ORD
Chicago
ONT
Ontario
Chicago → Ontario
Frontier Airlines · Round Trip · Nonstop
Save $36 (21% off)
Compared to the typical price of $172
$136$172
per person · round trip
Flight Details
Cabin
Economy
Departs
Apr 25, 2026
Returns
Apr 29, 2026
Price History
Avg: $134
Low: $132
High: $136
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