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$80+ Cheap flights from Raleigh (RDU) to Boulder, CO

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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — DEN
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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The best prices from Raleigh-Durham to Boulder are usually found in April or May, booked 84 days in advance, depart on a Saturday or Tuesday and return on a Friday

Cheap flight deals from Raleigh to Boulder

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) to Boulder (BD9). 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 November 21, 2024.

Popular in

December

Cheapest in

April

Round-trip from

$128
(Frontier)

One-way from

$80
(Frontier)
High demand for flights, 18% potential price rise
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Best time to find cheap flights, 21% potential price drop
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From Raleigh-Durham to Boulder
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One-way flight from Raleigh-Durham to Boulder
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Find flight deals from Raleigh to Boulder

Cheapest flights from Raleigh to Boulder
Explore the most affordable flight options available from Raleigh to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 11/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/165:20 pmRDU - DEN
Nonstop4h 21mFrontier
Tue 12/178:08 amDEN - RDU
Nonstop3h 16mFrontier
Deal found 11/20$131
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/103:07 pmRDU - DEN
1 stop6h 57mAmerican Airlines
Tue 1/76:30 amDEN - RDU
1 stop5h 30mAmerican Airlines
Deal found 11/19$217
This Delta deal was found by Cheapflights users on 11/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/115:45 amRDU - DEN
1 stop6h 00mDelta
Fri 12/1312:55 amDEN - RDU
1 stop7h 27mDelta
Deal found 11/21$236
This Southwest deal was found by Cheapflights users on 11/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/114:55 pmRDU - DEN
Nonstop3h 55mSouthwest
Wed 1/811:45 amDEN - RDU
Nonstop3h 15mSouthwest
Deal found 11/20$258
This United Airlines deal was found by Cheapflights users on 11/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/128:00 amRDU - DEN
Nonstop4h 08mUnited Airlines
Sat 12/145:45 pmDEN - RDU
Nonstop3h 17mUnited Airlines
Deal found 11/20$262
This JetBlue deal was found by Cheapflights users on 11/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/102:04 pmRDU - DEN
1 stop10h 12mJetBlue
Mon 1/612:50 amDEN - RDU
1 stop7h 34mJetBlue
Deal found 11/20$327
This Gotogate deal was found by Cheapflights users on 11/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2310:53 pmRDU - DEN
1 stop10h 57mMultiple Airlines
Wed 11/277:10 pmDEN - RDU
1 stop13h 27mMultiple Airlines
Deal found 11/20$328

Find flights from Raleigh to Boulder within your budget

Customize your flight search to find flights from Raleigh to Boulder 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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Mon 1/27

3:07 pm-8:39 pm

1 stop7h 32m

Denver Intl

Sun 2/9

7:15 am-8:08 pm

1 stop10h 53m

$128

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Wed 1/8

4:00 pm-6:09 pm

Nonstop4h 09m

Denver Intl

Sat 1/11

6:00 am-2:15 pm

1 stop6h 15m

$192

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Wed 1/8

11:34 am-5:47 pm

1 stop8h 13m

Denver Intl

Tue 1/14

12:59 am-10:46 am

1 stop7h 47m

$198

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Sat 2/1

5:40 am-10:05 am

1 stop6h 25m

Denver Intl

Wed 2/5

3:35 pm-11:58 pm

1 stop6h 23m

$236

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Fri 1/3

5:14 pm-11:36 pm

1 stop8h 22m

Denver Intl

Mon 1/6

11:16 pm-12:10 pm

1 stop10h 54m

$244

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Wed 12/11

4:55 pm-6:50 pm

Nonstop3h 55m

Denver Intl

Wed 1/8

11:45 am-5:00 pm

Nonstop3h 15m

$258

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Mon 12/23

9:59 pm-7:04 am

1 stop11h 05m

$80

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Sat 1/11

4:00 pm-6:09 pm

Nonstop4h 09m

$89

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Sat 1/11

6:27 am-11:45 am

1 stop7h 18m

$99

RaleighDenver

RDU - DEN

RDUDEN

Raleigh-Durham

Thu 2/20

6:59 pm-10:51 pm

1 stop5h 52m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 15 results
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Best time to book a flight from Raleigh to Boulder

Have a flexible travel schedule? Discover the best time to fly to Boulder 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.

Travel insights for flights from Raleigh to Boulder

Get recent, data-driven insights about flights from Raleigh to Boulder including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Boulder. Price data was last updated on November 15, 2024.

To ensure you get the cheapest price possible for a flight from Raleigh to Boulder, you should look to book at least 84 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 Boulder?

Currently, October is the cheapest month in which you can book a flight from Raleigh to Boulder (average of $197). Flying from Raleigh to Boulder in March is currently the most expensive (average of $270). 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 BD9?

Find hourly flight availability from Raleigh to Boulder. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Raleigh to Boulder as you normally would.

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

Use this chart to determine the cheapest time to fly round-trip from Raleigh to Boulder. Price data was last updated on June 30, 2024.

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

Weekly flight availability from Raleigh to Boulder

Explore weekly flight availability from Raleigh to Boulder. 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 November 21, 2024.

The most flights from RDU to BD9 are scheduled on a Thursday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Boulder by month

Plan your trip to Boulder by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boulder ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Boulder when rainfall is around 0.5 in.

Temperature in Boulder by month

Plan your trip to Boulder by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boulder, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Boulder

Get insights into the airlines that provide service to Boulder. 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 Boulder. Reviews last updated November 21, 2024.
See what other customers who have flown with Frontier, United Airlines and American Airlines from Raleigh to Boulder have to say. 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
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,759 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,395 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Boarding

8.2

Overall

8.1

Food

7.2

Comfort

8.1

Entertainment

7.7

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

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

  • What airport do you fly from for flights from Raleigh to Boulder?

    Located just 11.1 mi from the city center, Raleigh-Durham is the airport most travelers will use when flying to Boulder from Raleigh. Booking flights from Raleigh-Durham (RDU) to Boulder should be relatively easy as there are 3 daily outbound flights to Boulder from 6 different airlines.

  • How popular is this Raleigh to Boulder flight route?

    Flights from Raleigh-Durham to Boulder have been viewed 168 times in the past calendar month.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $80. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Raleigh to Boulder for a low price.

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

    The top 3 most reliable airlines when flying from Raleigh to Boulder are United Airlines (86%), Frontier (81%) and Southwest (80%).

  • What are the cheapest flights from Raleigh to Boulder?

    The cheapest flight price from Raleigh to Boulder is $64. On average you can expect to pay $891. The most popular route, (Raleigh-Durham - Denver Intl), can usually be booked for $138.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Raleigh to Boulder 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 Boulder?

    Currently, October is the cheapest month in which you can book a flight from Raleigh to Boulder (average of $197). Flying from Raleigh to Boulder in March is currently the most expensive (average of $270). 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.

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Top 6 airlines flying from Raleigh to Boulder

Discover the top 6 airlines that operate flights from Raleigh to Boulder. 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$70Average$269FlexibilityNo cancel feeOn-time83%
FrontierCheapest$81Average$227FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$178Average$393FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$187Average$437FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$198Average$371FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$359FlexibilityNo cancel feeOn-timeN/A
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