Cheap Flights from Ontario International (ONT) to Seattle (SEA)

How to find cheap flights to Seattle from Ontario International

Looking for cheap tickets from Ontario International to Seattle? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

• Simply hit "search." From Delta Air Lines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Ontario International to Seattle. And with us, there are no hidden fees – what you see is what you pay.
• Compare flight deals to Seattle from Ontario International from over 1,000 providers. Then choose the cheapest plane tickets or fastest journeys.
• Flex your dates to find the best Ontario International–Seattle ticket prices. If you're flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to Seattle from Ontario International.
• Set up a Price Alert. You can easily track the fare of your cheap Ontario International–Seattle flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
• Fly without stops. Only interested in direct flights between Ontario International and Seattle? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results.
• Find the cheapest Business Class flights from Ontario International and Seattle. We scour the Internet for the best Business, Premium Economy and First Class flight fares to Seattle, too. Check the difference in price as you search – you might just stumble on a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
• Include nearby airports in your search. Widen your search for Ontario International to Seattle flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save the next time you travel.

Combine your flight to Seattle from Ontario International with hotels and car rental

Once you've secured your cheap flight ticket from Ontario International to Seattle, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car rental companies at once so you get the best car rental price for your trip.