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$89+ Cheap flights from Charlotte (CLT) 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
CLT — DEN
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Charlotte Douglas to Boulder are usually found in September or October, booked 36 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Charlotte to Boulder

Keep the following information in mind while searching for Charlotte to Boulder flight deals. Data was last updated August 18, 2025.

Round-trip from

$133
(Frontier)

One-way from

$89
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$254
From Charlotte Douglas to Boulder
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One-way flight from Charlotte Douglas to Boulder
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Charlotte to Boulder

Cheapest flights from Charlotte to Boulder
Explore the most affordable flight options available from Charlotte to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

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 9/125:20 pmCLT - DEN
Nonstop3h 47mFrontier
Mon 9/1510:55 amDEN - CLT
Nonstop3h 30mFrontier
Deal found 8/17$133
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:20 pmCLT - DEN
Nonstop3h 47mFrontier
Thu 10/912:00 pmDEN - CLT
1 stop19h 00mFrontier
Deal found 8/18$134
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:38 pmCLT - DEN
Nonstop3h 47mFrontier
Mon 9/2910:55 amDEN - CLT
Nonstop3h 30mFrontier
Deal found 8/18$135
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 8/255:32 pmCLT - DEN
Nonstop3h 54mFrontier
Thu 9/47:40 amDEN - CLT
1 stop10h 11mFrontier
Deal found 8/17$137
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.
Thu 10/165:34 pmCLT - DEN
Nonstop3h 52mFrontier
Sat 10/1812:34 amDEN - CLT
1 stop15h 55mFrontier
Deal found 8/17$138
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:20 pmCLT - DEN
Nonstop3h 47mFrontier
Mon 9/2910:55 amDEN - CLT
Nonstop3h 30mFrontier
Deal found 8/17$140
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:07 pmCLT - DEN
Nonstop3h 54mFrontier
Sat 11/112:34 amDEN - CLT
1 stop20h 23mFrontier
Deal found 8/17$141
This Gotogate deal was found by Cheapflights users on 8/16. 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.
Mon 9/158:50 amCLT - DEN
1 stop26h 21mFrontier
Sun 9/217:40 amDEN - CLT
1 stop10h 11mFrontier
Deal found 8/16$143
This Booking.com deal was found by Cheapflights users on 8/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:11 pmCLT - DEN
1 stop12h 31mFrontier
Mon 9/87:40 amDEN - CLT
1 stop10h 11mFrontier
Deal found 8/16$144
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:20 pmCLT - DEN
Nonstop3h 47mFrontier
Sun 10/510:55 amDEN - CLT
Nonstop3h 30mFrontier
Deal found 8/18$146
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:50 amCLT - DEN
1 stop26h 21mFrontier
Mon 9/222:05 pmDEN - CLT
1 stop21h 27mFrontier
Deal found 8/17$147

Cheapflights Fare Finder

 
Customize your flight search to find flights from Charlotte 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 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Charlotte to Boulder that are best for you.

Fly from

Charlotte

Fly to

Boulder

Route

Depart

Return

Price

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Fri 9/12

5:20 pm-7:07 pm

Nonstop3h 47m

Denver Intl

Mon 9/15

10:55 am-4:25 pm

Nonstop3h 30m

$133

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Mon 9/29

5:20 pm-7:07 pm

Nonstop3h 47m

Denver Intl

Thu 10/2

10:55 am-4:25 pm

Nonstop3h 30m

$135

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Sun 10/19

5:34 pm-7:26 pm

Nonstop3h 52m

Denver Intl

Sun 10/19

11:59 pm-9:15 am

1 stop7h 16m

$135

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Mon 8/25

5:32 pm-7:26 pm

Nonstop3h 54m

Denver Intl

Thu 9/4

7:40 am-7:51 pm

1 stop10h 11m

$137

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Sun 8/24

5:32 pm-7:26 pm

Nonstop3h 54m

Denver Intl

Thu 9/4

7:40 am-7:51 pm

1 stop10h 11m

$137

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Fri 10/10

5:34 pm-7:26 pm

Nonstop3h 52m

Denver Intl

Sat 10/18

12:34 am-6:29 pm

1 stop15h 55m

$138

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Sun 11/9

6:20 pm-8:14 pm

Nonstop3h 54m

Denver Intl

Wed 11/12

12:34 am-9:57 pm

1 stop19h 23m

$138

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Wed 10/22

8:48 am-8:58 am

1 stop26h 10m

Denver Intl

Mon 10/27

11:20 am-4:39 pm

Nonstop3h 19m

$138

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Sun 10/12

5:34 pm-7:26 pm

Nonstop3h 52m

Denver Intl

Thu 10/16

11:59 pm-9:15 am

1 stop7h 16m

$138

CharlotteDenver

CLT - DEN

CLTDEN

Charlotte Douglas

Thu 10/30

6:07 pm-8:01 pm

Nonstop3h 54m

Denver Intl

Sat 11/1

12:34 am-9:57 pm

1 stop20h 23m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 18 results
1
2

Best time to book a flight from Charlotte to Boulder

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

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

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

Booking 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Charlotte to Boulder. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Charlotte to Boulder?

Currently, October is the cheapest month in which you can book a flight from Charlotte to Boulder (average of $197). Flying from Charlotte to Boulder 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 CLT to BD9?

Find hourly flight availability from Charlotte 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 August 18, 2025.

When flying from Charlotte to Boulder, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Use this chart to determine the cheapest time to fly round-trip from Charlotte to Boulder. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Charlotte to Boulder

Explore weekly flight availability from Charlotte 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 August 18, 2025.

The most flights from CLT to BD9 are scheduled on a Sunday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

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 August 18, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Charlotte to Boulder. 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

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

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

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

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

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

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
8,925 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

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

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

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
3,212 reviews
Southwest
8.0
Very good
4,246 reviews

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

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 Charlotte 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 Charlotte to Boulder?

    Charlotte Douglas (CLT), located 5.7 mi from the city center, is the airport you fly out of when you book flights from Charlotte to Boulder. 6 airlines have flights from Douglas to Boulder on a regular basis. Booking flights from Charlotte Douglas to Boulder should not be difficult; the airport handles an average of 6 outbound flights to Boulder per day.

  • How popular is this Charlotte to Boulder flight route?

    Flights from Charlotte Douglas to Boulder have been viewed 123 times in the past calendar month.

  • How long is the flight from Charlotte to Boulder?

    There are many flights that can get you from Charlotte to Boulder in 3h 47m. Fly via Frontier to get the fastest option. There are 1334 mi between Charlotte and Boulder. Generally, flights for this route are nonstop.

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

    No one likes to see their flight delayed. When booking a flight from Charlotte to Boulder consider choosing United Airlines (76%), American Airlines (59%) or Frontier (52%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Charlotte to Boulder?

    Looking for the cheapest flight from Charlotte to Boulder? While on average our users pay $670, our data indicates the cheapest price to be $88. The most popular route (Charlotte Douglas - Denver Intl), is priced around $143.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Charlotte to Boulder (average of $197). Flying from Charlotte to Boulder 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

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Top 6 airlines flying from Charlotte to Boulder

Discover the top 6 airlines that operate flights from Charlotte 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 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$188FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$348FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$137Average$384FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$152Average$305FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$175Average$348FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$195Average$372FlexibilityNo cancel feeOn-time63%

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