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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 Tue, Jan 13th 2026
From $182

Frontier Airlines
F9 3173 (1 Transfer)
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Fly on Sat, Dec 13th 2025
From $926

Southwest Airlines
WN 872 (Direct)
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