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$93+ Cheap flights from Raleigh to Denver (RDU - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — DEN
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Denver Intl are usually found in January or September, booked 63 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Raleigh to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 19, 2025.

Round-trip from

$157
(Priceline)

One-way from

$93
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$303

Good round-trip deal

$239 or less

Good one-way deal

$143 or less
From Raleigh-Durham to Denver Intl
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One-way flight from Raleigh-Durham to Denver Intl
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Raleigh-Durham to Denver Intl.
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Price to beat on a one-way flight from Raleigh-Durham to Denver Intl.
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Find flight deals from Raleigh to Denver

Cheapest flights from Raleigh to Denver
Explore the most affordable flight options available from Raleigh to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 19, 2025.

This Priceline deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:06 pmRDU - DEN
1 stop6h 47mFrontier
Sat 9/1312:04 amDEN - RDU
1 stop7h 49mFrontier
Deal found 8/18$157
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:06 pmRDU - DEN
1 stop6h 47mFrontier
Sat 9/207:47 pmDEN - RDU
1 stop12h 11mFrontier
Deal found 8/19$158
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:03 pmRDU - DEN
1 stop15h 06mFrontier
Fri 10/31:12 pmDEN - RDU
1 stop7h 46mFrontier
Deal found 8/18$159
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:43 amRDU - DEN
1 stop7h 59mFrontier
Sun 11/95:30 amDEN - RDU
1 stop6h 29mFrontier
Deal found 8/19$160
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:52 pmRDU - DEN
Nonstop3h 56mFrontier
Wed 10/17:48 pmDEN - RDU
1 stop13h 43mFrontier
Deal found 8/18$161
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:23 pmRDU - DEN
Nonstop3h 55mFrontier
Fri 10/312:04 amDEN - RDU
1 stop7h 49mFrontier
Deal found 8/17$162
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:06 pmRDU - DEN
1 stop6h 47mFrontier
Wed 10/811:45 pmDEN - RDU
1 stop6h 06mFrontier
Deal found 8/17$163
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/131:05 pmRDU - DEN
1 stop13h 46mFrontier
Fri 10/176:00 amDEN - RDU
1 stop9h 47mFrontier
Deal found 8/17$164
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2210:48 amRDU - DEN
1 stop24h 13mFrontier
Wed 10/15:45 pmDEN - RDU
1 stop25h 15mFrontier
Deal found 8/17$165
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:06 pmRDU - DEN
1 stop6h 47mFrontier
Tue 9/164:44 pmDEN - RDU
1 stop25h 53mFrontier
Deal found 8/17$166
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:27 pmRDU - DEN
1 stop20h 27mFrontier
Tue 10/211:40 pmDEN - RDU
1 stop23h 57mFrontier
Deal found 8/17$167
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:06 pmRDU - DEN
1 stop6h 47mFrontier
Thu 9/256:00 amDEN - RDU
1 stop6h 50mFrontier
Deal found 8/17$168

Cheapflights Fare Finder

 
Customize your flight search to find flights from Raleigh to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2025.
Use the filters below to find and compare flights from Raleigh to Denver that are best for you.

Fly from

Raleigh

Fly to

Denver

Route

Depart

Return

Price

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Mon 10/13

6:42 pm-7:36 am

1 stop14h 54m

Denver Intl

Tue 10/14

12:36 am-11:30 am

1 stop8h 54m

$157

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 9/11

10:48 am-7:20 am

1 stop22h 32m

Denver Intl

Sat 9/13

12:04 am-9:53 am

1 stop7h 49m

$157

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 9/25

9:02 pm-11:13 pm

1 stop28h 11m

Denver Intl

Mon 9/29

7:40 am-8:35 pm

1 stop10h 55m

$157

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 9/25

9:02 pm-11:13 pm

1 stop28h 11m

Denver Intl

Fri 10/3

7:40 am-8:30 pm

1 stop10h 50m

$157

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Fri 9/19

11:52 am-9:31 pm

1 stop11h 39m

Denver Intl

Sun 9/21

7:40 am-9:00 pm

1 stop11h 20m

$159

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Tue 10/28

6:10 am-1:45 pm

1 stop9h 35m

Denver Intl

Fri 10/31

11:18 am-8:52 pm

1 stop7h 34m

$159

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Fri 10/17

5:39 pm-7:44 pm

Nonstop4h 05m

Denver Intl

Sun 10/19

12:25 am-9:35 am

1 stop7h 10m

$159

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Fri 9/26

9:30 pm-8:49 am

1 stop13h 19m

Denver Intl

Thu 10/2

6:00 am-2:50 pm

1 stop6h 50m

$159

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Sat 9/27

7:03 pm-8:09 am

1 stop15h 06m

Denver Intl

Thu 10/2

1:12 pm-10:50 pm

1 stop7h 38m

$159

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 11/6

11:43 am-5:42 pm

1 stop7h 59m

Denver Intl

Sun 11/9

5:30 am-1:59 pm

1 stop6h 29m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 21 results
1
2
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The best insider tips for Raleigh to Denver flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Raleigh to Denver trip
Airlines
Frontier

