£214 Cheap Flights from Knoxville (TYS) to Seattle (SEA)

View £214 flight on Wed, 27 May 2026Opens in a new window

Flight 1

Popular airlines from Alcoa - Knoxville Airport (TYS) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Knoxville (TYS) to Seattle (SEA)

Prices were available within the past 7 days and start at £214 for one-way flights and £458 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£458 Return, found 6 days ago
£458
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £458 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£481 Return, found 6 days ago
£481
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £481 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Sat, 4 Jul
TYS
Knoxville
SEA
Seattle
£532 Return, found 6 days ago
£532
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Sat, 4 Jul, priced at £532 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£554 Return, found 6 days ago
£554
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £554 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£557 Return, found 6 days ago
£557
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £557 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£577 Return, found 6 days ago
£577
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £577 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£580 Return, found 6 days ago
£580
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £580 found 6 days ago
Alaska Airlines
Sun, 28 Jun - Sat, 4 Jul
TYS
Knoxville
SEA
Seattle
£581 Return, found 6 days ago
£581
Return
found 6 days ago
Select Alaska Airlines flight, departing Sun, 28 Jun from Knoxville to Seattle, returning Sat, 4 Jul, priced at £581 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Sat, 4 Jul
TYS
Knoxville
SEA
Seattle
£628 Return, found 6 days ago
£628
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Sat, 4 Jul, priced at £628 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Sat, 4 Jul
TYS
Knoxville
SEA
Seattle
£631 Return, found 6 days ago
£631
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Sat, 4 Jul, priced at £631 found 6 days ago
Alaska Airlines
Sat, 27 Jun - Fri, 3 Jul
TYS
Knoxville
SEA
Seattle
£673 Return, found 6 days ago
£673
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 27 Jun from Knoxville to Seattle, returning Fri, 3 Jul, priced at £673 found 6 days ago

Frequently asked questions

What is the cheapest month to fly from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is typically the cheapest month to fly from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average return fares of approximately £343. This is about 17% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. August and September are also good months to find deals on this route.
How do I find cheap flights from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) for good value is typically January or August. While we don't have specific data on popularity for these months, you can generally find return flights for around £343. January often sees lower demand after the holiday season, and August can sometimes offer deals as the peak summer travel winds down. This information is based on booking data from the past year.
How many flights per day from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 62 connecting flights per day from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Nashville Intl. (BNA).
What is the earliest flight from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and is a seasonal service active in March. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Saturday, with around 42 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, so you'll have a good selection of flights no matter which day you choose.
What are the most popular departure times for flights from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. Approximately 30% of passengers prefer this time window. Many major carriers, including American Airlines, United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive in Seattle with plenty of time to settle in.
How long does it take to fly from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying from TYS to SEA with a connection usually takes about 7 hours 50 minutes, traveling roughly 2,110 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for TYS to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from McGhee Tyson (TYS)?
If you're planning to travel to Seattle from McGhee Tyson (TYS), you can fly directly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like O'Hare Intl. (ORD), Nashville Intl. (BNA), Hartsfield-Jackson Atlanta Intl. (ATL) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Knoxville, TN (TYS-McGhee Tyson) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
McGhee Tyson
Destination airport
Seattle - Tacoma Intl.
Return price
£458
Distance
3375 km
Average flight time
7 hours 52 mins

Book with confidence

Compare flights from Knoxville to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Knoxville to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from McGhee Tyson to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from McGhee Tyson (TYS) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Knoxville to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from McGhee Tyson to Seattle - Tacoma Intl. start at just £458 and range up to £673.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Knoxville and Seattle
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Knoxville to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from McGhee Tyson to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Knoxville to Seattle easily and book with confidence

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*Available to Expedia members.