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

You can discover cheap return Frontier Airlines flights from $128 from DEN to ORD by organizing your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $64 for a one-way journey.**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.

Frontier Airlines flights to Chicago are usually cheaper in the off-peak months of January and February. Whether you’re in search of a return or one-way ticket, you could land a better deal then.

Look for affordable Frontier Airlines flights from Denver Intl. Airport (DEN) to O’Hare Intl. Airport (ORD) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the ideal day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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 operates direct flights from Denver Intl. Airport (DEN) to O’Hare Intl. Airport (ORD), with 4 weekly departures. Simply select the “Nonstop” and “Airline” filters while searching on Expedia to see all direct Frontier Airlines flights to ORD.

It takes around 2h 34m to fly nonstop from Denver Intl. Airport (DEN) to O’Hare Intl. Airport (ORD) with Frontier Airlines.

The earliest Frontier Airlines flight from DEN to ORD takes off at 10:26AM UTC-7, arriving at 2:02PM UTC-6. If you prefer to head off later, the last Frontier Airlines flight leaves DEN at 8:59PM UTC-7 and touches down at ORD at 12:32AM UTC-6. Flying before noon is generally a smart choice as morning flights are less likely to be canceled.**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.

Most Frontier Airlines flights from Denver Intl. Airport (DEN) to Chicago land at O’Hare Intl. Airport (ORD). This is the airline’s main entry point to the city. It’s also worth exploring Expedia for flights to nearby airports like Midway Intl. Airport (MDW), as fares may be cheaper.

Offering a rewarding loyalty program, Frontier Airlines is a popular choice for many passengers flying from DEN to ORD. Plus, if you’re a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely board an Airbus A320neo or an Airbus A321 when flying Frontier Airlines from Denver Intl. Airport (DEN) to O’Hare Intl. Airport (ORD). However, keep in mind that a different plane may be used due to operational reasons.

You can usually cancel or change your flight, although additional charges may apply if you booked over 24 hours ago. Need flexible options? Use Expedia’s “No cancel fee” and “Changes included” filters to find flights that won’t charge you extra if you need to revise your plans. To make modifications, go to “Trips,” select your flight and click on “Manage Booking” for more details.