Open interactive map →Cheap flights from Chicago to Denver
From Chicago, reaching Denver in United States currently costs from €82. Fares are available from several carriers, with prices shifting week to week. Non-stop flights are available, which saves time compared to connecting itineraries. The flight typically takes around 2h 11min. Prices follow seasonal patterns - the calendar below shows where the dips and peaks fall across the next 12 months, so you can book at the right moment.
Price patterns on the Chicago to Denver route tend to spike during school holidays and public holiday weekends. Booking 4-6 weeks out generally balances availability and price well on this route. If your travel dates are flexible, check the price calendar for the lowest-priced months before searching for specific flights.
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Cheapest month to fly
- October 2026€82DirectCheapest
Based on tracked fares, October is the cheapest month to fly this route at around €82.
Prices last updated: September 2026
October in Denver
Avg 11°C~5 rainy days
Historical averages from Open-Meteo. Shown for the cheapest travel month.
Entry requirements for United States
EU passportESTA required (visa-waiver)
US passportN/A (domestic)
Requirements vary by nationality and change without notice. Check requirements for your nationality →
About Denver
Denver is the gateway to the Rocky Mountains, with world-class skiing at Breckenridge, Vail, and Aspen within 2 hours by road and the Rocky Mountain National Park an hour and a half to the northwest. Denver International Airport (DEN) is a major United hub with some direct European routes.
Alternative routes
Other ways to reach Denver
Frequently asked questions
How much does a flight from Chicago to Denver cost?
The cheapest fare currently available from Chicago to Denver is €82. Prices on this route vary by season, day of week, and how far in advance you book. The month-by-month price calendar on this page shows exactly when fares are highest and lowest, so you can pick the most cost-effective window before searching for specific dates. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from Chicago to Denver?
Yes - non-stop flights are currently available from Chicago to Denver. The cheapest direct fare starts at €82, making it a convenient option if you want to avoid layover time. Direct flights are generally quicker and less stressful, especially for shorter trips to United States. Click through to the booking site to check live availability and schedules for your dates.
When is the cheapest time to fly from Chicago to Denver?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from Chicago. The month-by-month price calendar above is the fastest way to identify the cheapest window - look for the months with the lowest fares before committing to travel dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.