Search results
If traveling to Ontario, the cheapest city to fly from in the last 3 days was Seattle, with flights as low as $34 one-way and $38 round-trip. Flights from San Francisco are the most searched and start at $38 for a return trip.
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.
Find flights to Ontario from $76. Fly from the United States on WestJet, Flair Airlines, Air Canada and more. Search for Ontario flights on KAYAK now to find the best deal.
Use Google Flights to explore cheap flights to anywhere. Search destinations and track prices to find and book your next flight.
Use Google Flights to find cheap departing flights to Ontario and to track prices for specific travel dates for your next getaway.
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. Show more
We've compared plane tickets from all major online travel agents and airlines flying to Ontario to find the cheapest flights. And with us, there are no hidden fees – what you see is what you pay. Flex your dates to secure the best air ticket price for your Ontario flight.
