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Cheap flights from Seattle to Knoxville from $165

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
9:45 am - 9:29 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
8h 44m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:30 pm - 11:57 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
8h 27m1 stop Minneapolis St Paul
$337Delta
Thu, Nov 12 - Tue, Nov 17
Delta Logo
11:45 pm - 11:28 amSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
8h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:43 am - 6:37 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
9h 54m1 stop Detroit Metropolitan Wayne County
$337Delta
Thu, Nov 12 - Tue, Nov 17
American Airlines Logo
6:14 am - 4:29 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
7h 15m1 stop Chicago O'Hare Intl
American Airlines Logo
11:44 am - 4:54 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
8h 10m1 stop Dallas/Fort Worth
$337American Airlines
Thu, Dec 10 - Tue, Dec 15
Southwest Logo
6:10 am - 3:30 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
6h 20m1 stop Denver Intl
Southwest Logo
2:40 pm - 10:15 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
10h 35m2 stops Dallas Love Field Las Vegas Harry Reid Intl
$342Southwest
Thu, Dec 10 - Tue, Dec 15
Southwest Logo
6:50 am - 5:45 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
7h 55m2 stops Denver Intl Nashville Intl
Southwest Logo
6:50 am - 5:00 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
13h 10m1 stop Nashville Intl
$348Southwest
Sat, Sep 19 - Sat, Sep 26
American Airlines Logo
6:18 am - 4:11 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
6h 53m1 stop Chicago O'Hare Intl
American Airlines Logo
6:15 am - 11:25 amTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
8h 10m1 stop Charlotte Douglas
$360American Airlines
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
8:00 am - 7:17 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
8h 17m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
1:55 pm - 9:12 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
10h 17m2 stops Chicago O'Hare Intl Denver Intl
$416United Airlines
Sat, Jan 9 - Tue, Jan 12
United Airlines Logo
11:13 pm - 9:45 amSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
7h 32m1 stop Chicago O'Hare Intl
United Airlines Logo
11:59 am - 7:17 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
10h 18m1 stop Houston George Bush Intcntl
$418United Airlines
Mon, Oct 12 - Wed, Nov 18
Alaska Airlines Logo
11:54 am - 11:59 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
9h 05m2 stops Boise Air Term. Gowen Fld Chicago O'Hare Intl
Alaska Airlines Logo
5:30 am - 2:13 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
11h 43m2 stops Dallas/Fort Worth San Diego
$644Alaska Airlines
Wed, Feb 3 - Sat, Feb 6
Alaska Airlines Logo
8:00 am - 9:33 pmSEA  Seattle/Tacoma Intl-TYS Knoxville McGhee Tyson
10h 33m1 stop Washington, D.C. Reagan-National
Alaska Airlines Logo
11:44 am - 6:12 pmTYS  Knoxville McGhee Tyson-SEA Seattle/Tacoma Intl
9h 28m1 stop Dallas/Fort Worth
$707Alaska Airlines
Tue, Oct 27 - Thu, Nov 12

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United Airlines flights from Seattle to Knoxville

Our best United Airlines deals on Seattle to Knoxville flight tickets
United Airlines
Sep 9
SEA11:03 amSeattle/Tacoma Intl
8h 41m
1 stop
TYS10:44 pmKnoxville McGhee Tyson
Oct 27
TYS5:40 pmKnoxville McGhee Tyson
9h 19m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$374
United Airlines
Sep 9
SEA9:00 amSeattle/Tacoma Intl
10h 44m
2 stops
TYS10:44 pmKnoxville McGhee Tyson
Oct 27
TYS10:45 amKnoxville McGhee Tyson
7h 47m
1 stop
SEA3:32 pmSeattle/Tacoma Intl
$379
United Airlines
Sep 9
SEA11:03 amSeattle/Tacoma Intl
8h 41m
1 stop
TYS10:44 pmKnoxville McGhee Tyson
Sep 12
TYS6:00 amKnoxville McGhee Tyson
8h 32m
1 stop
SEA11:32 amSeattle/Tacoma Intl
$411

Delta flights from Seattle to Knoxville

Our best Delta deals on Seattle to Knoxville flight tickets
Delta
Nov 12
SEA9:45 amSeattle/Tacoma Intl
8h 44m
1 stop
TYS9:29 pmKnoxville McGhee Tyson
Nov 17
TYS6:30 pmKnoxville McGhee Tyson
8h 27m
1 stop
SEA11:57 pmSeattle/Tacoma Intl
$337
Delta
Oct 21
SEA6:00 amSeattle/Tacoma Intl
9h 24m
1 stop
TYS6:24 pmKnoxville McGhee Tyson
Oct 27
TYS7:16 pmKnoxville McGhee Tyson
7h 43m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$411
Delta
Oct 12
SEA10:35 pmSeattle/Tacoma Intl
7h 59m
1 stop
TYS9:34 amKnoxville McGhee Tyson
Oct 14
TYS6:23 pmKnoxville McGhee Tyson
8h 29m
1 stop
SEA11:52 pmSeattle/Tacoma Intl
$418

