$82 Cheap Flights from Raleigh (RDU) to Denver (DEN)

View $82 flight on Fri, Sep 26, 2025Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to Denver Intl. Airport (DEN)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Today's featured flight deals from Raleigh-Durham International Airport (RDU) to Denver Intl. Airport (DEN)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Raleigh to Denver (RDU-DEN)

Prices were available within the past 7 days and start at $82 for one-way flights and $155 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Sep 14 - Fri, Sep 19
RDU
Raleigh
DEN
Denver
$155 Roundtrip, found 2 hours ago
$155
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sun, Sep 14 from Raleigh to Denver, returning Fri, Sep 19, priced at $155 found 2 hours ago
Frontier Airlines
Thu, Nov 6 - Sun, Nov 9
RDU
Raleigh
DEN
Denver
$174 Roundtrip, just found
$174
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 6 from Raleigh to Denver, returning Sun, Nov 9, priced at $174 just found
Frontier Airlines
Sun, Sep 14 - Fri, Sep 26
RDU
Raleigh
DEN
Denver
$177 Roundtrip, found 4 days ago
$177
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, Sep 14 from Raleigh to Denver, returning Fri, Sep 26, priced at $177 found 4 days ago
Frontier Airlines
Thu, Nov 6 - Thu, Nov 13
RDU
Raleigh
DEN
Denver
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Nov 6 from Raleigh to Denver, returning Thu, Nov 13, priced at $179 found 1 day ago
Frontier Airlines
Mon, Sep 22 - Fri, Sep 26
RDU
Raleigh
DEN
Denver
$184 Roundtrip, found 1 hour ago
$184
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Sep 22 from Raleigh to Denver, returning Fri, Sep 26, priced at $184 found 1 hour ago
Frontier Airlines
Sun, Aug 31 - Fri, Sep 5
RDU
Raleigh
DEN
Denver
$190 Roundtrip, found 4 hours ago
$190
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sun, Aug 31 from Raleigh to Denver, returning Fri, Sep 5, priced at $190 found 4 hours ago
Southwest Airlines
Sat, Dec 6 - Fri, Dec 12
RDU
Raleigh
DEN
Denver
$197 Roundtrip, found 6 hours ago
$197
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Sat, Dec 6 from Raleigh to Denver, returning Fri, Dec 12, priced at $197 found 6 hours ago
United
Sat, Dec 6 - Fri, Dec 12
RDU
Raleigh
DEN
Denver
$197 Roundtrip, found 6 hours ago
$197
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Dec 6 from Raleigh to Denver, returning Fri, Dec 12, priced at $197 found 6 hours ago
Delta
Fri, Dec 5 - Sat, Dec 13
RDU
Raleigh
DEN
Denver
$207 Roundtrip, found 23 hours ago
$207
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Dec 5 from Raleigh to Denver, returning Sat, Dec 13, priced at $207 found 23 hours ago
American Airlines
Sat, Dec 6 - Fri, Dec 12
RDU
Raleigh
DEN
Denver
$217 Roundtrip, found 6 hours ago
$217
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Sat, Dec 6 from Raleigh to Denver, returning Fri, Dec 12, priced at $217 found 6 hours ago

Find the cheapest month to fly from Raleigh (RDU) to Denver (DEN)

October is typically the cheapest month to fly

From $98 - $217 per traveler.

Graph displaying average flight prices per month

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $284
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $284
Flights from Raleigh (RDU) to Denver (DEN)
Origin airport
Raleigh - Durham Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$155
Distance
1433 mi
Average flight time
2 hours 58 mins

Raleigh to Denver Flights

The cheapest times to fly from Raleigh to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Raleigh to Denver are during the month of September. You can find some of the cheapest flights from Raleigh to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Raleigh to Denver

Sunday is one of the best days to book for cheap flights from Raleigh to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Raleigh to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Raleigh to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $82 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Raleigh to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Raleigh to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN) cost?
Snag cheap return flights starting from $138 from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving RDU on August 16 2025 and touching down at DEN. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from RDU to DEN?
The cheapest flights from RDU to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
Avoid the layovers and travel nonstop to Denver Intl. Airport (DEN) from Raleigh - Durham Intl. Airport (RDU) with 3 carriers, including:

  • United Airlines
  • Southwest Airlines
  • Frontier Airlines

What is the cheapest airline that flies from RDU to DEN?
At the moment, the cheapest airline offering one-way flights from RDU to DEN is Frontier Airlines. You can take off on this route from $78. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from RDU on September 25 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
Daily, an average of 4 direct flights take off from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN). Choose the departure time that best fits your schedule.
What are the most popular departure times for flights from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
Flights between RDU and DEN tend to be busiest at 4 PM. For a more relaxed experience and potentially cheaper tickets, look for a time outside the usual busy windows.
What day of the week has the most flights from RDU to DEN?
Fly on a Thursday if you're searching for the best choice of flights from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN).
What is the earliest flight from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
The first flight of the day jetting off from Raleigh - Durham Intl. Airport (RDU) is at around 5:35AM UTC-5. Hop on this flight and you'll reach Denver Intl. Airport (DEN) at approximately 7:40AM UTC-7. The entire trip takes 4h 5m.
How long does it take to fly from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
It takes roughly 4 hours and 8 minutes to travel the 1,450 mi from RDU to DEN.
What airline has the least delays from RDU to DEN?
United Airlines has the best performance for on-time direct flights from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN), with an on-time score of 84%. Use the Expedia App to check your flight schedule before you take off and receive notifications about any changes.
What is the best time to fly from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
To avoid potential delays on the Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN) route, fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Raleigh - Durham Intl. Airport (RDU)?
Denver Intl. Airport (DEN) is the only airport in Denver with direct flights from Raleigh - Durham Intl. Airport (RDU). Browse the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN) last-minute?
Waiting until just before your departure to book a flight from RDU to DEN often results in higher prices. While you might find some last-minute deals, there's no guarantee. Be flexible with your itinerary for the best chance of snagging a bargain.
Is it cheaper to book a RDU to DEN flight and hotel package?
You'll generally save money by securing a RDU to DEN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your ideal accommodations and flights, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to Denver Intl. Airport (DEN)?
Usually, it's possible to reschedule or cancel your RDU to DEN flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.