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Cheap flights from Seattle to Knoxville from $179

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 7/1. 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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Cheap round-trip flights

American Airlines Logo
11:38 pm - 9:56 amSEA-TYS
7h 18m1 stop
American Airlines Logo
6:39 pm - 11:50 pmTYS-SEA
8h 11m1 stop
$309American Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
11:54 pm - 10:11 amSEA-TYS
7h 17m1 stop
United Airlines Logo
7:00 am - 1:42 pmTYS-SEA
9h 42m2 stops
$338United Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
12:20 am - 10:17 amSEA-TYS
6h 57m1 stop
United Airlines Logo
7:00 am - 11:37 amTYS-SEA
7h 37m1 stop
$361United Airlines
Find Deal
Wed, Jul 9 - Tue, Jul 15
Delta Logo
6:00 am - 6:13 pmSEA-TYS
9h 13m1 stop
Delta Logo
7:15 pm - 12:11 amTYS-SEA
7h 56m1 stop
$374Delta
Find Deal
Wed, Oct 8 - Mon, Oct 13
American Airlines Logo
10:43 pm - 10:41 amSEA-TYS
8h 58m1 stop
American Airlines Logo
4:15 pm - 10:55 pmTYS-SEA
9h 40m1 stop
$384American Airlines
Find Deal
Tue, Jul 15 - Sun, Jul 27
Delta Logo
6:00 am - 6:13 pmSEA-TYS
9h 13m1 stop
Delta Logo
7:15 pm - 12:11 amTYS-SEA
7h 56m1 stop
$424Delta
Find Deal
Wed, Oct 8 - Mon, Oct 13
Alaska Airlines Logo
12:58 am - 1:12 pmSEA-TYS
9h 14m1 stop
Alaska Airlines Logo
6:00 am - 11:34 amTYS-SEA
8h 34m1 stop
$434Alaska Airlines
Find Deal
Mon, Sep 8 - Fri, Sep 19
Frontier Logo
7:48 pm - 4:29 pmSEA-TYS
17h 41m1 stop
Frontier Logo
5:25 pm - 12:34 amTYS-SEA
10h 09m1 stop
$495Frontier
Find Deal
Sat, Jul 26 - Sun, Aug 3
Frontier Logo
6:25 am - 4:29 pmSEA-TYS
7h 04m1 stop
Frontier Logo
5:25 pm - 12:34 amTYS-SEA
10h 09m1 stop
$505Frontier
Find Deal
Sun, Jun 29 - Thu, Jul 3
Alaska Airlines Logo
9:28 am - 10:16 pmSEA-TYS
9h 48m1 stop
Alaska Airlines Logo
4:37 pm - 10:54 pmTYS-SEA
9h 17m1 stop
$509Alaska Airlines
Find Deal
Wed, Sep 17 - Mon, Sep 22

United Airlines flights from Seattle to Knoxville

Our best United Airlines deals on Seattle to Knoxville flight tickets
United Airlines
Sep 23
SEA11:54 pmSeattle/Tacoma Intl
7h 17m
1 stop
TYS10:11 amKnoxville McGhee Tyson
Sep 30
TYS7:00 amKnoxville McGhee Tyson
9h 42m
2 stops
SEA1:42 pmSeattle/Tacoma Intl
United Airlines
Jul 9
SEA12:20 amSeattle/Tacoma Intl
6h 57m
1 stop
TYS10:17 amKnoxville McGhee Tyson
Jul 15
TYS7:00 amKnoxville McGhee Tyson
7h 37m
1 stop
SEA11:37 amSeattle/Tacoma Intl
United Airlines
Jul 9
SEA12:20 amSeattle/Tacoma Intl
6h 57m
1 stop
TYS10:17 amKnoxville McGhee Tyson
Jul 15
TYS5:45 amKnoxville McGhee Tyson
9h 05m
1 stop
SEA11:50 amSeattle/Tacoma Intl

Delta flights from Seattle to Knoxville

Our best Delta deals on Seattle to Knoxville flight tickets
Delta
Oct 8
SEA6:00 amSeattle/Tacoma Intl
9h 13m
1 stop
TYS6:13 pmKnoxville McGhee Tyson
Oct 13
TYS7:15 pmKnoxville McGhee Tyson
7h 56m
1 stop
SEA12:11 amSeattle/Tacoma Intl
Delta
Oct 8
SEA6:00 amSeattle/Tacoma Intl
9h 13m
1 stop
TYS6:13 pmKnoxville McGhee Tyson
Oct 13
TYS7:15 pmKnoxville McGhee Tyson
7h 56m
1 stop
SEA12:11 amSeattle/Tacoma Intl
Delta
Jul 16
SEA1:34 pmSeattle/Tacoma Intl
7h 25m
1 stop
TYS11:59 pmKnoxville McGhee Tyson
Jul 18
TYS5:57 pmKnoxville McGhee Tyson
8h 58m
1 stop
SEA11:55 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 April is, on average, the cheapest month to fly to Knoxville from Seattle, with most prices found around $561. If you aren’t able to travel during the month of April, then book flights to Knoxville from Seattle during May instead. Flights to Knoxville in May, while not as cheap as those in April, still average around $561.

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 weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $646 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 $497 on momondo.

How have Seattle to Knoxville flight prices changed over time?

As of June 2025, prices for Seattle to Knoxville flights are approximately 19% 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

$179

Fastest flight time

6h 57m

Direct flights

None

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Seattle in the past 72 hours is $179. The best round-trip flight deal from Seattle to Knoxville found on momondo in the last 72 hours is $309.
The fastest flight from Seattle to Knoxville takes 6h 57m
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 57m.

  • 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 $164Free CancellationRating
5.9
3,301 reviews
Search Frontier flights
American AirlinesPriceFrom $355Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $460Free CancellationRating
7.4
8,810 reviews
Search United Airlines flights
DeltaPriceFrom $460Free CancellationRating
8.0
7,964 reviews
Search Delta flights
Alaska AirlinesPriceFrom $483Free CancellationRating
8.0
10,000 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
Crossville
Maryville
Murphy
Newport
Alcoa
Oak Ridge
Lenoir City
Kodak
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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Mon 6/23
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