Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

TYS - SEA

$150 Find cheap flights from Knoxville to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Seattle departing on 6/19. 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
0 bags
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Seattle, 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 Knoxville to Seattle, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Knoxville to Seattle (TYS-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Seattle 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 and deals for you by selecting your travel dates.
Choose your dates
5:40 pm - 8:37 amTYS-SEA
17h 57m1 stop
10:08 pm - 4:50 pmSEA-TYS
15h 42m1 stop
$270Frontier
Find Deal
Sat, Aug 31 - Fri, Sep 13
7:47 pm - 10:26 amTYS-SEA
17h 39m1 stop
8:12 pm - 9:39 pmSEA-TYS
22h 27m1 stop
$301Frontier
Find Deal
Wed, Jun 12 - Sun, Jun 16
10:41 pm - 8:39 amTYS-SEA
12h 58m1 stop
8:04 am - 9:30 pmSEA-TYS
10h 26m1 stop
$302Frontier
Find Deal
Mon, Jun 10 - Fri, Jun 14
8:30 am - 12:35 amTYS-SEA
19h 05m2 stops
6:25 pm - 11:34 amSEA-TYS
14h 09m1 stop
Tue, Jul 30 - Thu, Aug 8
5:40 pm - 8:37 amTYS-SEA
17h 57m1 stop
9:37 am - 5:17 pmSEA-TYS
28h 40m1 stop
$335Frontier
Find Deal
Sat, Sep 21 - Tue, Oct 1
7:59 am - 8:52 pmTYS-SEA
15h 53m1 stop
6:00 am - 10:08 pmSEA-TYS
13h 08m1 stop
$337American Airlines
Find Deal
Tue, Sep 17 - Sat, Sep 21
11:09 am - 11:09 pmTYS-SEA
15h 00m1 stop
11:59 pm - 4:07 pmSEA-TYS
13h 08m1 stop
$362American Airlines
Find Deal
Tue, Sep 24 - Fri, Sep 27
6:30 am - 8:32 amTYS-SEA
29h 02m3 stops
5:55 pm - 11:34 amSEA-TYS
14h 39m1 stop
Thu, Jun 27 - Thu, Jul 4
9:50 am - 9:09 pmTYS-SEA
14h 19m2 stops
6:45 pm - 2:48 pmSEA-TYS
17h 03m1 stop
$486United Airlines
Find Deal
Wed, Aug 14 - Thu, Aug 22
7:00 am - 9:52 amTYS-SEA
29h 52m1 stop
7:00 am - 10:41 pmSEA-TYS
12h 41m1 stop
$487United Airlines
Find Deal
Thu, Sep 26 - Wed, Oct 2

Flights from Knoxville to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Knoxville to Seattle 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 Knoxville to Seattle?

The average price of all flights from Knoxville to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Knoxville to Seattle, you should consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to Knoxville, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Knoxville to Seattle, 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 Knoxville to Seattle is October, where tickets cost $568 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $762 and $727 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Knoxville to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Knoxville to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 days before departure.

Which airlines provide the cheapest flights from Knoxville to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $179. KAYAK users also found Knoxville to Seattle round-trip flights on Frontier from $270 and on American Airlines from $337.

Good to know

Low season

February

High season

June

Cheapest flight

$150
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Knoxville to Seattle

When to book flights from Knoxville to Seattle

Are your dates flexible? Find out the best times to travel from Knoxville to Seattle 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 Knoxville to Seattle

  • How convenient are Knoxville to Seattle flights for Persons with Reduced Mobility (PRMs)?

    Although most airlines consider PRMs, you will conveniently fly from Knoxville to Seattle via United Airlines. Priority boarding for PRMs and their families, free wheelchair assistance, and a team of specially trained staff members to provide specialized services to PRMs are just a few of the airline's special access services.

  • What pet-friendly airline should I consider for my flight from Knoxville to Seattle?

    Consider booking your flight ticket with Frontier from Knoxville to Seattle with your furry friend. Frontier's pet-friendly allows smaller pets that can fit under your seat to travel in the cabin. Larger domestic pets may have to be transported as cargo in pressure- and temperature-controlled carriers.

  • Which eco-friendly airline should I consider for my Knoxville to Seattle flight?

