Find cheap flights from Washington Dulles Airport to Ontario from C$ 167
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Ontario departing on 28/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Return
1 adult
Economy
0 bags
Tue 28/5
Tue 4/6
Search hundreds of travel sites at once for deals on flights to Ontario
...and more
In the last 7 days, travellers have searched 43,623,357 times on KAYAK, and here is why:
Save 22% or moreCompare multiple travel sites with one search.
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly (5% more expensive on average)
Flight from Washington Dulles Airport to Toronto Island
FAQs - booking Ontario flights
How does KAYAK find such low prices on flights from Washington Dulles Airport to Ontario?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Ontario.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Ontario?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington Dulles Airport to Ontario?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Washington Dulles Airport with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Ontario?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
See more FAQs
Top tips for finding cheap flights to Ontario
Looking for a cheap flight? 25% of our users found tickets from Washington Dulles Airport to the following destinations at these prices or less: Toronto C$ 181 one-way - C$ 345 round-trip; Toronto C$ 246 one-way - C$ 435 round-trip
Morning departure is around 4% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days
Book cheap flights from Washington, D.C. to Ontario