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.

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.

Exploring all airports near Ontario and Seattle

Checking all the airports available in the area can give you more departure and arrival options for your trip.

• Airports in Ontario: Ontario is currently the only one operating.
• Airports in Seattle: Seattle is served by 2 airports - Boeing Field, Lake Union.

Looking at expected traffic to the airport can help avoid surprises on departure day. On busy routes, flying from a quieter airport might also save you money.

Customize your flight from Ontario to Seattle

Jetcost allows you to filter by travel dates, duration, layovers, carriers, and booking providers. You’ll find direct and connecting flights, one-way or round-trip, from the best airlines and travel agencies.

Other popular destinations

Thinking about United States? You might also consider: Las Vegas, Los Angeles, Miami, New York City, Orlando.

You can sort results by price, duration, or departure time to find the best option for you. When available, results always include both low-cost and traditional airlines.