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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.
Use Google Flights to find cheap departing flights to Ontario and to track prices for specific travel dates for your next getaway.
We've compared ticket prices from all top online travel agents and airlines flying to Ontario International Airport to get you the cheapest flights. With Skyscanner, there are no hidden fees – the price you see is the price you pay.
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.
Ontario Intl Airport offers nonstop flights to 17 cities. Every week, at least 476 domestic flights and 8 international flights depart from Ontario Intl Airport.
$24 Cheap Flights to Ontario, CA. Roundtrip. One-way. Multi-city. 1 traveler. Economy. Looking for cheap flights to Ontario? Many airlines offer no change fee on selected flights and book now to earn your airline miles on top of our rewards! Find great 2024 Ontario flight deals now!
