Chicago to Ontario - Flights Starting at US$43
Book one-way or return flights from Chicago to Ontario from as little as US$43. Choose from the popular airlines below and book your flight today!
- One way
- Round-trip
- MDW22:559h 31m1 stopONT06:26Tue, May 7|Chicago - Ontario|Frontier AirlinesUS$43US$6332% OFF32% OFFUS$63US$43
- ORD17:568h 3m1 stopONT23:59Sat, May 18|Chicago - Ontario|Frontier AirlinesUS$43US$6332% OFF32% OFFUS$63US$43
- ORD18:2713h 59m1 stopONT06:26Tue, Apr 30|Chicago - Ontario|Frontier AirlinesUS$44US$6331% OFF31% OFFUS$63US$44
- ORD18:277h 32m1 stopONT23:59Wed, May 8|Chicago - Ontario|Frontier AirlinesUS$44US$44
- ORD18:277h 32m1 stopONT23:59Wed, May 1|Chicago - Ontario|Frontier AirlinesUS$44US$44
- ORD18:2713h 59m1 stopONT06:26Tue, May 14|Chicago - Ontario|Frontier AirlinesUS$46US$46
- MDW09:119h 49m1 stopONT17:00Thu, May 2|Chicago - Ontario|Frontier AirlinesUS$47US$47
- MDW14:4511h 14m1 stopONT23:59Tue, May 21|Chicago - Ontario|Frontier AirlinesUS$48US$48
- MDW21:1013h 54m1 stopONT09:04Mon, May 20|Chicago - Ontario|Frontier AirlinesUS$48US$48
- ORD18:277h 32m1 stopONT23:59Wed, May 15|Chicago - Ontario|Frontier AirlinesUS$51US$51
- CHI13:003h 5mDirectONT14:00Sat, May 4|Chicago - Ontario|Frontier AirlinesFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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View airlines operating flights from Chicago to Ontario. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Find more flights and airlines
Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Chicago to Ontario.
- CheapestORD18:277h 32m1 transferONT23:59O'Hare International Airport - Ontario International AirportTue, May 7Frontier AirlinesUS$43
- MDW22:559h 31m1 transferONT06:26Midway International Airport - Ontario International AirportTue, May 7Frontier AirlinesUS$43
- RFD21:5421h 5m1 transferONT16:59Chicago Rockford International Airport - Ontario International AirportFri, May 3Allegiant AirUS$107
- RFD21:5421h 5m1 transferONT16:59Chicago Rockford International Airport - Ontario International AirportFri, May 3Allegiant AirUS$107Find More Flights
Frequently Asked Questions
How to find a cheap flight from Chicago to Ontario
Cheapest nonstop flight price | $42 |
---|---|
Cheapest round-trip ticket price | $87 |
Off-season for travel | September |
Peak season for travel | November |
Flight distance | 9,812.12km |
Popular airline | Alaska Airlines |
Plan Your Trip Around Ontario
More Travel Options | Chicago to Ontario
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