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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, Apr 8th 2026
From
$170
Frontier Airlines
F9 1483 (1 Transfer)
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Fly on Thu, May 7th 2026
From
$185
Frontier Airlines
F9 3135 (1 Transfer)
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Fly on Sat, Mar 21st 2026
From
$280
Frontier Airlines
F9 3647 (1 Transfer)
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Fly on Mon, Jun 8th 2026
From
$351
Frontier Airlines
F9 3241 (1 Transfer)
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Fly on Thu, Aug 13th 2026
From
$401
United Airlines
UA 390 (Direct)
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Fly on Tue, Jul 28th 2026
From
$490
Alaska Airlines
AS 715 (1 Transfer)
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