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On average, a flight to Ontario costs $139. The cheapest price found on KAYAK in the last 2 weeks cost $17 and departed from Las Vegas. The most popular routes on KAYAK are San Francisco to Ontario which costs $118 on average, and Denver to Ontario, which costs $128 on average. See prices from:
Use Google Flights to find cheap departing flights to Ontario and to track prices for specific travel dates for your next getaway.
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 $199.
Find cheap flights from the United States to Ontario from C$ 40. Search the best prices round-trip for Porter Airlines, Flair Airlines, Delta from 300+ websites. Get real-time pricing on the United States to Ontario airfare in seconds on Cheapflights.ca today.
Book cheap flights to Ontario (ONT) with United Airlines. Enjoy all the in-flight perks on your Ontario flight, including speed Wi-Fi.
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