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Cheap Flights from Seattle / Tacoma International to Knoxville

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      Travellers and cabin class, 1 Adult, Economy

      Compare Seattle / Tacoma International 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 / Tacoma International to Knoxville

      Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Knoxville Airport? If you want to travel next month, return fares start from R 5,361. Find the lowest prices on one-way and return tickets right here.
      Knoxville.R 2,505 per passenger.Departing Sat, 24 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 24 Oct, arriving in Knoxville.Price includes taxes and charges.From R 2,505, select.
      Knoxville.R 2,681 per passenger.Departing Wed, 2 Dec.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Wed, 2 Dec, arriving in Knoxville.Price includes taxes and charges.From R 2,681, select.
      Knoxville.R 2,682 per passenger.Departing Tue, 3 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Tue, 3 Nov, arriving in Knoxville.Price includes taxes and charges.From R 2,682, select.
      Knoxville.R 2,682 per passenger.Departing Wed, 3 Mar.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 3 Mar, arriving in Knoxville.Price includes taxes and charges.From R 2,682, select.
      Knoxville.R 2,684 per passenger.Departing Mon, 28 Sep.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 28 Sep, arriving in Knoxville.Price includes taxes and charges.From R 2,684, select.
      Knoxville.R 3,272 per passenger.Departing Tue, 11 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Tue, 11 May, arriving in Knoxville.Price includes taxes and charges.From R 3,272, select.
      Knoxville.R 3,719 per passenger.Departing Mon, 7 Jun.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Seattle / Tacoma International on Mon, 7 Jun, arriving in Knoxville.Price includes taxes and charges.From R 3,719, select.
      Knoxville.R 3,721 per passenger.Departing Fri, 1 Jan.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Fri, 1 Jan, arriving in Knoxville.Price includes taxes and charges.From R 3,721, select.
      Knoxville.R 4,630 per passenger.Departing Wed, 26 Aug.One-way flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Wed, 26 Aug, arriving in Knoxville.Price includes taxes and charges.From R 4,630, select.

      Find the cheapest month to fly from Seattle / Tacoma International to Knoxville

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Knoxville flights are currently cheapest in October.
      Aug
      from R 4,630
      Sep
      from R 2,684
      Oct
      from R 2,505
      Nov
      from R 2,682
      Dec
      from R 2,681
      Jan
      from R 3,721
      Feb
      Find prices
      Mar
      from R 2,682
      Apr
      Find prices
      May
      from R 3,272
      Jun
      from R 3,719
      Jul
      Find prices

      Seattle / Tacoma International to Knoxville: Alternative routes

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

      Knoxville

      18km from central Knoxville
      ClosestCheapest
      from R 2,505
      Search flights

      Seattle to Knoxville: Flight information

      The things to know before you go.
      Cheapest flight foundR 2,505
      Cheapest month to flyOctober

      Finding cheap flights from Seattle / Tacoma International to Knoxville: Frequently asked questions

      The best price we found for a return flight from Seattle / Tacoma International to Knoxville is R 5,276. 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 / Tacoma International to Knoxville. But we found flights with one or more stops from R 5,276.
      As of August 2026, there are no flights flying from Seattle / Tacoma International to Knoxville.
      The cheapest month to fly from Seattle / Tacoma International to Knoxville is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Knoxville Airport on Tuesday, 6 October 2026.
      No airlines currently offer direct flights between Seattle / Tacoma International Airport 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.

      Currently, Delta offers the cheapest flight tickets to Knoxville.

      Travelling from Seattle / Tacoma International Airport (SEA) to Knoxville Airport (TYS): what you need to know

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are tried-and-true travel tips. Show up at the airport on time to board your SEA to TYS flight.

      • During popular months like July, it's best to get to the airport well in advance. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're travelling during peak periods in general.

      • Think about adding a stopover when booking your ticket from Seattle / Tacoma International Airport to Knoxville Airport. Just deselect 'Direct flights only' to break up your journey, or perhaps see a new city along the way. Here are some options between SEA and TYS:

        • Atlanta Hartsfield-Jackson Airport

        • Denver International Airport

        • Chicago Midway Airport

      How to find the cheapest flights from Seattle / Tacoma International Airport (SEA) to Knoxville Airport (TYS)

      • Currently, R 2,505 is the lowest price we've seen for a one-way Seattle / Tacoma International Airport to Knoxville Airport flight. The best price for a return ticket is R 5,276. Bear in mind that fares may change due to availability when booking.

      • Don't wait until the last moment. You're more likely to find cheap tickets from SEA to TYS if you book early. Airlines often have some excellent early bird deals.

      • If you're willing to be flexible with your travel plans, use the 'Whole month' search function. It'll give you the cheapest price across every month when searching for your flight from Seattle / Tacoma International Airport to Knoxville Airport.

      • You won't have to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll let you know the moment a special offer becomes available on cheap flights from SEA to TYS.

      • Select your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Seattle / Tacoma International Airport to Knoxville Airport.

      Handy information about Seattle / Tacoma International Airport (SEA)

      • Seattle / Tacoma International Airport maintains a strong on-time performance, so you're unlikely to face delays. Departures from SEA make it to their destination as scheduled 80% of the time.

      • To reach Seattle / Tacoma International Airport from central Seattle, it takes around 25 minutes if you're travelling by car. This depends on traffic though. It's approximately 23 kilometres from the airport to the city centre.

      • The journey on public transport takes about 35 minutes.

      • Looking for a convenient hotel near SEA? If you're catching an early flight from Seattle / Tacoma International Airport to Knoxville Airport, these stays will have you sleeping moments from your check-in counter:

      Arriving at Knoxville Airport (TYS)

      • Book a hotel close to TYS if you're on a late Seattle / Tacoma International Airport to Knoxville Airport flight. Check in to one of these accommodation options and avoid the hassle of a long transfer:

      • Grab a Knoxville Airport rental car and discover Knoxville and beyond with your own wheels. Budget, Alamo and Avis are popular outlets you can book with here.

      • To get the lowest price, book your vehicle from Knoxville Airport about three weeks in advance.

      When to fly to Knoxville Airport (TYS)

      • It's time to work out your travel dates for your flight from Seattle / Tacoma International Airport to Knoxville Airport. October is the most popular month to head to Knoxville. If you prefer a more laid-back vibe, go in March.

      • The warmest month in Knoxville is July, with temperatures ranging between 17ºC (63ºF) and 32ºC (90ºF). Book your flights from Seattle / Tacoma International Airport to Knoxville Airport in this month if you like this kind of weather.

      • January sees average temperatures of between -6ºC (21ºF) and 11ºC (52ºF). Search for cheap tickets from SEA to TYS around that time if you like travelling in cooler conditions.

      Explore more of the United States

      • You've seen Knoxville, now it's time to discover other corners of the United States. Travel around 451 kilometres north to Columbus to check off its popular sights. From Franklin Park Conservatory and Botanical Gardens to Whetstone Park / Park of Roses and Ohio Theatre, there's plenty to keep you on the go.

      • Indianapolis is another standout destination in the United States and is around 467 kilometres north-west of Knoxville. No trip is complete without dropping by Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.

      Plan the rest of your trip from Seattle to Knoxville

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.