Cheap Flights from Raleigh / Durham to Denver International

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Compare Raleigh / Durham to Denver International flight deals

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Flight deals from Raleigh / Durham to Denver International

Looking for a cheap last-minute deal or the best return flight from Raleigh / Durham Airport to Denver International Airport? If you want to travel next month, return fares start from $217. Find the lowest prices on one-way and return tickets right here.

Denver.$215 per passenger.Departing Wed, 30 Sep, returning Sat, 3 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Raleigh / Durham on Wed, 30 Sep, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 3 Oct, arriving in Raleigh / Durham.Price includes taxes and charges.From $215, select.

Denver.$217 per passenger.Departing Wed, 9 Sep, returning Sat, 12 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Raleigh / Durham on Wed, 9 Sep, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 12 Sep, arriving in Raleigh / Durham.Price includes taxes and charges.From $217, select.

Denver.$232 per passenger.Departing Mon, 5 Oct, returning Wed, 14 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Raleigh / Durham on Mon, 5 Oct, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 14 Oct, arriving in Raleigh / Durham.Price includes taxes and charges.From $232, select.

Denver.$249 per passenger.Departing Fri, 6 Nov, returning Sat, 7 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Raleigh / Durham on Fri, 6 Nov, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 7 Nov, arriving in Raleigh / Durham.Price includes taxes and charges.From $249, select.

Denver.$251 per passenger.Departing Thu, 29 Oct, returning Mon, 2 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Raleigh / Durham on Thu, 29 Oct, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 2 Nov, arriving in Raleigh / Durham.Price includes taxes and charges.From $251, select.

Denver.$327 per passenger.Departing Mon, 7 Dec, returning Sat, 12 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Raleigh / Durham on Mon, 7 Dec, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 12 Dec, arriving in Raleigh / Durham.Price includes taxes and charges.From $327, select.

Denver.$399 per passenger.Departing Wed, 20 Jan, returning Tue, 26 Jan.Return flight with United.Outbound direct flight with United departs from Raleigh / Durham on Wed, 20 Jan, arriving in Denver International.Inbound direct flight with United departs from Denver International on Tue, 26 Jan, arriving in Raleigh / Durham.Price includes taxes and charges.From $399, select.

Denver.$402 per passenger.Departing Tue, 8 Dec, returning Tue, 15 Dec.Return flight with United.Outbound direct flight with United departs from Raleigh / Durham on Tue, 8 Dec, arriving in Denver International.Inbound direct flight with United departs from Denver International on Tue, 15 Dec, arriving in Raleigh / Durham.Price includes taxes and charges.From $402, select.

Denver.$418 per passenger.Departing Tue, 16 Feb, returning Tue, 2 Mar.Return flight with United.Outbound indirect flight with United, departs from Raleigh / Durham on Tue, 16 Feb, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Tue, 2 Mar, arriving in Raleigh / Durham.Price includes taxes and charges.From $418, select.

Denver.$436 per passenger.Departing Fri, 28 Aug, returning Wed, 14 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Raleigh / Durham on Fri, 28 Aug, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 14 Oct, arriving in Raleigh / Durham.Price includes taxes and charges.From $436, select.

Denver.$482 per passenger.Departing Wed, 26 Aug, returning Fri, 28 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Raleigh / Durham on Wed, 26 Aug, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 28 Aug, arriving in Raleigh / Durham.Price includes taxes and charges.From $482, select.

Denver.$502 per passenger.Departing Thu, 31 Dec, returning Thu, 7 Jan.Return flight with United.Outbound indirect flight with United, departs from Raleigh / Durham on Thu, 31 Dec, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Thu, 7 Jan, arriving in Raleigh / Durham.Price includes taxes and charges.From $502, select.

Denver.$553 per passenger.Departing Thu, 11 Feb, returning Tue, 16 Feb.Return flight with United.Outbound indirect flight with United, departs from Raleigh / Durham on Thu, 11 Feb, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Tue, 16 Feb, arriving in Raleigh / Durham.Price includes taxes and charges.From $553, select.

Denver.$604 per passenger.Departing Fri, 26 Feb, returning Tue, 2 Mar.Return flight with United.Outbound direct flight with United departs from Raleigh / Durham on Fri, 26 Feb, arriving in Denver International.Inbound direct flight with United departs from Denver International on Tue, 2 Mar, arriving in Raleigh / Durham.Price includes taxes and charges.From $604, select.

Denver.$631 per passenger.Departing Fri, 28 Aug, returning Thu, 3 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Raleigh / Durham on Fri, 28 Aug, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 3 Sep, arriving in Raleigh / Durham.Price includes taxes and charges.From $631, select.

Denver.$658 per passenger.Departing Wed, 3 Mar, returning Fri, 5 Mar.Return flight with United.Outbound indirect flight with United, departs from Raleigh / Durham on Wed, 3 Mar, arriving in Denver International.Inbound indirect flight with United, departs from Denver International on Fri, 5 Mar, arriving in Raleigh / Durham.Price includes taxes and charges.From $658, select.

Find the cheapest month to fly from Raleigh / Durham to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Raleigh / Durham to Denver International flights are currently cheapest in September.

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Direct flights from Raleigh / Durham to Denver International

Raleigh / Durham to Denver International: Alternative routes

Compare routes from Raleigh / Durham to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Denver International

30km from central Denver

ClosestCheapest

from $215

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Durham to Denver: Flight information

The things to know before you go.

