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

Compare Knoxville to Seattle flight deals

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Flight deals from Knoxville to Seattle

Looking for a cheap last-minute deal or the best return flight from Knoxville Airport to Seattle? If you want to travel next month, return fares start from $517. Find the lowest prices on one-way and return tickets right here.
Seattle.$517 per passenger.Departing Fri, 10 Jul, returning Tue, 21 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Knoxville on Fri, 10 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 21 Jul, arriving in Knoxville.Price includes taxes and charges.From $517, select.
Seattle.$523 per passenger.Departing Wed, 26 Aug, returning Tue, 1 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Knoxville on Wed, 26 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Tue, 1 Sep, arriving in Knoxville.Price includes taxes and charges.From $523, select.
Seattle.$539 per passenger.Departing Sat, 3 Oct, returning Tue, 13 Oct.Return flight with United.Outbound indirect flight with United, departs from Knoxville on Sat, 3 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 13 Oct, arriving in Knoxville.Price includes taxes and charges.From $539, select.
Seattle.$545 per passenger.Departing Fri, 19 Jun, returning Tue, 23 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Knoxville on Fri, 19 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 23 Jun, arriving in Knoxville.Price includes taxes and charges.From $545, select.
Seattle.$546 per passenger.Departing Fri, 14 Aug, returning Sun, 16 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Knoxville on Fri, 14 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sun, 16 Aug, arriving in Knoxville.Price includes taxes and charges.From $546, select.
Seattle.$587 per passenger.Departing Tue, 7 Jul, returning Wed, 12 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Knoxville on Tue, 7 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Southwest Airlines, departs from Seattle / Tacoma International on Wed, 12 Aug, arriving in Knoxville.Price includes taxes and charges.From $587, select.
Seattle.$595 per passenger.Departing Fri, 25 Sep, returning Sat, 3 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Knoxville on Fri, 25 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 3 Oct, arriving in Knoxville.Price includes taxes and charges.From $595, select.
Seattle.$782 per passenger.Departing Tue, 30 Jun, returning Mon, 6 Jul.Return flight with United.Outbound indirect flight with United, departs from Knoxville on Tue, 30 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 6 Jul, arriving in Knoxville.Price includes taxes and charges.From $782, select.
Seattle.$805 per passenger.Departing Sun, 11 Apr, returning Sat, 17 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Knoxville on Sun, 11 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 17 Apr, arriving in Knoxville.Price includes taxes and charges.From $805, select.
Seattle.$1,068 per passenger.Departing Wed, 30 Dec, returning Tue, 5 Jan.Return flight with United.Outbound indirect flight with United, departs from Knoxville on Wed, 30 Dec, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 5 Jan, arriving in Knoxville.Price includes taxes and charges.From $1,068, select.

Find the cheapest month to fly from Knoxville to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Knoxville to Seattle flights are currently cheapest in July.
Jun
from $545
Jul
from $517
Aug
from $546
Sep
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Oct
from $539
Nov
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Dec
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Jan
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Feb
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Mar
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Apr
from $805
May
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Alternative Knoxville to Seattle routes

Looking for the cheapest, fastest or easiest route from Knoxville to Seattle? You could fly into the following airports instead.

Seattle Lake Union SPB

2km from central Seattle
Closest
Search flights

Seattle Boeing Fld

11km from central Seattle
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from $517
Search flights

Paine Field

33km from central Seattle
from $622
Search flights

Knoxville to Seattle: Flight information

The things to know before you go.
Cheapest flight found$517
Cheapest month to flyJuly

Finding cheap flights from Knoxville to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Knoxville to Seattle is $517. 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 Knoxville to Seattle. But we found flights with one or more stops from $517.
As of June 2026, there are no flights flying from Knoxville to Seattle.
The cheapest month to fly from Knoxville to Seattle is usually July.
If you're flying from Knoxville Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from $517.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Knoxville Airport to Seattle on Friday, 10 July 2026.
No airlines currently offer direct flights between Knoxville Airport and Seattle. 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 Seattle 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 14°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Frontier Airlines offers the cheapest flight tickets to Seattle.

Flying from Knoxville McGhee Tyson Airport (TYS) to Seattle: what you need to know

  • Knoxville McGhee Tyson Airport is located in Knoxville. Following the UTC-8 timezone, Seattle is three hours behind Knoxville.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This leaves you with plenty of time to catch your TYS to Seattle flight.

