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Cheap flights from Seattle to Knoxville from $135

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 5/4. 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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Knoxville.
 Logo
8:56 pm - 9:59 pmSEA-TYS
22h 03m1 stop
 Logo
12:50 pm - 11:35 amTYS-SEA
25h 45m1 stop
Thu, May 1 - Mon, May 5
 Logo
8:56 pm - 9:59 pmSEA-TYS
22h 03m1 stop
 Logo
10:53 am - 12:56 amTYS-SEA
41h 03m2 stops
Thu, May 1 - Mon, May 5
 Logo
8:56 pm - 9:59 pmSEA-TYS
22h 03m1 stop
 Logo
5:15 pm - 12:56 amTYS-SEA
34h 41m3 stops
Thu, May 1 - Mon, May 5
American Airlines Logo
6:20 am - 7:25 pmSEA-TYS
10h 05m1 stop
American Airlines Logo
5:05 am - 12:47 pmTYS-SEA
10h 42m1 stop
$367American Airlines
Find Deal
Tue, May 13 - Wed, May 14
Frontier Logo
6:25 am - 4:35 pmSEA-TYS
7h 10m1 stop
Frontier Logo
5:25 pm - 12:34 amTYS-SEA
10h 09m1 stop
$388Frontier
Find Deal
Thu, May 29 - Sun, Jun 1
American Airlines Logo
11:59 pm - 2:38 pmSEA-TYS
11h 39m1 stop
American Airlines Logo
5:05 am - 12:47 pmTYS-SEA
10h 42m1 stop
$397American Airlines
Find Deal
Tue, Apr 29 - Tue, May 6
Delta Logo
6:05 am - 5:39 pmSEA-TYS
8h 34m1 stop
Delta Logo
12:55 pm - 6:55 pmTYS-SEA
9h 00m1 stop
$457Delta
Find Deal
Sat, Apr 19 - Wed, Apr 30
United Airlines Logo
8:50 am - 10:22 pmSEA-TYS
10h 32m2 stops
United Airlines Logo
5:35 pm - 10:42 pmTYS-SEA
8h 07m1 stop
$462United Airlines
Find Deal
Tue, Apr 29 - Tue, May 6
Delta Logo
3:30 pm - 9:21 amSEA-TYS
14h 51m2 stops
Delta Logo
12:55 pm - 6:55 pmTYS-SEA
9h 00m1 stop
$481Delta
Find Deal
Sat, Apr 19 - Wed, Apr 30
United Airlines Logo
7:00 am - 10:22 pmSEA-TYS
12h 22m1 stop
United Airlines Logo
7:00 am - 6:52 pmTYS-SEA
14h 52m1 stop
$487United Airlines
Find Deal
Wed, Apr 23 - Sat, May 3

American Airlines flights from Seattle to Knoxville

Our best American Airlines deals on Seattle to Knoxville flight tickets
American Airlines
May 13
SEA6:20 amSeattle/Tacoma Intl
10h 05m
1 stop
TYS7:25 pmKnoxville McGhee Tyson
May 14
TYS5:05 amKnoxville McGhee Tyson
10h 42m
1 stop
SEA12:47 pmSeattle/Tacoma Intl
American Airlines
Apr 29
SEA11:59 pmSeattle/Tacoma Intl
11h 39m
1 stop
TYS2:38 pmKnoxville McGhee Tyson
May 6
TYS5:05 amKnoxville McGhee Tyson
10h 42m
1 stop
SEA12:47 pmSeattle/Tacoma Intl
American Airlines
May 1
SEA11:59 pmSeattle/Tacoma Intl
11h 39m
1 stop
TYS2:38 pmKnoxville McGhee Tyson
May 8
TYS5:05 amKnoxville McGhee Tyson
10h 42m
1 stop
SEA12:47 pmSeattle/Tacoma Intl

Delta flights from Seattle to Knoxville

Our best Delta deals on Seattle to Knoxville flight tickets
Delta
Apr 19
SEA6:05 amSeattle/Tacoma Intl
8h 34m
1 stop
TYS5:39 pmKnoxville McGhee Tyson
Apr 30
TYS12:55 pmKnoxville McGhee Tyson
9h 00m
1 stop
SEA6:55 pmSeattle/Tacoma Intl
Delta
Apr 19
SEA3:30 pmSeattle/Tacoma Intl
14h 51m
2 stops
TYS9:21 amKnoxville McGhee Tyson
Apr 30
TYS12:55 pmKnoxville McGhee Tyson
9h 00m
1 stop
SEA6:55 pmSeattle/Tacoma Intl
Delta
Apr 23
SEA2:00 pmSeattle/Tacoma Intl
16h 21m
2 stops
TYS9:21 amKnoxville McGhee Tyson
Apr 30
TYS12:55 pmKnoxville McGhee Tyson
9h 00m
1 stop
SEA6:55 pmSeattle/Tacoma Intl

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 May is, on average, the cheapest month to fly to Knoxville from Seattle, with most prices found around $557. If you aren’t able to travel during the month of May, then book flights to Knoxville from Seattle during August instead. Flights to Knoxville in August, while not as cheap as those in May, still average around $618.

What is the cheapest day to depart on your flight to Knoxville?

The cheapest day to depart from Seattle to Knoxville is on a Tuesday. Travelers who choose to depart for Knoxville on a Tuesday will often find tickets for as low as $596. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Knoxville for around $758.

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

In the afternoon is the cheapest time of day to fly from Seattle to Knoxville when you can find flight prices for as low as $189. Flying to Knoxville in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the morning when prices are around $656.

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 18 weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $670 when searching 18 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 $456 on momondo.

How have Seattle to Knoxville flight prices changed over time?

As of April 2025, prices for Seattle to Knoxville flights are approximately 42% 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

$135

Fastest flight time

6h 30m

Direct flights

None

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Seattle in the past 72 hours is $135. The best round-trip flight deal from Seattle to Knoxville found on momondo in the last 72 hours is $261.
The fastest flight from Seattle to Knoxville takes 6h 30m
There are no direct flights from Seattle to Knoxville. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Knoxville McGhee Tyson Airport.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)

  • 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 30m.

  • 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 $140Free CancellationRating
5.9
3,277 reviews
Search Frontier flights
American AirlinesPriceFrom $396Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $491Free CancellationRating
7.4
8,615 reviews
Search United Airlines flights
DeltaPriceFrom $518Free CancellationRating
8.0
7,899 reviews
Search Delta flights
Alaska AirlinesPriceFrom $663Free CancellationRating
8.0
9,823 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
Murphy
Crossville
Maryville
Newport
Alcoa
Oak Ridge
Kodak
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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