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Chicago ✈ Ontario

Cheapest airfares from Chicago to Ontario

Search for flight deals to Ontario

*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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