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Cheap flights from Seattle to Knoxville from $161

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Knoxville departing on 2/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:16 pm - 7:27 pm
SEA
-
TYS
27h 11m1 stop
Multiple Airlines Logo
1:40 pm - 10:54 am
TYS
-
SEA
24h 14m1 stop
$243Multiple Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
1:16 pm - 4:59 pm
SEA
-
TYS
24h 43m2 stops
Multiple Airlines Logo
1:40 pm - 10:54 am
TYS
-
SEA
24h 14m1 stop
$263Multiple Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
1:16 pm - 7:27 pm
SEA
-
TYS
27h 11m1 stop
Multiple Airlines Logo
10:56 am - 8:13 am
TYS
-
SEA
24h 17m2 stops
$268Multiple Airlines
Thu, Feb 19 - Wed, Feb 25
American Airlines Logo
8:04 am - 10:09 pm
SEA
-
TYS
11h 05m1 stop
American Airlines Logo
11:42 am - 11:04 pm
TYS
-
SEA
14h 22m1 stop
$271American Airlines
Wed, Feb 11 - Sun, Feb 15
Multiple Airlines Logo
1:16 pm - 6:06 pm
SEA
-
TYS
25h 50m1 stop
Multiple Airlines Logo
10:00 am - 11:01 am
TYS
-
SEA
28h 01m2 stops
$274Multiple Airlines
Thu, Feb 26 - Wed, Mar 4
Multiple Airlines Logo
12:00 pm - 7:18 pm
SEA
-
TYS
28h 18m1 stop
Multiple Airlines Logo
8:30 am - 8:13 am
TYS
-
SEA
26h 43m1 stop
$276Multiple Airlines
Sun, Feb 22 - Thu, Feb 26
Multiple Airlines Logo
1:16 pm - 7:27 pm
SEA
-
TYS
27h 11m1 stop
Multiple Airlines Logo
5:53 pm - 12:01 pm
TYS
-
SEA
45h 08m2 stops
$288Multiple Airlines
Thu, Feb 19 - Thu, Feb 26
Multiple Airlines Logo
1:16 pm - 7:27 pm
SEA
-
TYS
27h 11m1 stop
Multiple Airlines Logo
8:30 am - 8:13 am
TYS
-
SEA
26h 43m1 stop
$292Multiple Airlines
Thu, Feb 19 - Thu, Feb 26
Multiple Airlines Logo
1:16 pm - 6:06 pm
SEA
-
TYS
25h 50m1 stop
Multiple Airlines Logo
7:17 pm - 10:19 am
TYS
-
SEA
42h 02m2 stops
$294Multiple Airlines
Thu, Feb 26 - Fri, Mar 6
American Airlines Logo
12:07 am - 6:37 pm
SEA
-
TYS
15h 30m1 stop
American Airlines Logo
4:02 pm - 12:24 am
TYS
-
SEA
11h 22m1 stop
$296American Airlines
Fri, Feb 20 - Tue, Feb 24

American Airlines flights from Seattle to Knoxville

Our best American Airlines deals on Seattle to Knoxville flight tickets
American Airlines
Feb 11
SEA8:04 amSeattle/Tacoma Intl
11h 05m
1 stop
TYS10:09 pmKnoxville McGhee Tyson
Feb 15
TYS11:42 amKnoxville McGhee Tyson
14h 22m
1 stop
SEA11:04 pmSeattle/Tacoma Intl
$271
American Airlines
Feb 20
SEA12:07 amSeattle/Tacoma Intl
15h 30m
1 stop
TYS6:37 pmKnoxville McGhee Tyson
Feb 24
TYS4:02 pmKnoxville McGhee Tyson
11h 22m
1 stop
SEA12:24 amSeattle/Tacoma Intl
$296
American Airlines
Feb 10
SEA8:04 amSeattle/Tacoma Intl
11h 05m
1 stop
TYS10:09 pmKnoxville McGhee Tyson
Feb 14
TYS11:42 amKnoxville McGhee Tyson
15h 42m
1 stop
SEA12:24 amSeattle/Tacoma Intl
$333

United Airlines flights from Seattle to Knoxville

Our best United Airlines deals on Seattle to Knoxville flight tickets
United Airlines
Feb 4
SEA9:00 amSeattle/Tacoma Intl
10h 31m
2 stops
TYS10:31 pmKnoxville McGhee Tyson
Feb 11
TYS1:59 pmKnoxville McGhee Tyson
7h 15m
1 stop
SEA6:14 pmSeattle/Tacoma Intl
$326
United Airlines
Feb 18
SEA8:17 amSeattle/Tacoma Intl
8h 12m
1 stop
TYS7:29 pmKnoxville McGhee Tyson
Feb 21
TYS2:21 pmKnoxville McGhee Tyson
9h 35m
1 stop
SEA8:56 pmSeattle/Tacoma Intl
$379
United Airlines
Feb 18
SEA11:59 pmSeattle/Tacoma Intl
7h 20m
1 stop
TYS10:19 amKnoxville McGhee Tyson
Feb 21
TYS9:40 amKnoxville McGhee Tyson
12h 23m
2 stops
SEA7:03 pmSeattle/Tacoma Intl
$384

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Knoxville 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 January 8, 2026.
Use the filters below to find and compare flights from Seattle to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/19

1:16 pm-7:27 pm

1 stop27h 11m

Knoxville McGhee Tyson

Mon 2/23

1:40 pm-10:54 am

1 stop24h 14m

$243

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/19

1:16 pm-4:59 pm

2 stops24h 43m

Knoxville McGhee Tyson

Mon 2/23

1:40 pm-10:54 am

1 stop24h 14m

$263

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/19

1:16 pm-7:27 pm

1 stop27h 11m

Knoxville McGhee Tyson

Wed 2/25

10:56 am-8:13 am

2 stops24h 17m

$268

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 2/11

8:04 am-10:09 pm

1 stop11h 05m

Knoxville McGhee Tyson

Sun 2/15

11:42 am-11:04 pm

1 stop14h 22m

$271

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/26

1:16 pm-6:06 pm

1 stop25h 50m

Knoxville McGhee Tyson

Wed 3/4

10:00 am-11:01 am

2 stops28h 01m

$274

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Sun 2/22

12:00 pm-7:18 pm

1 stop28h 18m

Knoxville McGhee Tyson

Thu 2/26

8:30 am-8:13 am

1 stop26h 43m

$276

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/19

1:16 pm-7:27 pm

1 stop27h 11m

Knoxville McGhee Tyson

Thu 2/26

5:53 pm-12:01 pm

2 stops45h 08m

$288

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/19

1:16 pm-7:27 pm

1 stop27h 11m

Knoxville McGhee Tyson

Thu 2/26

8:30 am-8:13 am

1 stop26h 43m

$292

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 2/26

1:16 pm-6:06 pm

1 stop25h 50m

Knoxville McGhee Tyson

Fri 3/6

7:17 pm-10:19 am

2 stops42h 02m

$294

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Fri 2/20

12:07 am-6:37 pm

1 stop15h 30m

Knoxville McGhee Tyson

Tue 2/24

4:02 pm-12:24 am

1 stop11h 22m

$296

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 cheapest month to fly to Knoxville?

The month of August is, on average, the cheapest month to fly to Knoxville from Seattle, with most prices found around $462. If you aren’t able to travel during the month of August, then book flights to Knoxville from Seattle during September instead. Flights to Knoxville in September, while not as cheap as those in August, still average around $490.

How far in advance should I book a flight 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 $562 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 $391 on momondo.

How have Seattle to Knoxville flight prices changed over time?

As of January 2026, prices for Seattle to Knoxville flights are approximately 58% 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

Fastest flight time

6h 34m

Direct flights

None
The fastest flight from Seattle to Knoxville takes 6h 34m
There are no direct flights from Seattle to Knoxville. There are no popular flight routes from Seattle to Knoxville.
Search flight deals

  • 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 6h 34m.

  • 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
FrontierPriceFrom $190Free CancellationRating
5.7
3,061 reviews
Search Frontier flights
American AirlinesPriceFrom $310Free CancellationRating
7.2
11,095 reviews
Search American Airlines flights
DeltaPriceFrom $358Free CancellationRating
7.9
8,029 reviews
Search Delta flights
United AirlinesPriceFrom $423Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $483Free CancellationRating
8.0
11,665 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
Murphy
Crossville
Oak Ridge
Newport
Lenoir City
Kodak
Dandridge
Jefferson City
Clinton
Rockford

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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