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Flights From Major Airports
From Chicago
Current:
Chicago to Ontario
Chicago ✈ Ontario
Cheapest airfares from Chicago to Ontario
Search for flight deals to Ontario
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All prices in AUD, prices may fluctuate slightly from the advertised price.
Fly on Thu, Oct 16th 2025
From
$210
Alaska Airlines
AS 891 (1 Transfer)
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Fly on Mon, Jul 7th 2025
From
$217
Spirit Airlines
NK 2620 (1 Transfer)
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Fly on Sat, Nov 1st 2025
From
$219
Hawaiian Airlines
HA 6295 (1 Transfer)
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Fly on Sat, May 24th 2025
From
$239
Frontier Airlines
F9 2209 (1 Transfer)
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Fly on Mon, Aug 25th 2025
From
$262
United Airlines
UA 1748 (Direct)
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