Fly from RDU to DEN: Your Comprehensive Guide to Raleigh to Denver Airfare
Cheapest flight found
$108
Last updated Mar 13, 2026
Prices by Month
Price History
Tracking the May 7, 2026 departure — the cheapest date we found.
Price Behavior: RDU → DEN
Based on 6 months of fare data collected by Trip Manta.
Lowest Fare
$108
Highest Fare
$299
Median Fare
$190
Price Spread
$191
Prices vary significantly — hourly tracking is especially valuable here.
Cheapest month to fly: May 2026 (from $108)
Most expensive month: July 2026 (from $299)
Biggest price drop caught: $107 between consecutive checks
Most frequent cheapest airline: Frontier
What This Means for You
Flights from Raleigh to Denver range from $108 to $299, a $191 spread across the months we track. If your dates are flexible, May 2026 tends to have the lowest fares. Because prices on this route change significantly, setting up hourly price alerts gives you the best chance of catching a short-lived drop before it corrects. We have caught drops as large as $107 between hourly checks on this route.
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From
Raleigh (RDU)
To
Denver (DEN)
Airport Information
Raleigh (RDU)
Raleigh-Durham International Airport (RDU) serves as the primary gateway for the Research Triangle region, offering a modern and stress-free travel experience. Located midway between Raleigh and Durham, the airport features two main terminals with a wide variety of local dining options, including the famous 42nd St. Oyster Bar. RDU is known for its efficient security checkpoints and easy-to-navigate layout, consistently ranking high for passenger satisfaction in the Southeast.
Denver (DEN)
Denver International Airport (DEN) is world-renowned not only for its iconic tent-like roof structure mimicking the snow-capped Rockies but also for being one of the largest airports by land area in the United States. Located about 25 miles northeast of downtown, DEN serves as a major hub for United and Southwest Airlines. The airport offers extensive amenities, including an outdoor plaza, diverse art installations, and a wide array of Colorado-centric craft breweries for travelers to enjoy.
Frequently Asked Questions
How long is the typical flight from RDU to DEN?
A non-stop flight from Raleigh to Denver typically takes about 3 hours and 45 minutes to 4 hours, depending on wind speeds and weather conditions.
Which airlines offer non-stop flights between Raleigh and Denver?
Southwest Airlines, United Airlines, and Frontier Airlines currently provide direct, non-stop service on this specific route.
Is there a time difference between Raleigh and Denver?
Yes, Denver is in the Mountain Time Zone, which is two hours behind Raleigh's Eastern Time Zone.
What is the best way to get from Denver Airport to downtown?
The RTD A-Line train is the most popular choice, costing approximately $10.50 for a one-way trip directly to Union Station.
How early should I arrive at RDU for my flight to Denver?
It is generally recommended to arrive at least 2 hours before your scheduled departure to account for parking, baggage drop-off, and TSA security screening.
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Our Methodology
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