?

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

Finding the right flight to Seattle from Knoxville is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

Yes. All flights to Seattle from Knoxville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Seattle 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 Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Knoxville to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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