SEA - TYS

$170 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 4/28. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Knoxville

 
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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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$316
Typical prices: $626-$486
Multiple Airlines
Mon 5/4Mon 5/11
SEA - TYS • 2 stops
Cheapest one-way
$170
Typical prices: $303-$452
Multiple Airlines
Tue 4/28
SEA - TYS • 3 stops
Top airlines
Cheapest • from $375 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Seattle and Knoxville. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $546 (round-trip)
Shortest trip • 7h 08m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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We hope you love your trip to Knoxville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Knoxville

Mon, May 4 - Mon, May 11
Multiple Airlines Logo
7:12 pm - 3:35 pm
SEA
-
TYS
41h 23m
2 stops
Multiple Airlines Logo
8:32 pm - 9:49 am
TYS
-
SEA
16h 17m
1 stop
$316Multiple Airlines
Wed, May 20 - Tue, May 26
Multiple Airlines Logo
7:50 pm - 1:59 pm
SEA
-
TYS
15h 09m
1 stop
Multiple Airlines Logo
5:00 pm - 6:35 pm
TYS
-
SEA
52h 35m
2 stops
$325Multiple Airlines
Wed, May 27 - Mon, Jun 1
Multiple Airlines Logo
7:50 pm - 1:59 pm
SEA
-
TYS
15h 09m
1 stop
Multiple Airlines Logo
8:32 pm - 6:35 pm
TYS
-
SEA
25h 03m
2 stops
$340Multiple Airlines
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
7:50 pm - 7:33 pm
SEA
-
TYS
20h 43m
1 stop
Multiple Airlines Logo
4:31 pm - 9:49 am
TYS
-
SEA
44h 18m
2 stops
$359Multiple Airlines
Tue, May 5 - Wed, May 6
American Airlines Logo
6:00 am - 6:04 pm
SEA
-
TYS
9h 04m
1 stop
American Airlines Logo
6:00 am - 10:48 am
TYS
-
SEA
7h 48m
1 stop
$375American Airlines
Mon, May 18 - Fri, May 22
Multiple Airlines Logo
11:37 am - 10:51 pm
SEA
-
TYS
8h 14m
1 stop
Multiple Airlines Logo
7:24 pm - 10:06 am
TYS
-
SEA
41h 42m
2 stops
$378Multiple Airlines
Sun, Apr 26 - Wed, Apr 29
American Airlines Logo
12:59 am - 12:30 pm
SEA
-
TYS
8h 31m
1 stop
American Airlines Logo
4:09 pm - 10:47 pm
TYS
-
SEA
9h 38m
1 stop
$384American Airlines
Sat, May 2 - Sat, May 9
United Airlines Logo
11:53 pm - 10:06 am
SEA
-
TYS
7h 13m
1 stop
United Airlines Logo
5:55 pm - 10:47 pm
TYS
-
SEA
7h 52m
1 stop
$388United Airlines
Mon, Apr 27 - Sat, May 2
American Airlines Logo
10:29 pm - 9:57 am
SEA
-
TYS
8h 28m
1 stop
American Airlines Logo
6:00 am - 10:51 am
TYS
-
SEA
7h 51m
1 stop
$393American Airlines
Sat, May 2 - Sat, May 9
United Airlines Logo
5:05 am - 4:54 pm
SEA
-
TYS
8h 49m
2 stops
United Airlines Logo
5:55 pm - 10:47 pm
TYS
-
SEA
7h 52m
1 stop
$394United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Knoxville flights

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.

How much is a round-trip flight from Seattle to Knoxville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Knoxville departing in May.

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 August, where tickets cost $458 (return) on average. On the other hand, the most expensive months are March and April, where the average cost of round-trip tickets is $681 and $646 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 10 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$170
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 3% 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 $170 for a one-way ticket and $316 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Seattle and Knoxville, with SkyTeam 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 $581 and an overall rating of 7.9, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $757 and an overall rating of 7.9.

  • 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.

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.

Reviews of the 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.
7.9
Alaska AirlinesOverall score based on 12201 reviews
7.8Comfort
8.1Boarding
7.0Food
8.5Crew
7.0Entertainment
Airline reviews

Once we were in the air, the flight was nice and smooth. The flight was about twenty minutes late to begin with, though, and then we needed to wait to land for another plane to land first.

