Book your ONT to SEA flights with Expedia and find last-minute Ontario to Seattle airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between ONT and SEA, with new flight deals and promotions almost daily. When you book your next trip from Ontario Intl. to Seattle Tacoma Intl. 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.
ONT to SEA Flight Schedule
Browse popular flight destinations from Ontario (ONT), and plan your next exciting trip. Expedia has cheap flights from Ontario on multiple airline carriers, so book your next trip today!
Browse popular flight destinations from Seattle (SEA), and plan your next exciting trip. Expedia has cheap flights from Seattle on multiple airline carriers, so book your next trip today!
ONT to SEA Route Map
Route information for flights from Ontario Intl. to Seattle Tacoma Intl..
Airline carriers and aircraft used on flights from ONT to SEA
|Alaska Airlines, Inc.||Boeing 737-400 pax|
|Alaska Airlines, Inc.||Boeing 737-700 pax|
|American Airlines||Boeing 737 all pax models|
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