  • You can expect longer lines during popular months like June. Arriving up to four hours in advance for international flights and two hours for domestic departures is a wise move.

  • Travelling from central Knoxville to TYS takes about 50 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 18 kilometres in 25 minutes or so, depending on traffic conditions.

  • Want a leisurely start to your journey? Stay near TYS. Whether you're catching an early flight from Knoxville McGhee Tyson Airport to Seattle or want to avoid feeling rushed, these hotels have you covered:

  • Of the departures from Knoxville McGhee Tyson Airport, 76% land on time at their destination.

  • TYS's address is 2055 Alcoa Highway.

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

  • $232 is currently the lowest price for a one-way Knoxville McGhee Tyson Airport to Seattle flight. Return plane tickets start from $517. These fares may change based on availability and demand.

  • Don't leave everything to the last moment. You're more likely to find cheap flights from TYS to Seattle if you book in advance. Airlines often offer some fantastic early bird deals.

  • Scoring cheap tickets from Knoxville McGhee Tyson Airport to Seattle is easier if you're flexible with your travel dates. Use the 'Whole month' search function to access the best prices throughout the month and walk away with a sweet deal.

  • You don't need to keep checking in to see if fares have dropped when you create a Price Alert. We'll update you the moment there's an extra saving on cheap flights from TYS to Seattle.

  • Find an affordable flight from Knoxville McGhee Tyson Airport to Seattle with the help of our filters. Select your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to the centre of Seattle takes around 25 minutes to reach by car. The centre is roughly 23 kilometres away.

  • If you're taking public transport, expect a journey time of around 35 minutes.

  • Think about booking a hotel close to SEA if you have a late flight from Knoxville McGhee Tyson Airport to Seattle. Settle into one of these accommodation options and skip the long transfer:

  • For the lowest price, reserve your ride from Seattle-Tacoma International Airport around one week in advance of your flight from TYS to Seattle.

Seattle Paine Field International Airport (PAE)

  • After your flight from Knoxville McGhee Tyson Airport to Seattle has arrived, you can reach the city centre in about 40 minutes by car. Central Seattle is roughly 40 kilometres from Seattle Paine Field International Airport (PAE).

  • Public transport will get you there in about 1 hour 30 minutes.

  • Place the 'Do not disturb' sign on your door and rest at a hotel close to PAE. Here are a few options where you can check in after your TYS to Seattle flight:

  • Generally speaking, the sooner you book, the better the deals and selection of vehicles. Reserve your ride from PAE once your travel dates are set.

King County International Airport (BFI)

  • King County International Airport (BFI) is about 11 kilometres from the centre of Seattle. It takes about 20 minutes to reach the city centre by ride-share or taxi once you've stepped off your flight from Knoxville McGhee Tyson Airport to Seattle.

  • Public transport can take you there in about 35 minutes.

  • Find a hotel close to BFI and go from the runway to resting in a snap. Whether you're arriving on a late TYS to Seattle flight or just want an easier arrival, these stays will have you settling in quickly:

  • Rental providers sometimes offer discounts for early bookings, so book your vehicle from BFI a few weeks ahead of your flight from Knoxville McGhee Tyson Airport to Seattle. Plan ahead and your wallet will thank you.

Best time to go to Seattle

  • December is the quietest month for flights from Knoxville McGhee Tyson Airport to Seattle, while July is the most popular. Work out the ideal time to go to Seattle based on whether you like a laid-back vibe or a more bustling atmosphere.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your Knoxville McGhee Tyson Airport to Seattle plane ticket then if this is the type of weather you enjoy.

  • February sees average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Look for a cheap ticket from TYS to Seattle around that time if you like cooler conditions.

More about Seattle

  • When it comes to searching for somewhere to rest your head, you'll find the best places to stay in Seattle right here. Check out these hotels once you've locked in your flight from Knoxville McGhee Tyson Airport to Seattle:

  • There are so many things to discover in this city it can be tricky to know where to start. Pike Place Market, Space Needle and Seattle Skyline are top sights which should be on any good Seattle itinerary.

Explore more of the United States

  • You've done Seattle, now it's time to explore other corners of the United States. Journey about 241 kilometres south to Portland to check off its must-visit sights. From Portland Japanese Garden to Peninsula Park Rose Garden and Beyond Van Gogh Portland, there's plenty to keep you on the go.

  • Spokane is another must-experience destination in the United States and is around 370 kilometres east of Seattle. No journey is complete without visiting Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

Plan the rest of your trip from Knoxville to Seattle

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