Cheap Flights from Ontario to Seattle
Compare Ontario International to Seattle / Tacoma International flight deals
Find the cheapest month or even day of the year to fly to Seattle / Tacoma International
Book the best Seattle / Tacoma International fare with no extra fees
Flight deals from Ontario International to Seattle / Tacoma International
Looking for a cheap last-minute deal or the best return flight from Ontario International to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.Don’t miss a great deal
Stay one step ahead. Find the best value travel with the latest deals, tips and news.
Find the cheapest month to fly from Ontario International to Seattle / Tacoma International
We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Seattle / Tacoma International flights are currently cheapest in June.Ontario International to Seattle / Tacoma International: Alternative routes
Compare routes from Ontario International to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.Finding cheap flights from Ontario International to Seattle / Tacoma International: Frequently asked questions
How to find cheap flights to Seattle (SEA) from Ontario (ONT) in 2024
Looking for cheap tickets from Ontario International to Seattle / Tacoma International? Return tickets start from $147 and one-way flights to Seattle / Tacoma International from Ontario International start from $68
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 British Airways 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 to Seattle / Tacoma. And with us there are no hidden fees - what you see is what you pay.
- Compare flight deals to Seattle from Ontario from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to Seattle start from $68 one-way.
- Flex your dates to find the best ONT-SEA ticket prices. If you are 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 / Tacoma International from Ontario International.
- Set up a Price Alert. You can easily track the fare of your cheap Ontario-Seattle / Tacoma 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 / Tacoma International? 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. Airlines that fly direct include: WestJet
Alaska Airlines
KLM
Delta
SkyWest Airlines
Qatar Airways
Virgin Atlantic
Volaris - Flexible on when you travel? The cheapest month to fly from Ontario International to Seattle / Tacoma International is September.
- Find the cheapest Business class flights from Ontario International and Seattle / Tacoma International. 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 chance upon 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 / Tacoma International 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 next time you travel.
- Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between Ontario International and Seattle / Tacoma International whenever you want.
Combine your flight to Seattle / Tacoma International from Ontario International with hotels and car hire
Once you've secured your cheap flight ticket from Ontario International to Seattle / Tacoma International, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.
Plan the rest of your trip from Ontario to Seattle
Prices shown on this page are estimated lowest prices only. Found in the last 45 days.