Cheap SEA to Tri-Cities flights

Book your SEA to TRI flights with Expedia and find last-minute Seattle to Tri-Cities airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between SEA and TRI, with new flight deals and promotions almost daily. When you book your next trip from Seattle Tacoma Intl. to Tri Cities Regional with Expedia, you can rest assured you’re getting great ticket prices and excellent service from one of the world’s most trusted travel providers.

SEA to TRI Route Map

Seattle to Tri-Cities Flights, Stats and Airplanes

Route information for flights from Seattle Tacoma Intl. to Tri Cities Regional.

Distance:
2,157.67 miles

SEA - Seattle Tacoma Intl. Airlines

Browse the most popular airlines servicing the Seattle (SEA) airport. Visit their flights pages to learn more about the most popular routes these carriers fly.

TRI - Tri Cities Regional Airlines

Browse the most popular airlines servicing the Tri-Cities (TRI) airport. Visit their flights pages to learn more about the most popular routes these carriers fly.