Cheap flights from Illinois to Ontario, CA

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Fort William Historical Park: this is one of the most visited places of this city as one learns about the nineteenth century fur trade. Apart from fur trading, this attraction is also popular for spectacular sights that captivate the visitors in an interesting way.... (read more in our Ontario Sightseeing)

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Chicago 

Check our newest flight offers to Ontario, CA:

  • $155Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Chicago, IL (ORD)Ontario, CA (ONT)12/05/201706:30 am
    Ontario, CA (ONT)Chicago, IL (ORD)12/12/201707:00 pm
    cheapoair.com check price
  • $233Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Chicago, IL (ORD)Ontario, CA (ONT)12/05/201706:30 am
    Ontario, CA (ONT)Chicago, IL (ORD)12/12/201707:00 pm
    flyfar.ca check price
  • $240Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Chicago, IL (ORD)Ontario, CA (ONT)12/05/201706:30 am
    Ontario, CA (ONT)Chicago, IL (ORD)12/12/201707:00 pm
    flightnetwork.com check price
  • $300United Airlines flight United Airlines 
    FromToDepartureTime
    Chicago, IL (ORD)Ontario, CA (ONT)12/05/201704:00 pm
    Ontario, CA (ONT)Chicago, IL (ORD)12/12/201701:20 pm
    flightnetwork.com check price
  • $304United Airlines flight United Airlines 
    FromToDepartureTime
    Chicago, IL (ORD)Ontario, CA (ONT)12/05/201704:00 pm
    Ontario, CA (ONT)Chicago, IL (ORD)12/12/201701:20 pm
    flyfar.ca check price
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