Flights from Chicago to United States

Our cheapest offers for flights from Chicago to United States

Here you can compare cheap flights from Chicago (CHI) to United States for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to United States. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Chicago
Santa Ana, CA
Outbound
04/21/25
1 Stopover (DEN)
F93173, F94371
06h 55min
Return
05/19/25
1 Stopover (DEN)
F94372, F93174
09h 26min
Frontier Airlines
$148
Best option
Chicago
Santa Ana, CA
Outbound
06/18/25
direct
UA1842
04h 27min
Return
07/15/25
direct
UA2649
04h 21min
United Airlines ?
$318
Chicago
Santa Ana, CA
Outbound
04/21/25
1 Stopover (DEN)
F93173, F94371
06h 55min
Return
05/19/25
1 Stopover (DEN)
F94372, F93174
09h 26min
Frontier Airlines
$158
Prices based on recent searches, subject to last-minute changes
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