C$38 Cheap Flights from Raleigh / Durham to Denver

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Flight deals from Raleigh / Durham to Denver

Looking for a cheap last-minute deal or the best round-trip flight from Raleigh / Durham to Denver? Find the lowest prices on one-way and round-trip tickets right here.

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

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

Direct flights from Raleigh / Durham to Denver

Alternative Raleigh / Durham to Denver routes

Looking for the cheapest, fastest or easiest route from Raleigh / Durham to Denver? You could fly into the following airports instead.

Durham to Denver: Flight information

The things to know before you go.
Cheapest flight foundC$38
Cheapest month to flyApril
Average flight time3 hrs, 58 mins
Most popular airlineSouthwest Airlines
Average flights per week86

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

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.
The best price we found for a return flight from Raleigh / Durham to Denver is C$100. 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.
3 hours and 58 minutes is the average flight time from Raleigh / Durham to Denver.
Southwest Airlines, United and Frontier Airlines fly direct from Raleigh / Durham to Denver.
As of February 2026, there are 86 flights per week flying from Raleigh / Durham to Denver.
The cheapest month to fly from Raleigh / Durham to Denver is usually April.
If you're flying from Raleigh / Durham Airport, the cheapest airport near Denver is Denver International – which is 29.9 km away from the centre of Denver. We've found flights into this airport from C$100.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Raleigh / Durham Airport to Denver on Saturday, April 18, 2026.
Yes – the average flight time is 3 hours and 58 minutes.
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 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.
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.
In February, the average temperature is usually around 0°C. July is typically the warmest month in Denver, when it usually averages around 31°C. You can expect the least rain in January. The coldest month is December, with temperatures averaging -6°C. The rainiest month is July.
Currently, Frontier Airlines offers the cheapest flight tickets to Denver.

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

  • Expect to be in the air for 3 hours 22 minutes. On average, that's the duration of a direct flight from Raleigh-Durham International Airport to Denver.

  • Denver is 2 hours behind Durham, where Raleigh-Durham International Airport is located. Denver operates on the UTC-6 timezone.

  • With 37 weekly flights between the two airports, Raleigh-Durham International Airport (RDU) to Denver International Airport (DEN) is the busiest route. Southwest Airlines operates the earliest flight at 05:00. If you prefer to make the most of your day before taking off, the latest departure from RDU to DEN is with Southwest Airlines at 20:10.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to board your flight from RDU to Denver.

  • If you're flying during a popular month like July, head to the airport even earlier. It's wise to arrive up to four hours before international flights and two hours ahead of domestic departures. You can expect lines to be longer during vacation periods like Thanksgiving, Christmas and New Year.

  • You can catch a direct flight from Raleigh-Durham International Airport to Denver that arrives at Denver International Airport (DEN).

  • Top airlines that offer direct flights from Raleigh-Durham International Airport to Denver include:

  • For a domestic flight within United States, you won't need a visa or passport. However, you'll have to show another form of identification, like a driver's licence or ID card. Once you've booked flight tickets from Raleigh-Durham International Airport to Denver, make sure your ID is up to date.

  • RDU is around 23 kilometres from central Durham. If you're driving, catching a cab or ride-sharing from the centre, it'll take 18 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the trip time to be around 1 hour and 10 minutes.

  • Want a relaxed start to your journey? Stay near RDU. Whether you're boarding an early flight from Raleigh-Durham International Airport to Denver or want to avoid feeling rushed, these hotels are just the thing:

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

  • C$38 is the best price for a one-way ticket from Raleigh-Durham International Airport to Denver. Return flights start at C$100. These prices can change based on availability.

  • To secure cheap tickets from RDU to Denver, reserve your trip 9 months before the departure date.

  • Organize your trip for May. That's the cheapest month for tickets from Raleigh-Durham International Airport to Denver. If you have flexibility with your dates, use the 'Whole month' tool to see the lowest price across every month.

  • Sign into your online account or use the app to create a Price Alert. We'll notify you straight away if there's a cheaper deal on this route. It's simple to do, and it'll save you from checking for cheap tickets from RDU to Denver every day.

  • Make the most of the filters to find your ideal trip. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Raleigh-Durham International Airport to Denver, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and number of stops.

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) is around 40 kilometres from central Denver. With your own car rental or in a cab, the drive is around 34 minutes.

  • If you're using public transport, expect a journey time of around 1 hour and 31 minutes.

  • Get off your flight from Raleigh-Durham International Airport to Denver and be in your hotel bed shortly after. If you want a comfortable option that's not too far from DEN, make your way to SpringHill Suites Denver Airport.

Best time to go to Denver

  • July is the busiest month for flights from Raleigh-Durham International Airport to Denver. To steer clear of the crowds, travel to Denver in April when things are quieter.

  • Lock in your flight from Raleigh-Durham International Airport to Denver for July to experience the city during its warmest month. Expect temperatures to range from 14ºC to 32ºC.

  • If you like cooler conditions, lock in a cheap flight from RDU to Denver in January when temperatures average between -9ºC and 7ºC.

More about Denver

  • Start your Denver trip right by choosing the perfect place to stay. Once you've booked your flight from Raleigh-Durham International Airport to Denver, browse our range of hotels including:

  • There are so many things to discover in this city it can be tricky to work out where to start. Denver Art Museum, Union Station and Denver Botanic Gardens are top attractions which should be on any well-planned Denver itinerary.

Complete your Denver trip with a car rental

  • Choose one of our car rentals in Denver and explore the city at your own pace. Easily compare companies in one go to find the perfect ride once you've booked your hotel and cheap flights from Raleigh-Durham International Airport to Denver.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.