Flights from Chicago to Denver
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From $194 · Prices update daily
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The quick answer
Flights from Chicago to Denver start around $194 round-trip. Airlines on this route include: Frontier Airlines, United Airlines (direct flights available). Cheapest month: August; peak: July (about +44%).
Price calendar — next 60 days
★ Cheapest: $194 on Sun, Aug 23 · Direct · F9
Lowest return fares · Prices update daily · Final price confirmed at booking
Price calendar — Chicago to Denver
Month-by-month lowest fares. Green = cheapest dates.
United States essentials
🇺🇸 Domestic flight — no passport required
Domestic flight — no passport required for US citizens. Bring REAL ID for security.
Full Denver visa guide →🆘 Emergency
911
💱 Currency
US Dollar ($)
🕐 Time zone
UTC−5 to −10
🗣️ Language
English
🔌 Plugs
Type A/B · 120V
🚗 Driving
Right side
💡 Tipping
Expected — 15–20% at restaurants
📞 Dial code
+1
Entry rules can change — always confirm with official sources before booking.
Stay connected in Denver
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your Chicago to Denver trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in Denver
Pre-book your ride into Denver. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your Chicago to Denver flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
Chicago to Denver — frequently asked
How much is a flight from Chicago to Denver?+
Fares start around $194 round-trip, ranging up to about $340 in peak periods. Prices update daily across 800+ airlines.
What is the cheapest month to fly Chicago to Denver?+
August typically has the lowest fares, while July is the most expensive (around +44%).
Are there direct flights from Chicago to Denver?+
Yes — direct flights are available on this route. Connecting itineraries are often cheaper.
Which airlines fly from Chicago to Denver?+
Carriers on this route include Frontier Airlines, United Airlines. Compare them side by side in the search above.
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