Find out what a flight from Seattle to Ontario might cost

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

Select your dates to check current offers.

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.

Airport options between Seattle and Ontario

Even for routes around 1540 km, using different airports might affect flight cost and travel time.

• Airports in Seattle: You can fly from 2 airports in Seattle - Boeing Field, Lake Union.
• Airports in Ontario: Ontario is the only functioning airport.

Checking the average travel time to the airport can help you plan better. For some routes, changing your arrival or departure airport might also affect the price.

Adjust your flight filters for Seattle – Ontario

Jetcost gives you tools to search smarter. Pick your ideal price range, airline, departure time, and flight type — then compare offers from the best travel agencies and carriers.

Other popular destinations

Planning a trip to United States? These cities are popular too: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Sorting options let you see the most affordable flights first. Some results may include extra fees shown only at checkout — always read carefully to see what’s included.