$257 Cheap flights from Tri-Cities Regional to Seattle - Tacoma Intl. (TRI to SEA)

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Find The Best Dates To Fly from Tri-Cities Regional to Seattle - Tacoma Intl.

Compare Flight Prices from Tri-Cities to Seattle

Affordable Airfare Tickets from TRI to SEA Airport

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $424 round trip and $257 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Jun 3 - Wed, Jun 11
TRI
Tri-Cities
SEA
Seattle
$424 Roundtrip, found 4 days ago
$424
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Jun 3 from Tri-Cities to Seattle, returning Wed, Jun 11, priced at $424 found 4 days ago
Thu, Aug 7 - Tue, Aug 12
TRI
Tri-Cities
SEA
Seattle
$448 Roundtrip, found 3 days ago
$448
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 7 from Tri-Cities to Seattle, returning Tue, Aug 12, priced at $448 found 3 days ago
Thu, Jul 31 - Tue, Aug 5
TRI
Tri-Cities
SEA
Seattle
$458 Roundtrip, found 6 hours ago
$458
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Jul 31 from Tri-Cities to Seattle, returning Tue, Aug 5, priced at $458 found 6 hours ago
Mon, Jun 2 - Wed, Jun 11
TRI
Tri-Cities
SEA
Seattle
$473 Roundtrip, found 4 days ago
$473
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Jun 2 from Tri-Cities to Seattle, returning Wed, Jun 11, priced at $473 found 4 days ago
Mon, Jun 2 - Tue, Jun 10
TRI
Tri-Cities
SEA
Seattle
$483 Roundtrip, found 1 day ago
$483
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Jun 2 from Tri-Cities to Seattle, returning Tue, Jun 10, priced at $483 found 1 day ago
Tue, Jun 3 - Wed, Jun 11
TRI
Tri-Cities
SEA
Seattle
$484 Roundtrip, found 4 days ago
$484
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jun 3 from Tri-Cities to Seattle, returning Wed, Jun 11, priced at $484 found 4 days ago
Mon, Jun 2 - Mon, Jun 9
TRI
Tri-Cities
SEA
Seattle
$493 Roundtrip, found 1 day ago
$493
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Jun 2 from Tri-Cities to Seattle, returning Mon, Jun 9, priced at $493 found 1 day ago
Wed, Aug 20 - Sun, Aug 31
TRI
Tri-Cities
SEA
Seattle
$501 Roundtrip, found 6 days ago
$501
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Aug 20 from Tri-Cities to Seattle, returning Sun, Aug 31, priced at $501 found 6 days ago
Wed, Jun 4 - Wed, Jun 11
TRI
Tri-Cities
SEA
Seattle
$504 Roundtrip, found 4 days ago
$504
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jun 4 from Tri-Cities to Seattle, returning Wed, Jun 11, priced at $504 found 4 days ago
Wed, May 21 - Thu, May 29
TRI
Tri-Cities
SEA
Seattle
$510 Roundtrip, found 6 days ago
$510
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, May 21 from Tri-Cities to Seattle, returning Thu, May 29, priced at $510 found 6 days ago

Frequently asked questions

Are there direct flights from TRI to Sea-Tac Airport?
Prepare for a stopover when traveling from Tri-Cities Regional Airport (TRI) to Sea-Tac Airport. There are no direct flights on this route, however American Airlines, Delta and WestJet will get you to your destination as swiftly as possible.
How long is the flight from TRI to Seattle - Tacoma Intl. Airport (SEA)?
The journey between TRI and SEA is ordinarily around 6 hours and 47 minutes. Make your trip comfortable by downloading a few shows on your tablet or laptop and enjoying them with your seat fully reclined.
What is the flight distance from Tri-Cities Airport to SEA?
The flight distance from Tri-Cities Regional Airport (TRI) to Seattle - Tacoma Intl. Airport (SEA) is 2,200 mi. Remember to bring a magazine or a few crosswords to make the journey fly by.
What airlines fly from Tri-Cities Airport to Sea-Tac Airport?
Unfortunately, you won’t find any airlines that fly straight from TRI to SEA. But don’t let that get in the way of a good trip. Use your stopover time as an opportunity to stretch your legs, check out the local fare and potentially find a new city to add to your bucket list.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Flight information from Tri-Cities to Seattle

 

Traveling From
Tri-Cities Regional
Traveling To
Seattle - Tacoma Intl.
Shortest Flight Time
 hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price
$424

Discover our best flights from Tri-Cities TRI to Seattle SEA. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Tri-Cities TRI to Seattle SEA at the right price  

Airfares to Seattle SEA from Tri-Cities TRI currently cost between $424 and $510. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Tri-Cities TRI to Seattle SEA 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Tri-Cities TRI to Seattle SEA on Travelocity starting at $257. Prices and availability subject to change. Additional terms may apply. 

 

Get to Seattle SEA from Tri-Cities TRI quicker with direct flights. 

Get to Seattle faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to SEA from TRI to take around hour(s) min(s).  

 

Find our cheapest airfares for flights from Tri-Cities TRI to Seattle SEA

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to SEA from TRI. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Tri-Cities TRI to Seattle SEA today 

If you’re flexible about when you travel, June is usually the cheapest month to fly from Tri-Cities TRI to Seattle SEA. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Seattle SEA from Tri-Cities TRI 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to SEA from TRI have this option.  

 

Travel with confidence when you book flights to Seattle SEA from Tri-Cities TRI with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.