Find out what a flight from Ontario to Seattle might cost

Prices vary based on date, airline, and availability. Compare several options if you're flying between Ontario and Seattle.

$70 is the best price recorded in the last 15 days.

Try shifting your departure forward or backward by a day to find better options. If you’re looking for a good deal, consider flying outside peak hours as well.

Flying between Ontario and Seattle? Consider these airports

Depending on your destination and where you’re starting from, it might make sense to look beyond the main hubs.

• Airports in Ontario: Ontario has only one airport in service, Ontario.
• Airports in Seattle: Seattle has 2 airports - Boeing Field, Lake Union.

Check if your destination airport has a rail link — it can make getting around easier. Jetcost lets you view options from all Ontario airports in a single search.

Filter and compare flights from Ontario to Seattle

Jetcost helps you manage complex searches with simple filters. Sort by airline, duration, number of stops, or even time windows for outbound and return flights.

Other popular destinations

Want more ideas for your trip to United States? Check these: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Advanced filters help you skip long layovers or inconvenient times. The “airlines” filter is handy if you want to collect miles or prefer a certain onboard experience.