$144 Cheap Frontier Airlines flights Raleigh (RDU) to Denver (DEN)

Scoring cheap one-way Frontier Airlines flights from RDU to DEN from $144 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $143 for your next exciting adventure.**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.

Search for return or one-way flights to Denver in January or November. You could find an affordable fare with Frontier Airlines during these off-peak travel months.

To find cheap Frontier Airlines fares from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN), start searching one to three months before your planned departure. Securing 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 influence how much you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book 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.

Choose from one of Frontier Airlines’s 4 direct weekly flights from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN). To see what’s available, enter your dates, destination and origin and hit search. Then select the “Nonstop” and “Airline” filters.

Depart Raleigh - Durham Intl. Airport (RDU) for Denver Intl. Airport (DEN) on a direct Frontier Airlines flight, and you’ll be in the air for approximately 4h 12m.

The earliest flight from RDU to DEN with Frontier Airlines departs at 5:20PM UTC-5. You’ll land at 7:32PM UTC-7. The final Frontier Airlines flight of the day leaves at 8:36PM UTC-5 and arrives at 10:49PM UTC-7. With approximately 20% fewer cancellations for morning departures, setting off early is usually the smartest choice.**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 Raleigh - Durham Intl. Airport (RDU) to Denver land at Denver Intl. Airport (DEN). This is the main entry point to this city.

Offering a rewarding loyalty program, Frontier Airlines is a popular choice for many travelers journeying from RDU to DEN. Plus, as 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.

For the Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN) route, Frontier Airlines typically uses Airbus A320neo and Airbus A321neo planes. Remember that last-minute changes can occur for operational purposes, so your flight may be on a different aircraft.

Typically, you can reschedule or cancel your flight, although there may be additional charges if your booking was made over 24 hours ago. Prefer to keep your options open? Use Expedia’s “Changes included” and “No cancel fee” filters to find flights that won’t charge you extra if you have to adjust your plans. To update your booking, head to “Trips,” select your flight and click on “Manage Booking” for further information.