Cheap Flights from Ontario International to Seattle / Tacoma International

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 round-trip flight from Ontario International to Seattle / Tacoma International? Find the lowest prices on one-way and round-trip tickets right here.

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 November.

Direct flights from Ontario International to Seattle / Tacoma International

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.

Ontario to Seattle: Flight information

The things to know before you go.
Cheapest flight foundAED 213
Cheapest month to flyNovember
Average flight time2 hrs, 56 mins
Most popular airlineWestJet
Average flights per week167

Finding cheap flights from Ontario International to Seattle / Tacoma International: Frequently asked questions

The best price we found for a round-trip flight from Ontario International to Seattle / Tacoma International is AED 212. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 56 minutes is the average flight time from Ontario International to Seattle / Tacoma International.
WestJet, Hawaiian Airlines and Alaska Airlines fly direct from Ontario International to Seattle / Tacoma International.
There are 167 flights per week flying from Ontario International to Seattle / Tacoma International, as of October 2024.
The cheapest month to fly from Ontario International to Seattle / Tacoma International is usually October 2024.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Seattle / Tacoma International Airport on Thursday, November 21, 2024.
Yes – the average flight time is 2 hours and 56 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to Seattle / Tacoma International.

How to find cheap flights from Ontario International to Seattle / Tacoma International

Looking for cheap flight tickets from Ontario International to Seattle / Tacoma International? Skyscanner compares flight prices across more than 1,200 airlines and travel providers.

Regardless of whether you're looking for a one-way ticket to Seattle / Tacoma International or a return flight, here are some tips to secure the best flight price and make planning your journey as smooth as possible.

  • Simply hit search. From Emirates and Etihad to international carriers like Air India and Wizz Air, we compare all major airlines with the most popular online travel agents to find the cheapest plane tickets from Ontario International to Seattle / Tacoma International. And with us there are no hidden fees - what you see is what you pay.

  • Flex your dates to find the cheapest ONT - SEA flight tickets on Skyscanner. Search for flights but don’t enter the departure date and instead click ‘whole month’. This tool will find the cheapest month and dates to fly to Seattle / Tacoma International from Ontario International.

  • Set up a Price Alert for Ontario International-Seattle / Tacoma International flight tickets. You can easily track the fare of flights by creating an alert. Whenever prices go down or up, you'll get an email to help make sure you get the best possible flight deal. Or download our app and get price alerts straight to your phone.

  • Fly without stops. Only interested in direct flights between Ontario International and Seattle / Tacoma International? Make sure to tick 'Non-stop flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.

Hotels in Seattle / Tacoma International

Looking for a hotel in Seattle / Tacoma International? Whether you’re looking for a local hotel or a global brand, discover the best prices and exclusive rates for hotels in Seattle / Tacoma International by comparing the biggest names in travel.

Car hire in Seattle / Tacoma International

If you’re looking for car rental in Seattle / Tacoma International, we can help you uncover the best car hire deals. We search hundreds of car hire companies allowing you to instantly compare prices and then book.

Book flight tickets from Ontario International to Seattle / Tacoma International with extra peace of mind

Back in 2020, most airlines introduced policies to make travel during COVID-19 as easy as possible. The worst of the pandemic is now over, but some of these policies remain in place for you to take advantage of as you step back out into the world.

  • Find flexible getaways. Some airlines introduced flexible booking policies in 2020 – and many of these are still available. If you book a flexible plane ticket from Ontario International to Seattle / Tacoma International, it means your money is still safe if your flights are changed or cancelled due to COVID-19.

  • Get insured. Choose travel cost protection that covers COVID-19, too. It's available at the checkout as you book your flight from Ontario International to Seattle / Tacoma International with us.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.