Cheap flights from Ontario, CA to Chicago
Travel > North America > United States > Ontario, CA to Chicago flights
Travel tip: It is a great place for Sushi with average prices, so if you like Japanese food, here is a great possibility. You have to make sure you reserved a table before you would dare go there, otherwise you would have to wait a lot, there are a lot of people, which is actually a sign of good cuisine.Check our current prices for flights from Ontario, CA to Chicago. Please note that we also give you historical search data for this city connection. These are all airfares that people found in the past, in order to find more current flight information from Ontario, CA to Chicago, you will need to run a search below.
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Cheap Chicago airfares from $355/RT are provided by Cheapoair.com. Outbound flight is leaving on 09/10/2025, 12:59 am from Ontario Int`l (ONT) airport and arrives at Chicago O`hare (ORD) at 11:53 pm. The flight time is 22 hours and 54 minutes. The Returning flight departes on 09/14/2025, 06:00 am (other return dates are also available). Date posted: 16 Jun 2025
Price evolution for flights From Ontario, CA To Chicago
Recent Deals on Flights from Ontario, CA to Chicago:Roundtrip / Oneway
- $355
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Chicago, IL (ORD) 09/10/2025 12:59 am Chicago, IL (ORD) Ontario, CA (ONT) 09/14/2025 06:00 am - $383
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Chicago, IL (ORD) 09/10/2025 10:56 pm Chicago, IL (ORD) Ontario, CA (ONT) 09/14/2025 06:00 am - We are sorry but currently there are no oneway offers for flights from Ontario, CA to Chicago.
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