momondo Fare Finder

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

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Route

Depart

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Price

Cheapest round-trip

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Thu 11/12

9:45 am-9:29 pm

1 stop8h 44m

Knoxville McGhee Tyson

Tue 11/17

6:30 pm-11:57 pm

1 stop8h 27m

$337

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Thu 11/12

11:45 pm-11:28 am

1 stop8h 43m

Knoxville McGhee Tyson

Tue 11/17

11:43 am-6:37 pm

1 stop9h 54m

$337

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Thu 12/10

6:14 am-4:29 pm

1 stop7h 15m

Knoxville McGhee Tyson

Tue 12/15

11:44 am-4:54 pm

1 stop8h 10m

$337

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Thu 12/10

6:10 am-3:30 pm

1 stop6h 20m

Knoxville McGhee Tyson

Tue 12/15

2:40 pm-10:15 pm

2 stops10h 35m

$342

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Sat 9/19

6:50 am-5:45 pm

2 stops7h 55m

Knoxville McGhee Tyson

Sat 9/26

6:50 am-5:00 pm

1 stop13h 10m

$348
Quickest round-trip

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Sat 9/19

6:18 am-4:11 pm

1 stop6h 53m

Knoxville McGhee Tyson

Wed 9/23

6:15 am-11:25 am

1 stop8h 10m

$360

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Sat 1/9

8:00 am-7:17 pm

1 stop8h 17m

Knoxville McGhee Tyson

Tue 1/12

1:55 pm-9:12 pm

2 stops10h 17m

$416

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Mon 10/12

11:13 pm-9:45 am

1 stop7h 32m

Knoxville McGhee Tyson

Wed 11/18

11:59 am-7:17 pm

1 stop10h 18m

$418

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Wed 2/3

11:54 am-11:59 pm

2 stops9h 05m

Knoxville McGhee Tyson

Sat 2/6

5:30 am-2:13 pm

2 stops11h 43m

$644

SeattleKnoxville

SEA Seattle/Tacoma Intl - TYS Knoxville McGhee Tyson

SEATYS

Seattle/Tacoma Intl

Tue 10/27

8:00 am-9:33 pm

1 stop10h 33m

Knoxville McGhee Tyson

Thu 11/12

11:44 am-6:12 pm

1 stop9h 28m

$707

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 Knoxville from

How to get the cheapest flight ticket from Seattle to Knoxville

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 Seattle and Knoxville?

Prices are currently low for flights on this route.

Typical prices usually range from $392 to $576.
The lowest price recently found on this route was $337.

What is the cheapest month to fly to Knoxville?

The month of September is, on average, the cheapest month to fly to Knoxville from Seattle, with most prices found around $468. If you aren’t able to travel during the month of September, then book flights to Knoxville from Seattle during January instead. Flights to Knoxville in January, while not as cheap as those in September, still average around $477.

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

You are more likely to see cheaper flights to Knoxville from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $545 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Seattle for as low as $388 on momondo.

How have Seattle to Knoxville flight prices changed over time?

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

When to book flights from Seattle to Knoxville

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

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

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

Best Price Found

$165

Fastest flight time

5h 50m

Direct flights

None
The best one-way flight to Knoxville from Seattle in the past 72 hours is $165. The best round-trip flight deal from Seattle to Knoxville found on momondo in the last 72 hours is $337.
The fastest flight from Seattle to Knoxville takes 5h 50m
There are no direct flights from Seattle to Knoxville. There are no popular flight routes from Seattle to Knoxville.
Search flight deals

Frequently asked questions about flying from Seattle to Knoxville

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

    Seattle/Tacoma Intl and Knoxville McGhee Tyson are 2108.9 mi apart from one another. In terms of flight time, this usually takes a little over 5h 50m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Knoxville McGhee Tyson Airport were last updated today.

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

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

  • What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

    The required travel and health documents for your Knoxville McGhee Tyson 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 Knoxville McGhee Tyson 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 Seattle to Knoxville?

Best airlines flying from Seattle to Knoxville

Compare and see reviews for airlines that fly from Seattle to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $336Free CancellationRating
7.8
8,536 reviews
Search Delta flights
United AirlinesPriceFrom $354Free CancellationRating
7.4
10,152 reviews
Search United Airlines flights
American AirlinesPriceFrom $388Free CancellationRating
7.1
12,026 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $641Free CancellationRating
7.9
12,864 reviews
Search Alaska Airlines flights

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Alcoa
Maryville
Crossville
Murphy
Oak Ridge
Kodak
Newport
Dandridge
Lenoir City
Clinton
Rockford
Jefferson City

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Knoxville. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Knoxville from Seattle which offer a flexible booking policy as well as other useful filters and features.

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

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

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

If you are simply researching potential flights to Knoxville, momondo offers a useful price alert feature which will track prices for flights to Knoxville from Seattle and alert you when they change.

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