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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 Fri, Oct 24th 2025
From $211

Frontier Airlines
F9 3281 (1 Transfer)
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Fly on Tue, Nov 18th 2025
From $287

Southwest Airlines
WN 872 (Direct)
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Fly on Sun, Mar 1st 2026
From $465

Southwest Airlines
WN 4680 (Direct)
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