Frontier's UpFront Plus offers a guaranteed empty middle seat for added comfort.


Early check-in can help secure your place onboard due to frequent overbooking.

Read more about Frontierby Marisa Garcia
United Airlines

United's Economy Plus offers extra legroom towards the front of the economy cabin.


United's MileagePlus allows pooling miles for family or friends' tickets.

Read more about United Airlinesby Harriet Baskas
Airports
RDU

RDU offers free Wi-Fi throughout the terminals. Connect to the 'RDU Free WiFi' network for seamless browsing before your flight.

Read more about RDUby John Walton
DEN

Take the A Line train from DEN to Union Station for a quick 37-minute ride into downtown Denver, running every 15 minutes.

Read more about DENby Emily Zemler
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
John Walton

John Walton

Expert on RDU

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Raleigh to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Raleigh with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Raleigh to Denver

How far ahead should I book a flight from Raleigh to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Denver. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Raleigh to Denver, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Raleigh to Denver?

Currently, October is the cheapest month in which you can book a flight from Raleigh to Denver (average of $197). Flying from Raleigh to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from RDU to DEN?

Find hourly flight availability from Raleigh to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 19, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 41% on flights from Raleigh to Denver by exploring options for tickets at noon.

What is the cheapest day to fly from Raleigh to Denver?

Use this chart to determine the cheapest time to fly round-trip from Raleigh to Denver. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their Raleigh to Denver flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Raleigh to Denver

Explore weekly flight availability from Raleigh to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 19, 2025.

The most flights from RDU to DEN are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated August 19, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Raleigh to Denver. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,922 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,211 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Raleigh to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Raleigh to Denver?

    If you book a flight from Raleigh to Denver, you will be flying from Raleigh-Durham to Denver Intl. Flights to Denver Intl (DEN) from Raleigh-Durham (RDU) take 3h 50m for a nonstop flight. There are 4 flights from Raleigh-Durham to Denver per day from 7 airlines.

  • How popular is this Raleigh to Denver flight route?

    The Raleigh-Durham to Denver Intl flight path was viewed by 121 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Raleigh to Denver?

    Frontier can get you from Raleigh to Denver in just under 14h 54m. Your travel time can differ by up to . The distance between Raleigh and Denver is about 1432 mi.

  • What are the cheapest airlines flying from Raleigh to Denver round-trip?

    Our cheapest airline available from Raleigh to Denver is Frontier. Our recent data shows that you can find tickets from as low as $102 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $138 and $196 round-trip. Frontier is priced at 67% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Raleigh to Denver?

    No one likes to see their flight delayed. When booking a flight from Raleigh to Denver consider choosing United Airlines (88%), Southwest (58%) or Frontier (49%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Raleigh to Denver?

    On average you can expect to pay $800 for a flight from Raleigh to Denver. The cheapest flight overall is $97 while the most popular route, (Raleigh-Durham - Denver Intl) is currently priced at $160.

  • Can I find deals for flights from Raleigh to Denver that include hotel bookings?

    Yes. In addition to deals on Raleigh to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Raleigh to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Raleigh to Denver.

  • Can I find deals for business class flights from Raleigh to Denver?

    Yes. Cheapflights offers flight deals from Raleigh to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Raleigh to Denver?

    Currently, October is the cheapest month in which you can book a flight from Raleigh to Denver (average of $197). Flying from Raleigh to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Black Hawk
Golden
Winter Park
Greeley
Lone Tree
Lakewood
Cripple Creek
Silverthorne
Thornton
Broomfield
Frisco
Manitou Springs
Grand Lake
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Brighton
Longmont

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Alternative routes for Raleigh to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Raleigh to Denver

Discover the top 7 airlines that operate flights from Raleigh to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$249FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$292FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$196Average$420FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$358FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$198Average$303FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$244Average$394FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$255Average$310FlexibilityNo cancel feeOn-time83%

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