$64 Cheap Frontier Airlines flights Chicago (ORD) to Denver (DEN)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap Frontier Airlines return flights from $128 from ORD to DEN. Affordable one-way tickets from $64 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to jet off to Denver with Frontier Airlines. You could also find excellent prices on one-way and round-trip tickets in November.

For cheap Frontier Airlines fares from O’Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact how much you pay. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Frontier Airlines offers direct flights from O’Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN), with 4 weekly departures. Just choose the “Nonstop” and “Airline” filters during your search on Expedia to find all direct Frontier Airlines flights to DEN.

From wheels-up to touchdown, a nonstop Frontier Airlines flight from O’Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN) takes approximately 2h 50m.

The first flight from ORD to DEN with Frontier Airlines leaves at 7:25AM UTC-6. You’ll land at 9:15AM UTC-7. The last Frontier Airlines flight of the day takes off at 7:50AM UTC-6 and arrives at 9:40AM UTC-7. With approximately 20% fewer cancellations for early and mid-morning flights, heading out early is generally the wisest option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Frontier Airlines flights from O’Hare Intl. Airport (ORD) to Denver land at Denver Intl. Airport (DEN). This is the main entry point to this city.

A rewarding loyalty program and the opportunity to collect points through Frontier Miles are the start of the reasons to jet off from ORD to DEN with Frontier Airlines. Plus, when you join our One Key™ program, you can earn OneKeyCash™* on top of Frontier Airlines’s loyalty program earnings. It’s yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the O’Hare Intl. Airport (ORD) to Denver Intl. Airport (DEN) route, Frontier Airlines typically flies Airbus A320neo and Airbus A321 planes. Don’t forget that last-minute changes are possible for operational purposes, so your flight may be on a different aircraft.

It’s generally possible to modify or cancel your flight, although additional fees may apply if your booking was made more than 24 hours ago. Need flexible options? Use our “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you have to alter your plans. To update your booking, go to “Trips,” select your flight and click on “Manage Booking” for further information.