8.0 ExcellentRichard, Apr 2026
SEA - CVG
Read more Alaska Airlines reviews

Once we were in the air, the flight was nice and smooth. The flight was about twenty minutes late to begin with, though, and then we needed to wait to land for another plane to land first.

Flight crew great! No WiFi not great. Someone took my bag not great!

Alaska Airlines staff go out of their way to accommodate my fragile musical instrument, every time. They are unlike any other airline. I've experienced this can-do attitude on several flights with different staff, so this must be the culture of their company. I appreciate Alaska!

We never had an experience on Alaska Airlines. We missed our flight .

Flight was on time departure & arrival. Staff was efficient & attentive. Food was better than normal. Wish they had some sort of entertainment screens loke Delta. I would fly Alaska again though.

It was a bumpy flight but the crew was very attentive and made it a safe and enjoyable experience.

Very easy, stress free airline. Was a wonderful experience. Will use again

The final trip home wasn’t as bad as the trip there. Even with the paid upgrade the comfort level was mediocre at best.

I paid $129 to be upgraded to better seat only ti be completely ignored by flight attendants I think because I used the front restroom ???? I was dozing off and on but I was never once offered a beverage or snack but my seat mates were served numerous double vodkas. I want my money back. I tried to call Alaska Airlines complaints phone number and was told it was 2.5 hours to hold.

Don’t fly with Alaska if you have a layover in Seattle. Guaranteed to screw you over. We waited at terminal S3 &were >2 hours delayed(mechanical issues)and told to change terminals to a different plane that required riding 3 shuttles to get to new terminal N14. Then they delayed the flight even further and changed gates again. when I went to the customer service in terminal N, the manager turned me away without apologizing & refused to assist me but mandated I leave her alone as her shift is nearly finished and insisted I totake another 2 shuttles to terminal C so I can just talk to another service rep while dragging my family of 4/ kids in tow.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Okay considering we had weather delays which the Pilot notified us of immediately!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

Flight from Fort Wayne to Atlanta was the smallest in terms of cabin space that I've ever seen. A carry on I've used for 20 years BARELY fit in overhead compartment. I'm 5'10" and felt very cramped. Not the best experience.

I am writing to express my dissatisfaction with the poor service and unprofessional staff we encountered when traveling with an infant. Our flight was delayed, and the gate staff failed to manage the boarding process appropriately. Due to incorrect, unavailable, or missing 'pink tag' stroller and car seat check-in procedures at the gate, we were forced to board last. Furthermore, the gate staff was rude and dismissive, causing significant distress to our infant. To make matters worse, one of our checked items—an infant sleeper/lounger—was returned to us broken. Given the unsafe handling of essential equipment and unprofessional treatment, I expect a prompt resolution regarding compensation for the damaged items.

We departed and landed early which was a nice surprise. The boarding process was slow.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

The cabin temperature was nice and cool. The wifi was not working.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Poor communication, flight was delayed for preventable reasons. I missed my connection.

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

Flights were on time actually early service was good and crew cheerful

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

The flight was officially delayed 3 times, and was actually later than that. Combined, it was a 3 hour delay, but there was no recognition (miles, voucher, etc). The crew seemed stressed. The captain sounded nervous in his announcements. The flight itself was smooth and uneventful.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Same plane as RDU to LGA — internet not working. Pilot issue of some sort at end of prior flight - I was on same plane for my connection. Late/delayed —

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

Message about flight cancelation was received late due to being in the air. No explanation, just canceled and booked on morning flight. We had to stay in the airport overnight because there was no transportation offered to get to the hotel that AA had available. Actual inflight was fine.

I didn't go from Reno to Phoenix I ended up going from Reno to Dallas to Tucson because my flight rebooked because my Amtrak was late I tried notifying you guys I also don't know what you ask me about my flight because you guys didn't book my flight

Delays experienced in boarding/take off due to incoming plane delayed. However, the boarding time/depart time in the app was significantly delayed in providing these updates. Usually not updated until an hour after we should have already boarded. Poorly managed.

Bag drop was very disorganized in Miami. All main cabin passengers were shunted to just a few lanes and they had an equal number of lanes for first class passengers but there was nobody on those lines. They did nothing to bring the main cab and passengers over to the open lines and they just had employees standing there and doing nothing

there are no options s for snack besides cookies would ve nice to have a salty option n

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Everything you need to know for your flight from Seattle to Knoxville

Information on your arrival and departure airports