$164 Cheap Flights from Seattle (SEA) to Tri-Cities (TRI)

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Flight deals we found

These prices are lower than our typical predictions for similar flights.
50% less than typical
$589
Roundtrip per traveler
Wed, Jun 12 - Sun, Jun 16
DeltaDelta
13h 9m
5:30pm
9:39am
+1
SEA
1 stop • 7h 4m in ATL
TRI
Found 14 hours ago
45% less than typical
$655
Roundtrip per traveler
Thu, Jul 4 - Sun, Jul 7
American AirlinesAmerican Airlines
7h 17m
11:59pm
10:16am
+1
SEA
1 stop • 55m in CLT
TRI
Found 6 hours ago
45% less than typical
$665
Roundtrip per traveler
Thu, Jul 4 - Sun, Jul 7
American AirlinesAmerican Airlines
7h 17m
11:59pm
10:16am
+1
SEA
1 stop • 55m in CLT
TRI
Found 4 hours ago

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

Prices were available within the past 7 days and start at $164 for one-way flights and $479 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
American Airlines
American Airlines
American Airlines
Delta
Delta
Delta
Delta
Delta
Delta
Flights from Seattle (SEA) to Tri-Cities (TRI)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Tri-Cities Regional
Airlines serving
American Airlines, Delta
Roundtrip price
$478
Distance
2157 mi

Seattle to Tri-Cities Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to Tri-Cities offer the perfect respite. Not only does exploring Tri-Cities provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Seattle to Tri-Cities may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Tri-Cities are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Tri-Cities more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Tri-Cities is $164 now!

Frequently asked questions

How much is a one-way flight from Sea-Tac Airport to Tri-Cities Regional Airport (TRI)?
You can bag one-way Seattle flights to Blountville starting from only $331. This information is based on the cheapest price located on Expedia for this route departing during the next three months and was updated on April 30 2024 and has not changed since. This particular airfare is for an Delta service, jetting off from Seattle - Tacoma Intl. Airport (SEA) on May 11 2024 and landing at TRI.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to TRI last minute?
When it’s time to book your flights, it’s better to be prepared. While you may be able to score a deal on a Seattle - Tacoma Intl. Airport (SEA) to TRI flight at the last minute, tickets usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international travel it’s three to four months.
What is the cheapest airline flying from Sea-Tac Airport to Tri-Cities Airport in the next 90 days?
With plane tickets from $331 for a flight from Seattle to Blountville, Delta is the cheapest airline found on Expedia. This deal is based on airfares found on Expedia with a departure date within the next 90 days and was updated on April 30 2024 and has not changed since. The flight takes off from Sea-Tac Airport on May 11 2024 and touches down at Tri-Cities Regional Airport (TRI).
What's the cheapest price for a flight from Seattle - Tacoma Intl. Airport (SEA) to Tri-Cities Airport next month?
With a one-way flight from Seattle to Blountville coming in at just $331, you’ll have more moolah left in your hand for sightseeing. This ticket price was found after searching all available flights on Expedia within the next 30 days. This particular journey leaves SEA on May 11 2024, arrives at Tri-Cities Airport and is with Delta. The price of this flight was last updated on April 30 2024 and has not changed since.
What airports do you fly into for Blountville from Seattle?
From Seattle, you can travel to Blountville through Tri-Cities Regional Airport (TRI), Abingdon, VA (VJI-Virginia Highlands) and Wise, VA (LNP-Lonesome Pine). Find out which airport is more convenient for you before you make a decision. If you pick Tri-Cities Regional Airport (TRI), it’s around 6 mi southwest of the downtown area. Use the money you save when booking your fare with Expedia to tour the city’s top sights, such as Bristol Motor Speedway and Bristol Dragway.
Can I change the date of my flight from SEA to TRI?
Plans can change, so Expedia is here to help make things easy. To start, access your Seattle - Tacoma Intl. Airport (SEA) to TRI itinerary through the Expedia Trips portal and check the fare rules and conditions about what sorts of changes are allowed. If you booked your fare in the last 24 hours, some carriers will allow you to cancel for free and organize new flights. If you bought your ticket more than 24 hours ago, connect with us via our Customer Service portal so we can help you further.
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