Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

TYS - SEA

$135 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 6/10. 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
Fri 7/5
Fri 7/12

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 44,281,614 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
6:17 pm - 8:37 amTYS-SEA
17h 20m1 stop
10:08 pm - 4:50 pmSEA-TYS
15h 42m1 stop
$287Frontier
Find Deal
Wed, Sep 18 - Fri, Sep 27
10:41 pm - 8:39 amTYS-SEA
12h 58m1 stop
7:56 am - 9:39 pmSEA-TYS
10h 43m1 stop
$288Frontier
Find Deal
Mon, Jun 17 - Mon, Jun 24
11:09 am - 8:52 pmTYS-SEA
12h 43m1 stop
11:59 pm - 4:07 pmSEA-TYS
13h 08m1 stop
$337American Airlines
Find Deal
Thu, Sep 5 - Tue, Sep 10
1:45 pm - 12:35 amTYS-SEA
13h 50m2 stops
9:21 pm - 8:11 pmSEA-TYS
19h 50m2 stops
Wed, Jul 10 - Mon, Jul 22
11:40 am - 10:01 pmTYS-SEA
13h 21m1 stop
6:00 am - 9:07 pmSEA-TYS
12h 07m1 stop
$367American Airlines
Find Deal
Thu, Aug 22 - Fri, Aug 30
7:00 am - 10:22 pmTYS-SEA
18h 22m1 stop
5:00 pm - 10:13 amSEA-TYS
14h 13m1 stop
$457United Airlines
Find Deal
Wed, Sep 4 - Sat, Sep 7
5:55 pm - 9:48 amTYS-SEA
18h 53m1 stop
5:00 pm - 10:13 amSEA-TYS
14h 13m1 stop
$482United Airlines
Find Deal
Tue, Sep 3 - Sat, Sep 7
6:39 pm - 11:53 pmTYS-SEA
8h 14m1 stop
12:30 am - 11:05 pmSEA-TYS
19h 35m1 stop
$562Delta
Find Deal
Mon, Sep 2 - Mon, Sep 9
6:39 pm - 11:53 pmTYS-SEA
8h 14m1 stop
11:40 pm - 10:55 amSEA-TYS
8h 15m1 stop
$603Delta
Find Deal
Mon, Sep 2 - Fri, Sep 13
2:15 pm - 7:22 pmTYS-SEA
8h 07m1 stop
10:44 pm - 10:39 amSEA-TYS
8h 55m1 stop
$822Alaska Airlines
Find Deal
Sun, Sep 8 - Sun, Sep 8

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 Mondays 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 $760 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 $135. KAYAK users also found Knoxville to Seattle round-trip flights on Frontier from $287 and on American Airlines from $337.

Good to know

Low season

February

High season

June

Cheapest flight

$135
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 19% 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 $135 for a one-way ticket and $287 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 oneworld being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Knoxville to Seattle are Delta and Alaska Airlines. With an average price for the route of $733 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 $780 and an overall rating of 8.0.

  • 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 9219 reviews
7.3Food
8.2Boarding
8.6Crew
7.9Comfort
7.3Entertainment
Airline reviews

It was all good until they had a mishandling issue with a couple of our bags but overall it was fine and we got the bags eventually

6.0 GoodDimitri, Jun 2024MCI - SEA
Read more about Alaska Airlines reviews

It was all good until they had a mishandling issue with a couple of our bags but overall it was fine and we got the bags eventually

The flight itself went well, except it left 1.5 hours late, and about 10 of us missed our Alaska Airlines connection by minutes; they wouldn't hold the plane, even though our arrival delay was caused by Alaska. No gluten-free options among the snacks; you had to order meals separately, but there was no consideration for food sensitivities. NO TELEVISION on a flight from Washington, DC to Seattle or from Seattle to Anchorage. I didn't know that ANY airlines offering cross-country flights didn't have screens for entertainment. This alone is a "never again" for me.

I have to eat gluten-free due to celiac disease, but so far no Alaska Air flight has offered a gluten-free option for the snack given out with free drinks. It seems like that wouldn't be too hard to do.

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.

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.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I had a great flight. Everything went smoothly and the flight arrived early.

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.

Terrible. I didn’t fly and I had an important meeting the next day.

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

Wretched scheduling - they got themselves into a critical crew situation and didn’t try to address it until 15 minutes before they had to cancel my flight

They cancelled two flight and got us onto another airline, which was also delayed.

Nothing, terrible travel experience due to weather and maintenance delays and was left stranded in Austin.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

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.

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

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.

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.
6/10Mon
1 stopFrontier
12h 58mTYS-SEA
$135
6/14Fri
1 stop
12h 42mTYS-SEA
$147
7/2Tue
2 stops
22h 11mTYS-SEA
$168
7/16Tue
1 stopAmerican Airlines
10h 08mTYS-SEA
$274
7/16Tue
2 stopsUnited Airlines
10h 32mTYS-SEA
$329
7/14Sun
2 stopsDelta
11h 56mTYS-SEA
$363
7/18Thu
1 stopDelta
9h 18mTYS-SEA
$364
7/14Sun
1 stopAlaska Airlines
8h 20mTYS-SEA
$414
7/21Sun
2 stopsAmerican Airlines
10h 26mTYS-SEA
$493
6/14Fri
3 stopsUnited Airlines
22h 03mTYS-SEA
$651

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.
6/10Mon
multi-stopFrontier
12h 58mTYS-SEA
6/13Thu
multi-stopFrontier
22h 41mSEA-TYS
$294
6/8Sat
multi-stopFrontier
18h 19mTYS-SEA
6/13Thu
multi-stopFrontier
22h 41mSEA-TYS
$298
6/10Mon
multi-stopFrontier
12h 58mTYS-SEA
6/13Thu
multi-stopFrontier
22h 41mSEA-TYS
$301
6/10Mon
multi-stop
29h 59mTYS-SEA
6/13Thu
multi-stop
8h 14mSEA-TYS
$487
6/10Mon
multi-stop
14h 48mTYS-SEA
6/13Thu
multi-stop
18h 49mSEA-TYS
$516
6/8Sat
multi-stopUnited Airlines
18h 20mTYS-SEA
6/10Mon
multi-stopUnited Airlines
16h 22mSEA-TYS
$730
6/8Sat
multi-stopAmerican Airlines
14h 26mTYS-SEA
6/13Thu
multi-stopAmerican Airlines
12h 55mSEA-TYS
$762
6/8Sat
multi-stopUnited Airlines
17h 47mTYS-SEA
6/10Mon
multi-stopUnited Airlines
16h 22mSEA-TYS
$780
6/8Sat
multi-stopAmerican Airlines
14h 26mTYS-SEA
6/13Thu
multi-stopAmerican Airlines
12h 55mSEA-TYS
$787
6/9Sun
multi-stopDelta
8h 20mTYS-SEA
6/12Wed
multi-stopDelta
6h 47mSEA-TYS
$1,218

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: