Cheap flights from Seattle to Ontario

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How much should you expect to spend for a flight from Seattle to Ontario?

Flight prices from Seattle to Ontario change depending on demand and time of booking.

Pick a travel date to see today’s available fares.

Studies show that flying midweek — like on a Tuesday or Wednesday — can be cheaper than weekend flights. Still, airfares change frequently, so check updated prices on Jetcost.

Is there more than one airport in Seattle or Ontario?

Even short-haul routes can benefit from considering secondary airports. It may open up more flight times or cheaper fares.

  • Airports in Seattle: Seattle has 2 airports - Boeing Field, Lake Union.
  • Airports in Ontario: Ontario is the only airport in operation.

Airports with more daily flights offer more flexibility if plans change or delays occur. If you’re flexible, consider airports near Ontario as well.

Plan smarter: flights from Seattle to Ontario

Find the flight that fits your plans with Jetcost. You can filter results by stops, agencies, budget, time of day, and airline — all in one search.

Other popular destinations

Travelers flying to United States also checked out: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Comparing offers from multiple agencies helps you find the best price for the same route. You can also spot exclusive deals from individual airlines right in the results list.
Frequently Asked Questions

Frequently asked questions about flights from Seattle to Ontario.

How much does an airline ticket from Seattle to Ontario cost?

Flight prices can vary a lot depending on the period and destination. At the moment, this information is not available for flights from Seattle to Ontario.

How far is Seattle from Ontario?

Seattle is about 1540 km from Ontario.

What are the airports in Ontario?

Ontario has one airport: Ontario.

What are the airports in Seattle?

Seattle has 2 airports: Boeing Field, Lake Union.

What are the most popular cities in United States?

The most popular cities in United States according to our users' searches are: Las Vegas, Los Angeles, Miami, New York City, Orlando.

When should I book a flight from Seattle to Ontario?

The best time to book a flight from Seattle to Ontario is 1 month in advance, while the worst time is 1 week in advance.

What is the cheapest month to fly from Seattle to Ontario?

This information is not available at the moment.

What is the most expensive month to fly from Seattle to Ontario?

This information is not available at the moment.

What is the best day of the week to fly from Seattle to Ontario?

This information is not available at the moment.