    Consider using United Airlines for your flights from Knoxville to Seattle if you want to travel sustainably. The airline has invested in sustainable biofuels, fuel-efficient aircraft, recycling initiatives, and energy-saving technologies to reduce waste. To lessen its environmental impact, United Airlines collaborates with environmental organizations to advocate for carbon offsetting initiatives.

  • How can I connect to the city center after deplaning from m Knoxville to Seattle flight at Seattle/Tacoma Intl (SEA)?

    For most travelers, Seattle/Tacoma Intl (SEA) is the destination airport, but not the final destination. To connect from Seattle/Tacoma Intl (SEA) to the city center, there are various transport options. After deplaning from your Knoxville to Seattle flight, you will either board Link Light Rail, a taxi, ride-share services like Lyft or a public means of transport, such as Metro Transit Bus Route 40 and 124. Buses and trains offer more budget-friendly and reliable options than taxis.

  • What is the cheapest flight from Knoxville to Seattle?

    In the last 3 days, the lowest price for a flight from Knoxville to Seattle was $150 for a one-way ticket and $270 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

  • Which airline alliances offer flights from Knoxville to Seattle?

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

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

    The two airlines most popular with KAYAK users for flights from Knoxville to Seattle are Delta and United Airlines. With an average price for the route of $733 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $697 and an overall rating of 7.4.

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

    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 Knoxville to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Knoxville 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 Knoxville to Seattle?

    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 Seattle with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and SEA 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 Knoxville to Seattle?

    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 Seattle from Knoxville 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 Knoxville to Seattle

  • Most airlines connecting Knoxville (TYS) to Seattle (SEA) offer flights with at least a single layover. Some of the common layovers to expect on your flight from Knoxville to Seattle are Chicago O'Hare Intl (ORD), Washington, D.C. Dulles Intl (IAD), and Dallas/Fort Worth (DFW).
  • Besides serving as the major destination airport for travelers connecting to Seattle, Seattle/Tacoma Intl (SEA) is also the destination airport for travelers who may be connecting to its nearby cities. Some of these cities are; Victoria, Surrey, and Burnaby. You can easily travel to these cities by renting a car or taxi.
  • To rent a car for movement flexibility after deplaning from your flight from Knoxville to Seattle, you will visit any onsite car rentals conveniently accessible at the Sea-Tac Airport Rental Vehicle Facility within the airport premises. A courtesy bus connects each terminal to the car rental facility.
  • Alaska Airlines is among the family-friendly airlines to consider for your flight from Knoxville to Seattle with children. Besides priority boarding and kid-friendly entertainment, the airline allows families with children under two to travel free on their parent's laps.
  • Among the transport options for travelers connecting from Downtown Knoxville to McGhee Tyson (TYS) are taxis and Knoxville Area Transit (KAT) buses. Among these options, taxis offer a quicker and more flexible option, but they are slightly more expensive compared to buses.
See more tips

Top 5 airlines serving from Knoxville to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Seattle. 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 Knoxville to Seattle? 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 9192 reviews
7.9Comfort
7.3Entertainment
7.3Food
8.2Boarding
8.6Crew
Airline reviews

I didn’t know that food needed to be ordered ahead. Please include this in the reservation information. Overall, very good experience.

8.0 ExcellentNorma, May 2024SNA - SEA
Read more about Alaska Airlines reviews

I didn’t know that food needed to be ordered ahead. Please include this in the reservation information. Overall, very good experience.

Full flight where I had another passenger sitting in middle seat who said that he had lost 250 lbs from 500. The stewardess on exiting the flight advise me that I was going to receive a refund. I thought she was talking about another passenger. The stewardess saw that to make him comfortable I had lifted the armrest and flew for 5 hours to Seattle from Reagan DCA with a portion of his body on my seat. I survived. I flight to remember!!!!

the flight was delayed almost 3 hours and not one time was we told that it was delayed or why. I had asked one of the crew members why it was delayed, 20 minutes after the flight was supposed to take off, and was told that they had no idea what was going on and that they had not been told anything. this is FRIGHTENING!!!! No excuse!!

Flights were on time. Check in was fine. Crew members were pleasant.

I would have liked it to have been easier to order food for the flight. My son was not happy with the snack pack I bought him and it was a very long flight for a little boy to go without food.

