Cheap flights from Chicago to United States
Travel > North America > United States
Travel tip: Visit Boston on your holidays!Check our current prices for flights from Chicago to United States. Please note that we also give you historical search data for this city connection. These are all airfares that people found in the past, in order to find more current flight information from Chicago to United States, you will need to run a search below.
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Cheap Denver airfares from $116/RT are provided by Cheapoair.com. Outbound flight is leaving on 07/09/2025, 05:35 am from Chicago O`hare (ORD) airport and arrives at Denver International Airport (DEN) at 07:27 am. The flight time is 1 hours and 52 minutes. The Returning flight departes on 07/15/2025, 08:30 pm (other return dates are also available). Date posted: 14 Feb 2025
Price evolution for flights From Chicago To United States

Recent Deals on Flights from Chicago to United States:Roundtrip / Oneway
- $116
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Chicago, IL (ORD) Denver, CO (DEN) 07/09/2025 05:35 am Denver, CO (DEN) Chicago, IL (ORD) 07/15/2025 08:30 pm - $136
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Chicago, IL (MDW) Denver, CO (DEN) 07/09/2025 06:15 am Denver, CO (DEN) Chicago, IL (MDW) 07/15/2025 08:30 pm - $226
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Chicago, IL (ORD) Denver, CO (DEN) 07/09/2025 05:35 am Denver, CO (DEN) Chicago, IL (ORD) 07/15/2025 04:55 pm - $246
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Chicago, IL (MDW) Denver, CO (DEN) 07/09/2025 06:15 am Denver, CO (DEN) Chicago, IL (MDW) 07/15/2025 04:55 pm - $430
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Chicago, IL (ORD) Cleveland, OH (CLE) 05/20/2025 04:15 pm Cleveland, OH (CLE) Chicago, IL (ORD) 06/04/2025 10:00 pm - $67
Spirit Airlines
cheapoair.com check priceFrom To Departure Time Chicago, IL (ORD) Fort Lauderdale, FL (FLL) 05/20/2025 06:15 am
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Know what to do when flying to United States?
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