SEA - TYS

$187 Find Cheap Flights from Seattle to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Knoxville departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Knoxville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Knoxville, as well as popular online travel agencies
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Cheap Flight Deals from Seattle to Knoxville (SEA-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Knoxville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Seattle to Knoxville

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Knoxville.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:57 pm - 5:54 pmSEA-TYS
18h 57m3 stops
7:15 am - 11:46 amTYS-SEA
31h 31m2 stops
Wed, Mar 5 - Wed, Mar 12
12:41 pm - 11:01 amSEA-TYS
19h 20m2 stops
7:15 am - 11:46 amTYS-SEA
31h 31m2 stops
Wed, Mar 5 - Wed, Mar 12
6:12 am - 7:25 pmSEA-TYS
10h 13m1 stop
3:00 pm - 11:09 pmTYS-SEA
11h 09m1 stop
$347American Airlines
Find Deal
Wed, May 28 - Wed, Jun 4
6:12 am - 7:25 pmSEA-TYS
10h 13m1 stop
3:00 pm - 11:09 pmTYS-SEA
11h 09m1 stop
$367American Airlines
Find Deal
Wed, May 28 - Wed, Jun 4
11:59 pm - 11:00 pmSEA-TYS
20h 01m1 stop
7:00 am - 10:42 pmTYS-SEA
18h 42m1 stop
$496United Airlines
Find Deal
Sat, Feb 22 - Sat, Mar 1
4:58 pm - 11:00 pmSEA-TYS
27h 02m2 stops
7:00 am - 10:42 pmTYS-SEA
18h 42m1 stop
$501United Airlines
Find Deal
Sat, Feb 22 - Sat, Mar 1
12:00 pm - 11:07 pmSEA-TYS
8h 07m1 stop
7:50 am - 2:17 pmTYS-SEA
9h 27m1 stop
$509Delta
Find Deal
Wed, Apr 2 - Wed, Apr 9
12:00 pm - 11:07 pmSEA-TYS
8h 07m1 stop
5:45 am - 6:42 pmTYS-SEA
15h 57m2 stops
$521Delta
Find Deal
Wed, Apr 2 - Tue, Apr 8
6:00 am - 9:22 pmSEA-TYS
12h 22m2 stops
5:10 am - 10:36 amTYS-SEA
8h 26m1 stop
$814Alaska Airlines
Find Deal
Thu, Jul 3 - Tue, Jul 8
6:39 am - 9:48 pmSEA-TYS
12h 09m2 stops
12:14 pm - 8:00 pmTYS-SEA
10h 46m1 stop
$854Alaska Airlines
Find Deal
Thu, Apr 10 - Mon, Apr 14

Flights from Seattle to Knoxville - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Knoxville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Knoxville?

The average price of all round-trip flights from Seattle to Knoxville clicked on KAYAK for each day over the last 12 months.
For Seattle to Knoxville, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Knoxville back to Seattle, the best deals are generally found on Friday, with Monday being the most expensive.

What is the cheapest month to fly from Seattle to Knoxville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Knoxville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Knoxville is February, where tickets cost $609 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $758 and $747 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Knoxville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Seattle to Knoxville, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low season

January

High season

August

Cheapest flight

$187
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Seattle to Knoxville

When to book flights from Seattle to Knoxville

Are your dates flexible? Find out the best times to travel from Seattle to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Knoxville

  • Which kid-friendly options does United Airlines provide on flights from Seattle to Knoxville?

    United Airlines offers a range of kid-friendly options on flights from Seattle to Knoxville, ensuring an enjoyable journey for young travelers. Children can enjoy a variety of entertainment choices, including kid-friendly movies, TV shows, and games on personal seat back screens. Additionally, the airline offers activity kits that contain coloring books, games, and puzzles to keep children engaged during the flight.

  • Which American Airlines layovers are common on flights from Seattle to Knoxville?

    Common layovers on flights from Seattle to Knoxville with American Airlines may include cities such as Dallas-Fort Worth, Charlotte, and Chicago. These layovers often provide convenient connections for passengers traveling between the two cities. For instance, passengers may have a layover in Dallas-Fort Worth International Airport, Charlotte Douglas International Airport, or Chicago O'Hare International Airport before continuing their journey to Knoxville.

  • American Airlines uses which lounges for flights from Seattle to Knoxville?

    American Airlines offers access to several lounges for passengers flying from Seattle to Knoxville. One example is the American Airlines Admirals Club at Seattle-Tacoma International Airport. Another option is the Admirals Club at Knoxville's McGhee Tyson Airport, providing a relaxing environment before the flight. These lounges enhance the overall travel experience for American Airlines' customers on this route.

  • Which ground transportation means can I use from the airport after my flight from Seattle to Knoxville?

    After your flight from Seattle to Knoxville, you can utilize numerous public transportation options from the airport. For instance, you can hop on the McGhee Tyson Airport shuttle service, which provides convenient connections to various destinations within Knoxville. Additionally, there are local bus services like KAT (Knoxville Area Transit) that offer affordable and accessible travel throughout the city.

  • What is the cheapest flight from Seattle to Knoxville?

    In the last 3 days, the lowest price for a flight from Seattle to Knoxville was $187 for a one-way ticket and $257 for a round-trip.

  • Do I need a passport to fly between Seattle and Knoxville?

    No

  • Which airports will I be using when flying from Seattle to Knoxville?

    Seattle and Knoxville are both served by 1 main airport. You will leave Seattle from Seattle/Tacoma Intl and will be arriving at Knoxville McGhee Tyson.

  • Which aircraft models fly most regularly from Seattle to Knoxville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Knoxville?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Knoxville, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Knoxville, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Knoxville are Delta and Alaska Airlines. With an average price for the route of $749 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $857 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Seattle to Knoxville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Knoxville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Knoxville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Knoxville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Knoxville with an airline and back to Seattle with another airline. Booking your flights between Seattle and TYS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Knoxville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Knoxville from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Knoxville

  • United Airlines has specific pet restrictions for flights from Seattle (SEA) to Knoxville (TYS). Only cats and dogs are allowed as in-cabin pets, while other animals must be transported in the cargo hold. In-cabin pets must be small enough to fit comfortably in a carrier under the seat in front of you. The weight limit for pets in the cabin is typically 20 lbs., including the weight of the carrier.
  • Passengers flying United Airlines from Seattle to Knoxville can pre-select their seats. When booking their tickets or managing their reservations online, passengers have the option to choose their preferred seats. By pre-selecting seats, passengers can ensure their desired seating arrangements and enhance their travel experience with United Airlines.
  • United Airlines supports sustainable travel on flights from Seattle to Knoxville by implementing various eco-friendly initiatives. They utilize fuel-efficient aircraft, optimize flight routes to reduce fuel consumption, and encourage passengers to participate in their carbon offset program. By prioritizing sustainability, United Airlines strives to minimize their environmental impact and promote greener travel choices.
  • You can rent a car after your flight from Seattle to Knoxville. There are several rental companies available at Knoxville's McGhee Tyson Airport, including major brands like Hertz, Avis, Enterprise, Budget, and National Car Rental. These companies offer a range of vehicles to pick from, accommodating various budgets and preferences. Simply visit their respective counters at the airport to arrange your rental and explore Knoxville and its surroundings conveniently.
  • Frontier Airlines offers a range of in-flight entertainment amenities on their flights from Seattle to Knoxville, ensuring passengers have an enjoyable journey. Travelers can expect to find a variety of options, such as seat back screens with a selection of movies and TV shows, in-flight magazines to browse through, and even free internet connectivity for those who prefer to stream their own entertainment on personal devices.
See more tips

Top 5 airlines serving from Seattle to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Knoxville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Knoxville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9688 reviews
8.5Crew
7.1Food
7.1Entertainment
8.2Boarding
7.9Comfort
Airline reviews

I would probably fly with them again. It was a smooth process.

8.0 ExcellentScott, Jan 2025SEA - IAD
Read more Alaska Airlines reviews

I would probably fly with them again. It was a smooth process.

Crew was great, flight was uneventful (which is what you want!), would like media in the seat backs in all airplanes ..but all in all it was a good flight experience.

Unfortunately, an issue occurred where a delay impeded me from making my connection in LA. I couldn't get a flight home until 10 hours after my originally scheduled flight. Once I finally made it to DFW for my connecting flight, my next flight was delayed. I was supposed to be home on 12/23 at 9:00 p.m. I didn't make it home until 12/24 at 11:00 a.m. I was given the choice to either take a flight the next day or the flight that way 10 hours later. I wasn't given an option for a hotel if I stayed overnight. I was also denied the ability to go to the Alaska Lounge due to the delay. It was a very uncomfortable experience. The only seat I was able to get on the next flight was in a row where the seats couldn't recline. After an extended wait at the airport, this was very frustrating!

We don't have food or entertainment on this flight. We were late boarding but then arrived in Yakima early. Kayak sent me a delay notice but we weren't delayed.

I paid $49 to select my seat---6A a window seat just behind first class. When I started to get on the plane I was told that my seat had been given to someone else and I now had a middle seat. They finally gave me an aisle seat. When I told them I wanted my $49 back, I was told I would need to call alaska and fight with them to get my money back. And when i was on the flight people going by kept hitting me with their bags. I have tried calling alaska twice to talk about a refund but never got thru to the right person!

Flight crew had the courtesy to ask passengers from my first flight to allow those of us disembarking to go first so that we could make it onto our connecting flights. Worked like a charm. Both crew and fellow passengers working together for a better outcome for all.

We missed our connection to Portland and ended up having to drive.

Spent extra to choose my seat. Found a window available so grabbed it. They did not mention the row didn’t recline. Had over 5 hour flight stuck in a straight back chair. Traveling for funeral - needed to rest and couldn’t get comfortable (row infront of exit😒 should have realized but wasn’t thinking I guess).

You an Kayak offered travel insurance. I had to cancel are flights which I well say was easy an I got my money back. BUT not the travel insurance Kayak or X cover has keep the money. So why I never went on the fligt I cancel way early. I know one thing I'll never go to kayak again.

Check-in was easy, I did it from the app. Boarding was easy, the crew was great. Santa Barbara airport had a disabled plane so we had to land in Burbank to refuel. They kept us well informed, and everyone was great. A very entertaining person from the Burbank airport got on and told a few jokes.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Flight left early and arrived early. the whole trip was excellent.

Seats were really tight and the seat belts did not give enough slack.

I like in St George and prefer to fly out of CDC than SGU. Hopefully, they will continue the flights out of Cedar

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

Most of my discomfort was going through TSA. However, the Delta seats had inadequate leg room and I tried my very best to connect to the wi-fi and it was a cumbersome process that finally gave me the info that I needed to sign in AFTER I had completed the flight...Why make it so difficult to use? That said I really really appreciate the pilot taking a little extra time to avoid a bad storm area and both landings in Atlanta and Orlando were flawless to my delight!!!

Bottom seat cushion is almost non existent. Very uncomfortable seat.

Coach seating is debilitating, neither my husband or I can walk the following day

Food choices were very limited. Taste of the dishes was average.

Maybe add a seat trade app for flyers that didn’t get seats together

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

I liked all the informational texts. I always knew where to go and when .

Liked the hospitality . The ight took us 6 hrs to get from fort myers to ewr.

This was a pleasant, short flight and the crew was friendly.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

It was good. It’s been a long time since my wife and I fly any where and things have changed. Our trip was to see our new grandson. We fly economy and that was not good for my bad back. It was a quick flight but uncomfortable.

I paid for what I got which was cheap, I brought my own entertainment. I knew what to expect, so I could be prepared. If you’re flying economy, check in early like me. I have no problems with my flight, was on time, staff were friendly, and overall good experience.

Boarded over an hour late, no communication, the sign just changed, no attendant to answer questions - she disappeared forever (hiding). Small plane and couldn’t hear the overhead nor understand.

Service in first class no longer exists on American Airlines .

Customer service in first class does not exist on American Airlines

I never have a good experience with American and this was no different. The airplane was INCREDIBLY hot. Like unbearably so. Everyone was fanning themselves with pamphlets and sweating. When someone asked the flight attendant to turn down the temperature they were told there was nothing the crew could do. Once we pushed back from the gate we then had to wait an hour to take off and the communication from the crew was not good. People were getting up this whole time and a man was even in the bathroom when we took off. Once we landed at our destination we waited another 30 minutes at the gate to deplane with, again, no communication from the crew as to what was going on.

Flight was delayed due to a steering issue with plane. The delay caused me to miss the connecting flight. The delay caused me to spend an extra 21 hours in airports and flights to get to my destination. The plane issue obviously should have been found and fixed before we even boarded. Ridiculous.

First, to be fair, the flight was on time and the trip through the air was relatively smooth. But the flight was full, and they were checking carryons. As this process went on, the crew got increasingly rude and overbearing. During the drink service, a young girl (maybe 9) who had gotten up to use the lavatory got stuck behind the cart. At some point, she started feeling fearful and overwhelmed. Passengers noticed this and asked the crew to let her return to her seat. They refused. Then she started crying, and they still refused to move the cart forward to let her sit. The poor girl was trying to be brave and compose herself. The crew handled the situation terribly and with zero grace or decency. That episode, to me, encapsulates AA’s attitude toward its passengers. Disgraceful. The plane itself was cramped and miserable, as usual. There was zero inflight media or entertainment, other than the lane and borderline inappropriate jokes the steward made during the safety briefing. Then, of course, it took the better part of an hour for the checked bags to show up at the carousel. AA is no better than the el cheapo airlines these days and a far, far cry from its former self.

Very easy with the app to board and staff skills

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

My experience with the phoenix airport was terrible, the personnel lay the ticket counter charged me for a carry on that fit in the carry on size box, and the two women I spoke with were terribly rude and not willing to help.,,, there was one lady “candy” on the flight crew that was amazing and is the only reason I stayed on the flight at all, because the other stewards helping people to get seated on the plane were terrible

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

The seats were extremely hard and uncomfortable, even for a budget airline.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Charging $74 for one checked bag is outrageous. I will never fly Frontier again.

Boarding was very well executed. Got my bag right away.

I was surprised that all baggage, including carry on, were charged. Each additional bag went up in cost. Really disappointed in the additional costs.

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