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$95+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Find cheap flights from Raleigh to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Raleigh-Durham to Denver Intl are usually found in September or January, booked 62 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap 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 December 12, 2025.

This Frontier deal was found by Cheapflights users on 12/11. 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.
Tue 12/238:14 pmRDU - DEN
1 stop14h 10mFrontier
Sat 1/106:33 pmDEN - RDU
1 stop11h 20mFrontier
Deal found 12/11$191
This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:14 pmRDU - DEN
1 stop28h 50mFrontier
Fri 1/91:21 pmDEN - RDU
Nonstop3h 20mFrontier
Deal found 12/11$217
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/258:14 pmRDU - DEN
1 stop28h 50mFrontier
Sat 1/106:33 pmDEN - RDU
1 stop11h 20mFrontier
Deal found 12/11$224
This CheapOair deal was found by Cheapflights users on 12/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:50 pmRDU - DEN
1 stop14h 37mFrontier
Tue 12/1611:59 pmDEN - RDU
1 stop14h 45mFrontier
Deal found 12/9$234
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Tue 12/309:05 pmRDU - DEN
1 stop13h 51mFrontier
Tue 1/66:00 amDEN - RDU
1 stop16h 12mFrontier
Deal found 12/9$235
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Wed 12/2410:57 amRDU - DEN
1 stop7h 44mFrontier
Sat 1/106:43 pmDEN - RDU
2 stops11h 10mFrontier
Deal found 12/11$246
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:25 pmRDU - DEN
1 stop10h 43mFrontier
Mon 1/56:00 amDEN - RDU
1 stop11h 12mFrontier
Deal found 12/10$255
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:50 pmRDU - DEN
1 stop14h 37mFrontier
Thu 12/1811:59 pmDEN - RDU
1 stop13h 37mFrontier
Deal found 12/11$258
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:50 pmRDU - DEN
1 stop18h 42mFrontier
Sat 12/2011:59 pmDEN - RDU
1 stop14h 52mFrontier
Deal found 12/10$259
This Frontier deal was found by Cheapflights users on 12/11. 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 12/267:36 pmRDU - DEN
Nonstop4h 13mFrontier
Sat 1/106:33 pmDEN - RDU
1 stop11h 20mFrontier
Deal found 12/11$265

Find 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 December 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$135
(Kiwi.com)

One-way from

$95
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$344

Good round-trip deal

$253 or less

Good one-way deal

$160 or less
Provider with most accurate pricing for Raleigh-Durham-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Denver Intl flights.
Search Deals
From Raleigh-Durham to Denver Intl
Search Deals
One-way flight from Raleigh-Durham to Denver Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Raleigh-Durham to Denver Intl.
Search Deals
Price to beat on a one-way flight from Raleigh-Durham to Denver Intl.
Search Deals

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 December 12, 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

Fri 1/9

7:36 pm-9:49 pm

Nonstop4h 13m

Denver Intl

Fri 1/16

1:21 pm-6:44 pm

Nonstop3h 23m

$172

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Mon 12/15

7:50 pm-8:27 am

1 stop14h 37m

Denver Intl

Thu 12/18

11:59 pm-3:36 pm

1 stop13h 37m

$258

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 1/8

6:50 am-3:30 pm

2 stops10h 40m

Denver Intl

Mon 1/12

9:50 am-8:40 pm

2 stops8h 50m

$327

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Fri 2/6

7:04 pm-12:38 pm

1 stop19h 34m

Denver Intl

Tue 2/10

11:49 am-6:04 pm

2 stops28h 15m

$330

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 1/29

8:00 am-10:05 am

Nonstop4h 05m

Denver Intl

Sun 2/1

5:30 pm-10:40 pm

Nonstop3h 10m

$332

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Fri 3/6

6:51 pm-10:42 am

2 stops17h 51m

Denver Intl

Mon 3/9

7:52 pm-5:51 pm

1 stop19h 59m

$360

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Wed 1/7

8:03 am-10:13 am

Nonstop4h 10m

Denver Intl

Wed 1/14

11:17 am-6:52 pm

1 stop5h 35m

$367

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Wed 4/8

2:16 pm-11:04 pm

1 stop10h 48m

$97

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Sat 2/14

6:10 am-12:42 am

2 stops20h 32m

$103

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 2/5

6:14 pm-2:05 pm

2 stops21h 51m

$107

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 19 results
1
2

Compare providers for flights from Raleigh to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Raleigh to Denver in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Raleigh-Denver flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Raleigh-Denver flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Raleigh-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Raleigh-Denver flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Raleigh-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 5, 2025.

To ensure you get the cheapest price possible for a flight from Raleigh to Denver, you should look to book at least 62 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, January is the cheapest month in which you can book a flight from Raleigh to Denver (average of $91). Flying from Raleigh to Denver in July is currently the most expensive (average of $175). 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 December 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 39% on flights from Raleigh to Denver by exploring options for tickets in the evening.

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 December 6, 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.

The best insider tips for Raleigh to Denver flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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

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 December 12, 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
7.9
Good
4,253 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,084 reviews
Southwest
7.9
Good
4,253 reviews

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 6 airlines.

  • How popular is this Raleigh to Denver flight route?

    The Raleigh-Durham to Denver Intl flight path was viewed by 122 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 4h 13m. Your travel time will be generally consistent. The distance between Raleigh and Denver is about 1432 mi. Generally, flights for this route are nonstop.

  • 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 $97 on this airline. Additional options worth looking into are Delta and JetBlue, starting at $128 and $157 round-trip. Frontier is priced at 69% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Raleigh to Denver one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $62. American Airlines flights start at $108 while deals on Southwest start at $108 one-way.

  • 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 (91%), Frontier (81%) or Southwest (67%) 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 $1,022 for a flight from Raleigh to Denver. The cheapest flight overall is $86 while the most popular route, (Raleigh-Durham - Denver Intl) is currently priced at $98.

  • 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, January is the cheapest month in which you can book a flight from Raleigh to Denver (average of $91). Flying from Raleigh to Denver in July is currently the most expensive (average of $175). 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
Black Hawk
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

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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 6 airlines flying from Raleigh to Denver

Discover the top 6 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$106Average$248FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$316FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$157Average$386FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$202Average$420FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$207Average$312FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$211Average$362FlexibilityNo cancel feeOn-time63%

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