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If traveling to Ontario, the cheapest city to fly from in the last 3 days was San Francisco, with flights as low as $33 one-way and $38 round-trip. Flights from Seattle are the most searched and start at $48 for a return trip.
Direct flights from more than 900 airlines on an interactive flight map. Search, find and compare any flight path or airline route with our flight maps!
The cheapest ticket to Ontario from the United States found in the last 72 hours was $26 one-way, and $92 round-trip. The most popular route is New York LaGuardia to Toronto Pearson Intl and the cheapest round-trip airline ticket found on this route in the last 72 hours was $199.
Use Google Flights to find cheap departing flights to Ontario and to track prices for specific travel dates for your next getaway.
Compare Ontario International Airport flights across hundreds of providers. Find the cheapest month or even day of the year to fly. Book the best flight with no fees. Flight deals to Ontario International. Looking for a cheap last-minute deal or the best round-trip flight to Ontario International?
