Cheap Flights from Tri-Cities (TRI) to Seattle (SEA)

Flight 1

Popular airlines from Tri-Cities, TN (TRI-Tri-Cities Regional) to Seattle-Tacoma International Airport (SEA)

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Find the cheapest month to fly from Blountville (TRI) to Seattle (SEA)

September is typically the cheapest month to fly

From ₩539,530 - ₩964,287 per traveler.

Frequently asked questions

How much is a flight from Tri-Cities Airport to SEA?
Round-trip flights from Tri-Cities Airport to Seattle - Tacoma Intl. Airport (SEA) start from . This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Tri-Cities Regional Airport (TRI) to SEA?
Most flights can be canceled online, but whether or not you incur a fee varies between airlines. If you do have to cancel your vacation, follow the instructions in the Customer Service Portal.
How do I find cheap flights from TRI to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Tri-Cities Airport to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA)?
You'll be up above the clouds for a while, as the flight distance from Blountville to SeaTac is 3,500 kilometers. Create a playlist of your favorite tunes before you leave home to stay entertained during your trip.
Which airlines fly direct from TRI to SEA?
Flying directly between Tri-Cities Airport and SEA isn't possible at the moment. However, you'll still be able to find a flight to SeaTac with at least one stop.
Are Tri-Cities Regional Airport (TRI) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to score an amazing last-minute deal from Tri-Cities Regional Airport (TRI) to Sea-Tac Airport, but it's also possible to miss out altogether! As many airlines publish prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals often, so you can rest assured you're always seeing the latest offers.

Travel information

Origin airport
Tri-Cities Regional
Destination airport
Seattle - Tacoma Intl.
Distance
3451 km
*Available to Expedia members.