Non-stop from Chicago to Ontario, California (& vice versa) for only $144 roundtrip

_Chicago / _Ontario / Chicago / Chicago, USA → Ontario, USA / Deal / Depart USA / Economy / Flight / Non-Stop / North America / Ontario / Ontario, USA → Chicago, USA / Standard Route / United Airlines
Flight deals from Chicago to Ontario, California | Secret Flying

Non-stop flights from Chicago to Ontario, California for only $144 roundtrip with United Airlines.

Also works in reverse.

 

DEPART:
Chicago, USA

 

ARRIVE:
Ontario, USA

 

RETURN:
Chicago, USA

 

DATES:
Availability from September 2026 to February 2027 (excluding Christmas/New Year)

Example dates:

 

Chicago – Ontario
5th-12th Sep
12th-19th Sep
7th-14th Nov
10th-17th Nov
6th-13th Feb
13th-20th Feb

 

Ontario – Chicago
5th-12th Sep
12th-19th Sep
31st Oct – 7th Nov
7th-14th Nov
30th Jan – 6th Feb
6th-13th Feb
20th-27th Feb

and more…

 

STOPS:

 

AIRLINES:
United Airlines

 

 

GO TO DEAL

 

Non-stop flights from Chicago to Ontario, California for only $144 roundtrip with United Airlines. Also works in reverse. Flight deal ticket image.

All the information on this page is accurate at the time of publication.

If you are viewing this deal at a later date, the price and availability may no longer be as advertised.

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