Ground staff at LAX was very helpful. The Alaska lounge food and service is better than most airport lounges. I think the Staff are well trained polite and actually seem happy to work there. Great service Thanks 🙏 Jjk

The flight was very very delayed and arrived much later than planned. There was no communication about why or when our arrival would be. I would expect better and open communication about the flight but there was none. Also just pretzels? How disappointing.

I got to my destination but no comforts no snacks nothing. Like herding cows!!

My only comment was the confusion at Houston. Suppose to leave at 6 am and didn't leave til 11 am. Then moving from gate 10 to 30 and couple of hours later back to gate 10. Otherwise everyone everything was great.

The food options could be better. Possibly some sandwiches to be added to the menu.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Was lucky to have a employee at the AA checkin counter that had compassion and understood they ordeal that we went through with our original flight being diverted, needing to stay in the aircraft and then flying to the original destination; adding hours to the trip and forcing us to miss our connection and our rebooked connection. She was able to get up on standby on the highest priority on the next flight to the closest airport we need to be at and it all worked out despite being many hours late.

Liked - nothing. Disliked - delayed 35+ min sitting on the plane. Caused me to miss my connection in Charlotte. American Airlines is the worst US Air Carrier company with atrocious customer service.

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Smaller, regional aircraft limits amount of overhead luggage space. At least there were jetways at both BNA and PHL. First class food service was minimal with the usual assortment of packaged snacks (nothing creative) and no handiwipes. American tries to turn around aircraft too quickly without enough time to clean the planes. WIFI service did not include TV programming.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Book cheap flights from Knoxville to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Knoxville to Seattle found on KAYAK in the last 72 hours.
6/19Wed
2 stops
21h 47mTYS-SEA
$150
6/21Fri
1 stopFrontier
14h 54mTYS-SEA
$179
7/10Wed
3 stops
18h 35mTYS-SEA
$192
6/19Wed
1 stopFrontier
17h 39mTYS-SEA
$199
6/22Sat
1 stopFrontier
18h 19mTYS-SEA
$219
10/9Wed
1 stopAmerican Airlines
10h 47mTYS-SEA
$263
7/21Sun
1 stopAmerican Airlines
7h 55mTYS-SEA
$363
6/27Thu
1 stopUnited Airlines
16h 45mTYS-SEA
$373
6/20Thu
1 stopUnited Airlines
11h 48mTYS-SEA
$384
6/20Thu
2 stopsDelta
11h 15mTYS-SEA
$428

Search by stops

Search by airline

Search by price

Last minute flights from Knoxville to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Knoxville to Seattle that are departing in the next 10 days.
5/31Fri
multi-stop
29h 45mTYS-SEA
6/13Thu
multi-stop
13h 55mSEA-TYS
$518
5/31Fri
multi-stop
29h 45mTYS-SEA
6/13Thu
multi-stop
22h 45mSEA-TYS
$547
5/31Fri
multi-stop
13h 28mTYS-SEA
6/13Thu
multi-stop
22h 45mSEA-TYS
$574
5/31Fri
multi-stop
29h 45mTYS-SEA
6/13Thu
multi-stop
33h 20mSEA-TYS
$595
6/2Sun
multi-stop
28h 15mTYS-SEA
6/14Fri
multi-stop
22h 54mSEA-TYS
$655
6/2Sun
multi-stopUnited Airlines
28h 00mTYS-SEA
6/14Fri
multi-stopUnited Airlines
14h 05mSEA-TYS
$755
6/2Sun
multi-stopUnited Airlines
28h 00mTYS-SEA
6/13Thu
multi-stopUnited Airlines
6h 52mSEA-TYS
$857
5/31Fri
multi-stopAmerican Airlines
14h 30mTYS-SEA
6/12Wed
multi-stopAmerican Airlines
16h 51mSEA-TYS
$932
5/31Fri
multi-stopAmerican Airlines
7h 51mTYS-SEA
6/12Wed
multi-stopAmerican Airlines
9h 28mSEA-TYS
$958
6/2Sun
multi-stopDelta
8h 01mTYS-SEA
6/10Mon
multi-stopDelta
9h 25mSEA-TYS
$2,093

Search by stops

Search by airline

Search by price

Knoxville - Seattle Flights

Departure:

Knoxville (TYS)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Knoxville

Cabin classes: