Unable to find information about the schedule of direct flights from
Helping travelers to find the best flight offers
In different months, ticket prices from Chicago to Ontario vary: minimum — $107 (December 2025), maximum — $303 (July 2026). Typically, the flight costs $224–$282.
A direct flight is the most convenient and comfortable way to fly from Chicago to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Chicago to Ontario:
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We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Looking for affordable flights from Chicago to Ontario? Look no further! Our air ticket search website offers the best deals on flights from Chicago, United States to Ontario, United States. Whether you're planning a business trip or a weekend getaway, we've got you covered with cheap flights that won't break the bank. With a user-friendly interface and a wide range of flight options, finding the perfect airfare has never been easier. So why wait? Start your search now and book your tickets to Ontario at unbeatable prices. Don't miss out on this opportunity to save big on your next flight!
Unable to find information about the schedule of direct flights from
The cheapest one-way flight from Chicago to Ontario departs on 02/18/2026, is operated by American Airlines and costs $46
The cheapest roundtrip flight from Chicago to Ontario departs on 02/13/2026, is operated by United Airlines and costs $149
Fastest flight from Chicago to Ontario takes 4h 39m
There are direct flights on this route 3 days a week: We, Th, and Sa
The distance between Chicago and Ontario is 2754km (1707 miles). There are 11 direct flights from Chicago to Ontario. The time difference between Chicago and Ontario is 2h. Flights from Chicago begin at 8:25 AM. The latest flight from Chicago departs at 7:59 PM
Chicago — Los Angeles
12/07/2025
Departure
Direct flight
WN2327
Starting at $402
Chicago — Los Angeles
12/23/2025
Departure
Direct flight
AA1979
Starting at $293
Chicago — Los Angeles
12/07/2025
Departure
Direct flight
AA1179
Starting at $439
Chicago — Los Angeles
12/10/2025
Departure
Direct flight
UA308
Starting at $422
Chicago — Los Angeles
01/22/2026
Departure
Direct flight
UA1044
Starting at $116
Chicago — Los Angeles
02/17/2026
Departure
Direct flight
WN2798
Starting at $192
Chicago — Los Angeles
12/08/2025
Departure
Direct flight
UA1525
Starting at $484
Chicago — Los Angeles
12/12/2025
Departure
Direct flight
F92445
Starting at $211
Chicago — Los Angeles
12/15/2025
Departure
Direct flight
UA2124
Starting at $358
Chicago — Los Angeles
12/24/2025
Departure
Direct flight
UA1044
Starting at $330
Starting at $192
Starting at $46
Starting at $116
Starting at $97
Starting at $106
The route Chicago — Ontario is served by many carriers — 5 in total, including Southwest Airlines, American Airlines, United Airlines, Frontier Airlines, and Spirit Airlines. This gives passengers wide opportunities: from finding the lowest fare (from $46) to selecting flights by schedule or service class. Our service aggregates data from multiple booking systems so you can compare offers in one place. This saves time and money: no need to check dozens of sites — just pick the right option and book online.
The cheapest flight ticket from Chicago to Ontario according to data for the last 48 hours costs $46
Often the best time to buy tickets from Chicago to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Chicago to Ontario can be found flying in these months: December, February, April.
The fastest flights from Chicago to Ontario start from 4 hours 39 minutes in the air.
The following airlines operate direct flights on the route Chicago — Ontario: Southwest Airlines, American Airlines, United Airlines
We couldn't find any special offers for flights from Chicago to Ontario