Cheapest flight found	$215
Cheapest month to fly	September
Average flight time	3 hrs, 57 mins
Most popular airline	Southwest Airlines
Average flights per week	31

Finding cheap flights from Raleigh / Durham to Denver International: Frequently asked questions

How much are return flights from Raleigh / Durham to Denver International?

The best price we found for a return flight from Raleigh / Durham to Denver International is $215. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Raleigh / Durham to Denver International?

3 hours and 57 minutes is the average flight time from Raleigh / Durham to Denver International.

Which airlines fly direct from Raleigh / Durham to Denver International?

Southwest Airlines, United and Frontier Airlines fly direct from Raleigh / Durham to Denver International.

How many flights are there a week from Raleigh / Durham to Denver International?

As of August 2026, there are 31 flights per week flying from Raleigh / Durham to Denver International.

When is the cheapest time to fly from Raleigh / Durham to Denver International?

The cheapest month to fly from Raleigh / Durham to Denver International is usually September.

Which upcoming date is cheapest to fly from Raleigh / Durham Airport to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Raleigh / Durham Airport to Denver International Airport on Wednesday, 30 September 2026.

Can I get a direct flight from Raleigh / Durham Airport to Denver International Airport?

Yes – the average flight time is 3 hours and 57 minutes.

How can I find the best flight deal to Denver International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Raleigh / Durham Airport to Denver International with?

Currently, Frontier Airlines offers the cheapest flight tickets to Denver International.

Travelling from Raleigh / Durham Airport (RDU) to Denver International Airport (DEN): what you need to know

Around 3 hours 55 minutes is how long you'll be travelling on a direct flight from Raleigh / Durham Airport to Denver International Airport.
Denver's timezone is UTC-7, making Denver two hours behind Durham.
Every week, there are 24 Raleigh / Durham Airport to Denver International Airport flights. If you want to get going as early as possible, pick the 05:05 Southwest Airlines flight. If you're eager to make the most of your time before flying, the latest flight is at 19:55 with Southwest Airlines.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Get to the airport on time to board your RDU to DEN flight.
During popular months like July, it's best to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead of an international flight when you travel during a high season in general.
A variety of airlines operate direct flights from Raleigh / Durham Airport to Denver International Airport, so jetting off to Denver (and then seeing more of the United States!) is easy. The most popular carriers that fly nonstop include:
Most travellers choose to travel with United on this route.
With a reliable 90.14% of services arriving as scheduled, United is the most punctual carrier operating RDU to DEN flights.
We make it simple to book a flight with a stopover. To see your options for tickets from Raleigh / Durham Airport to Denver International Airport, uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to explore the city of your choice. Popular stopovers between RDU and DEN include:
- Atlanta Hartsfield-Jackson Airport
- Nashville Airport
- St Louis Airport

How to find the cheapest flights from Raleigh / Durham Airport (RDU) to Denver International Airport (DEN)

$99 is the best price for a one-way Raleigh / Durham Airport to Denver International Airport flight. Return flights start from $215. These prices can change based on availability.
It's usually smart to book early if you're hoping to get cheap tickets from RDU to DEN. That's because flight prices are based on demand, which tends to increase closer to the date of departure.
Schedule your trip for May. That's the cheapest month for flights from Raleigh / Durham Airport to Denver International Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the lowest price across each month.
You don't need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll send you an update as soon as the price changes on cheap flights from RDU to DEN.
Select your preferred departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Raleigh / Durham Airport to Denver International Airport.

Handy information about Raleigh / Durham Airport (RDU)

When it comes to the on-time performance of Raleigh / Durham Airport, 78% of flights stick to their scheduled arrival time.
To reach Raleigh / Durham Airport from central Durham, it takes around 20 minutes by car. Of course, this depends on traffic. It's approximately 18 kilometres from the airport to the city centre.
Expect a journey time of about 45 minutes on public transport.
Looking for a handy hotel close to RDU? If you've booked an early flight from Raleigh / Durham Airport to Denver International Airport, these accommodation options will have you moments from your departure lounge:

Arriving at Denver International Airport (DEN)

Once your Raleigh / Durham Airport to Denver International Airport flight has touched down, unwind and relax at a nearby hotel. Baymont by Wyndham Denver International Airport is a comfortable option that's not too far from DEN.
Explore without limits with a Denver International Airport rental car. Book your wheels from Routes Car Rentals, Dollar or Budget and find adventure across Denver and beyond.
Booking your ride from Denver International Airport about one week in advance gives you the best shot at securing a great deal.

When to fly to Denver International Airport (DEN)

July is the busiest month for flights from Raleigh / Durham Airport to Denver International Airport. To avoid the crowds, visit Denver in January.
The warmest month in Denver is July, with the temperature ranging between 14ºC and 32ºC. Lock in your flights from Raleigh / Durham Airport to Denver International Airport in this month if this is the type of weather you enjoy.
January sees average temperatures of between -9ºC and 7ºC. Search for cheap tickets from RDU to DEN sometime around then if you like travelling in cooler conditions.

Explore more of the United States

Denver is always a good idea, but there are so many other parts of the United States you should also see. Around 105 kilometres south of Denver, a trip to Colorado Springs will keep you busy. Start with popular sights like Garden of the Gods, Pikes Peak Region Attractions and Red Rock Canyon.
Around 13 kilometres east of Denver, Aurora is another essential stop in the United States. Experience the best of this destination with a visit to Plains Conservation Centre, DeLaney Homestead Historic District and Aircraft viewing.