How much should you expect to spend for a flight from Ontario to Chicago?

Flight prices from Ontario to Chicago change depending on demand and time of booking.

Pick a travel date to see today’s available fares.

Studies show that flying midweek — like on a Tuesday or Wednesday — can be cheaper than weekend flights. Still, airfares change frequently, so check updated prices on Jetcost.

Which airports serve Ontario and Chicago?

When planning a trip of about 2746 km, it's a good idea to check flights from surrounding airports too.

• Airports in Ontario: Ontario is the only operational airport in the area.
• Airports in Chicago: Chicago offers flights from 3 airports - Midway, O'Hare, Rockford.

The closest airport isn’t always the cheapest — it’s worth checking the alternatives too. In some cities, smaller airports offer lower fares than the main ones.

Customize your flight from Ontario to Chicago

Jetcost allows you to filter by travel dates, duration, layovers, carriers, and booking providers. You’ll find direct and connecting flights, one-way or round-trip, from the best airlines and travel agencies.

Other popular destinations

Thinking about United States? You might also consider: Las Vegas, Los Angeles, Miami, New York City, Orlando.

You can sort results by price, duration, or departure time to find the best option for you. When available, results always include both low-cost and traditional airlines.