Cheap Flights from Seattle to Knoxville

Compare Seattle to Knoxville flight deals

Find the cheapest month or even day of the year to fly to Knoxville

Book the best Knoxville fare with no extra fees

Flight deals from Seattle to Knoxville

Looking for a cheap last-minute deal or the best return flight from Seattle to Knoxville? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Knoxville

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Knoxville flights are currently cheapest in April.

Seattle to Knoxville: Alternative routes

Compare routes from Seattle to Knoxville below. You may find an airport to fly into that's cheaper, faster, or easier than Knoxville.

Seattle to Knoxville: Flight information

The things to know before you go.
Cheapest flight foundR 2,352
Cheapest month to flyApril

Finding cheap flights from Seattle to Knoxville: Frequently asked questions

The best price we found for a return flight from Seattle to Knoxville is R 3,890. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Knoxville. But we found flights with one stop from R 3,890.
As of February 2026, there are no flights flying from Seattle to Knoxville.
The cheapest month to fly from Seattle to Knoxville is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Knoxville Airport on Thursday, 9 April 2026.
No airlines currently offer direct flights between Seattle and Knoxville Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Knoxville but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Knoxville is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Knoxville is Frontier Airlines .

Travelling from Seattle to McGhee Tyson Airport (TYS): What you need to know

  • Seattle's main airport is Seattle-Tacoma International Airport (SEA). Check out your options for leaving from this base when booking your flights from Seattle to McGhee Tyson Airport (TYS).

  • The timezone in Knoxville is UTC-4, which is three hours ahead of Seattle. McGhee Tyson Airport is located in Knoxville.

  • Your flight from Seattle to TYS won't wait if you're late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • In peak travel periods, allow for extended wait times and get there earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Travelling from central Seattle to SEA takes around 55 minutes on public transport. If you ride-share, drive or grab a cab, you'll cover the 23 kilometres in 20 minutes or so, depending on traffic conditions.

  • Searching for a comfortable hotel near Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to McGhee Tyson Airport, these stays will put you just around the corner from the terminal:

  • 81.27% of flights departing from Seattle-Tacoma International Airport arrive at their destination on schedule. With its strong on-time performance, you're unlikely to face delays when flying out of SEA.

Lake Union Sea Plane Base Airport (LKE)

  • On public transport, you can travel from central Seattle to LKE in around 25 minutes. The airport is roughly 3 kilometres away, and getting there by car takes approximately 10 minutes.

  • Want to treat yourself to an extra night away before catching your Seattle to TYS flight? Relax in a hotel near Lake Union Sea Plane Base Airport before your adventure officially starts. These stays are calling your name:

About McGhee Tyson Airport (TYS)

  • Consider staying in a hotel close to TYS if you're catching a late flight from Seattle to McGhee Tyson Airport. Settle into one of these options and say goodnight sooner:

  • Get your adventure underway by picking up a McGhee Tyson Airport rental car. Grab your wheels from Budget, Alamo or Avis and explore beyond Knoxville's main sights.

  • To lock in the lowest price, reserve your ride around three weeks ahead of your Seattle to McGhee Tyson Airport flight.

  • TYS is located at 2055 Alcoa Highway.

How to find the cheapest flights from Seattle to McGhee Tyson Airport (TYS)

  • R 2,352 is currently the best price for a one-way ticket from Seattle to McGhee Tyson Airport. Return flights start from R 3,890. These fares may change depending on availability.

  • Booking early is often the key to finding a cheap flight from Seattle to TYS. Flight prices rise as demand increases, so the closer your departure date, the more you'll likely pay.

  • The 'Whole month' tool will show you the cheapest Seattle to McGhee Tyson Airport tickets across each month. It's a great way to snap up a bargain if your dates aren't set in stone.

  • Snapping up a cheap plane ticket from Seattle to TYS is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when there's a price drop.

  • Tailor your trip using filters. Choose your departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Seattle to McGhee Tyson Airport.

The best time to fly from Seattle to McGhee Tyson Airport (TYS)

  • February is the quietest month for flights from Seattle to McGhee Tyson Airport (TYS), while July is the busiest. Find the ideal time to visit Knoxville based on whether you want a lively atmosphere or a more laid-back vibe.

  • The warmest month in Knoxville is July, with temperatures ranging between 17ºC (63ºF) and 32ºC (90ºF). Book your Seattle to TYS plane ticket then if this is the type of weather you enjoy.

  • Look for cheap tickets from Seattle to McGhee Tyson Airport in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 11ºC (52ºF).

More about Knoxville

Explore more of the United States

  • Charlotte is just one of the many cities in the United States waiting to be explored after you've seen Knoxville. Around 290 kilometres away to the east, popular attractions include Bechtler Museum of Modern Art, Discovery Place and NASCAR Hall of Fame.

  • Around 257 kilometres west of Knoxville, Nashville is another favourite stop in the United States. Experience this destination's highlights firsthand at Grand Ole Opry, Country Music Hall of Fame and Museum and The Johnny Cash Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.