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Cheap flights from Seattle to Knoxville from $188

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 7/15. 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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Find the cheapest flights from Seattle to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:53 pm - 1:57 pm
SEA
-
TYS
14h 04m
1 stop
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$338Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
American Airlines Logo
7:10 am - 5:36 pm
SEA
-
TYS
7h 26m
1 stop
American Airlines Logo
1:53 pm - 7:11 pm
TYS
-
SEA
8h 18m
1 stop
$376American Airlines
Wed, Jul 22 - Wed, Jul 29
Frontier Logo
7:41 pm - 7:37 pm
SEA
-
TYS
20h 56m
1 stop
Frontier Logo
8:32 pm - 2:18 pm
TYS
-
SEA
20h 46m
1 stop
$383Frontier
Tue, Jun 16 - Fri, Jun 19
Multiple Airlines Logo
7:06 pm - 1:51 pm
SEA
-
TYS
15h 45m
1 stop
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$386Multiple Airlines
Wed, Jul 22 - Mon, Jul 27
Delta Logo
5:20 am - 3:18 pm
SEA
-
TYS
6h 58m
1 stop
Delta Logo
5:40 am - 12:13 pm
TYS
-
SEA
9h 33m
1 stop
$389Delta
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
8:13 pm - 1:51 pm
SEA
-
TYS
14h 38m
2 stops
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$390Multiple Airlines
Wed, Jul 22 - Mon, Jul 27
Multiple Airlines Logo
8:53 pm - 1:57 pm
SEA
-
TYS
14h 04m
1 stop
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$396Multiple Airlines
Thu, Jul 23 - Mon, Jul 27
Multiple Airlines Logo
8:13 pm - 1:51 pm
SEA
-
TYS
14h 38m
2 stops
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$402Multiple Airlines
Wed, Jul 22 - Mon, Jul 27
Multiple Airlines Logo
12:35 pm - 1:51 pm
SEA
-
TYS
22h 16m
1 stop
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$405Multiple Airlines
Wed, Jul 22 - Mon, Jul 27
Multiple Airlines Logo
8:13 pm - 1:51 pm
SEA
-
TYS
14h 38m
2 stops
Multiple Airlines Logo
2:47 pm - 10:39 am
TYS
-
SEA
22h 52m
1 stop
$408Multiple Airlines
Wed, Jul 22 - Mon, Jul 27

American Airlines flights from Seattle to Knoxville

Our best American Airlines deals on Seattle to Knoxville flight tickets
American Airlines
Jul 22
SEA7:10 amSeattle/Tacoma Intl
7h 26m
1 stop
TYS5:36 pmKnoxville McGhee Tyson
Jul 29
TYS1:53 pmKnoxville McGhee Tyson
8h 18m
1 stop
SEA7:11 pmSeattle/Tacoma Intl
$376
American Airlines
Sep 16
SEA8:20 amSeattle/Tacoma Intl
8h 53m
1 stop
TYS8:13 pmKnoxville McGhee Tyson
Sep 22
TYS4:46 pmKnoxville McGhee Tyson
9h 11m
1 stop
SEA10:57 pmSeattle/Tacoma Intl
$389
American Airlines
Nov 12
SEA5:24 amSeattle/Tacoma Intl
9h 04m
1 stop
TYS5:28 pmKnoxville McGhee Tyson
Nov 17
TYS6:30 amKnoxville McGhee Tyson
9h 23m
1 stop
SEA12:53 pmSeattle/Tacoma Intl
$393

Delta flights from Seattle to Knoxville

Our best Delta deals on Seattle to Knoxville flight tickets
Delta
Sep 16
SEA6:00 amSeattle/Tacoma Intl
6h 25m
1 stop
TYS3:25 pmKnoxville McGhee Tyson
Sep 21
TYS6:35 amKnoxville McGhee Tyson
7h 04m
1 stop
SEA10:39 amSeattle/Tacoma Intl
$402
Delta
Oct 3
SEA9:20 pmSeattle/Tacoma Intl
8h 51m
1 stop
TYS9:11 amKnoxville McGhee Tyson
Oct 8
TYS5:15 pmKnoxville McGhee Tyson
7h 50m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
$415
Delta
Jul 22
SEA5:20 amSeattle/Tacoma Intl
9h 35m
1 stop
TYS5:55 pmKnoxville McGhee Tyson
Jul 27
TYS10:26 amKnoxville McGhee Tyson
7h 24m
1 stop
SEA2:50 pmSeattle/Tacoma Intl
$423

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 May 25, 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

Cheapest round-trip

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 8/6

8:53 pm-1:57 pm

1 stop14h 04m

Knoxville McGhee Tyson

Mon 8/10

2:47 pm-10:39 am

1 stop22h 52m

$338
Quickest round-trip

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 7/22

7:10 am-5:36 pm

1 stop7h 26m

Knoxville McGhee Tyson

Wed 7/29

1:53 pm-7:11 pm

1 stop8h 18m

$376

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Tue 6/16

7:41 pm-7:37 pm

1 stop20h 56m

Knoxville McGhee Tyson

Fri 6/19

8:32 pm-2:18 pm

1 stop20h 46m

$383

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 7/22

7:06 pm-1:51 pm

1 stop15h 45m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-10:39 am

1 stop22h 52m

$386

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Tue 7/21

5:20 am-3:18 pm

1 stop6h 58m

Knoxville McGhee Tyson

Tue 7/28

5:40 am-12:13 pm

1 stop9h 33m

$389

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 7/22

8:13 pm-1:51 pm

2 stops14h 38m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-10:39 am

1 stop22h 52m

$390

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Thu 7/23

8:53 pm-1:57 pm

1 stop14h 04m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-10:39 am

1 stop22h 52m

$396

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 7/22

8:13 pm-1:51 pm

2 stops14h 38m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-10:39 am

1 stop22h 52m

$402

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 7/22

12:35 pm-1:51 pm

1 stop22h 16m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-10:39 am

1 stop22h 52m

$405

SeattleKnoxville

SEA - TYS

SEATYS

Seattle/Tacoma Intl

Wed 7/22

8:13 pm-1:51 pm

2 stops14h 38m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-10:39 am

1 stop22h 52m

$408

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?

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 $460. If you aren’t able to travel during the month of August, then book flights to Knoxville from Seattle during July instead. Flights to Knoxville in July, while not as cheap as those in August, still average around $505.

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 $553 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 $308 on momondo.

How have Seattle to Knoxville flight prices changed over time?

As of May 2026, prices for Seattle to Knoxville flights are approximately 30% 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 58m

Direct flights

None
The fastest flight from Seattle to Knoxville takes 6h 58m
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 6h 58m.

  • 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
American AirlinesPriceFrom $308Free CancellationRating
7.1
11,629 reviews
Search American Airlines flights
DeltaPriceFrom $323Free CancellationRating
7.9
8,429 reviews
Search Delta flights
United AirlinesPriceFrom $360Free CancellationRating
7.4
9,749 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $483Free CancellationRating
7.9
12,416 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
Lenoir City
Dandridge
Clinton
Jefferson City
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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