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Find flights to Ontario from $67. Fly from the United States on Flair Airlines, Delta, WestJet and more. Search for Ontario flights on KAYAK now to find the best deal.
On average, a flight to Ontario costs $137. The cheapest price found on KAYAK in the last 2 weeks cost $20 and departed from Sacramento. The most popular routes on KAYAK are San Francisco to Ontario which costs $105 on average, and Denver to Ontario, which costs $110 on average.
Use Google Flights to find cheap departing flights to Ontario and to track prices for specific travel dates for your next getaway.
Book cheap flights to Ontario (ONT) with United Airlines. Enjoy all the in-flight perks on your Ontario flight, including speed Wi-Fi.
Looking for a cheap last-minute deal or the best round-trip flight to Ontario International? Find the lowest prices on one-way and round-trip tickets right here.
Explore the best flight deals from anywhere to everywhere, then book with no fees. Compare flight deals from over 1,000 providers, and choose the cheapest, fastest or lowest-emission tickets. Find the cheapest month – or even day – to fly, and set up Price Alerts to book when the price is right.
