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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 Wed, Aug 6th 2025
From
$318
Alaska Airlines
AS 683 (1 Transfer)
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Fly on Fri, Sep 12th 2025
From
$318
Frontier Airlines
F9 3135 (1 Transfer)
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Fly on Sat, Jun 28th 2025
From
$341
Frontier Airlines
F9 2209 (1 Transfer)
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Fly on Tue, Jul 1st 2025
From
$390
Southwest Airlines
WN 4155 (1 Transfer)
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