Flights from Chicago to Ontario Intl

Use the flight search form to:

• get the price graph for the next days, weeks and months
• narrow flight results by the time of the day of departure/arrival
• narrow flight results by price range and preferred airlines
• for indirect flights, search by stopover airport (if available)
• compare live prices for the same flight by multiple vendors
• find much more flights to Ontario Intl than listed below

Why to use flight search on Maplandia.com?

Millions of routes

We compare ONT offers from all major airlines, including the budget carriers. Find always the cheapest flight.

Direct booking

When you find a deal you want, you are redirected to book directly with the airline or travel agent. No middlemen.

No hidden charges, no added fees

The price you see is the price on the airline's site. Remember: you are always booking directly with the airline or travel agent.