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

You can find one-way and return flights from RDU to DEN with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when RDU to DEN ticket fares go up or down.

The cheapest months to fly from RDU to DEN are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

There are 3 airlines offering direct flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN). Here are the top carriers:
* United operates 16 direct flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN) every week.
* Southwest Airlines operates 14 direct flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN) every week.
* Frontier Airlines operates 7 direct flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN) every week.

Frontier Airlines is one of the cheapest airlines offering nonstop return flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN), with tickets starting from around AU$92 for flights that can be booked for departure within the next year. For connecting flights, Sun Country Airlines is one of the cheapest, with return tickets starting from around AU$285. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Denver, CO (DEN-Denver Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Raleigh, NC (RDU-Raleigh - Durham Intl.) to Denver, CO (DEN-Denver Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

You'll find approximately 5 nonstop flights per day from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN). For even more choices, look at flights that include layovers, as there are around 153 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Nashville Intl. (BNA).

The earliest flight from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN) typically departs around 5:00 AM local time. This service is operated by American Airlines and is seasonal, active in May, June, July, and August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll find the most flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN) on a Thursday, with around 95 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, Delta, and American Airlines. Flight schedules are quite consistent throughout the week, so you'll have a good selection of flights no matter which day you choose.

The most popular departure times for flights from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN) are in the early morning, from 6am to 9am. Many major carriers, including United, Southwest Airlines and American Airlines, offer flights during this window. Many travellers prefer these times as it allows for an early start to their day in Denver.

When flying from Raleigh - Durham Intl. (RDU) to Denver Intl. (DEN), you'll find that a nonstop flight typically takes around 4 hours. This route covers a distance of approximately 2,306 kilometers. If you opt for a flight with one stop, your travel time will be longer, usually around 6 hours 18 minutes. Flights with two or more stops will take even longer, typically around 9 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.

You can fly business class or first class between RDU and DEN. You can fly business class with Frontier Airlines and Delta.

First class cabins are available on:

• Alaska Airlines
• United
• Delta
• American Airlines

It's easy to earn miles on a Raleigh, NC (RDU) to Denver, CO (DEN) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Denver from Raleigh - Durham Intl. (RDU), you can fly directly into Denver Intl. (DEN). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Nashville Intl. (BNA), or Baltimore Washington Intl. Thurgood Marshall (BWI) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Raleigh, NC (RDU) to Denver, CO (DEN) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Raleigh, NC (RDU) to Denver, CO (DEN) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Raleigh, NC (RDU-Raleigh - Durham Intl.) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.