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$96+ Cheap flights from Atlanta (ATL) 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — DEN
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Boulder are usually found in October or September, booked 15 days in advance, depart on a Friday or Tuesday and return on a Friday

Cheap flight deals from Atlanta to Boulder

Keep the following information in mind while searching for Atlanta to Boulder flight deals. Data was last updated abril 29, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$124
(Frontier)

One-way from

$96
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$227
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Denver Intl flights.
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From Atlanta Hartsfield-Jackson to Boulder
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One-way flight from Atlanta Hartsfield-Jackson to Boulder
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Highest demand for flights based on searches. 9% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Atlanta to Boulder

Cheapest flights from Atlanta to Boulder
Explore the most affordable flight options available from Atlanta to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 29, 2025.

This Frontier deal was found by Cheapflights users on 4/29. 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.
mar. 5/277:39 amATL - DEN
Nonstop3h 22mFrontier
jue. 5/2912:59 amDEN - ATL
Nonstop3h 11mFrontier
Deal found 4/29$124
This Booking.com deal was found by Cheapflights users on 4/29. 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.
lun. 7/77:45 amATL - DEN
Nonstop3h 17mMultiple Airlines
jue. 7/107:00 pmDEN - ATL
1 stop14h 30mMultiple Airlines
Deal found 4/29$185
This Delta deal was found by Cheapflights users on 4/29. 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.
mié. 7/27:25 amATL - DEN
Nonstop3h 09mDelta
mié. 7/93:12 pmDEN - ATL
Nonstop3h 14mDelta
Deal found 4/29$188
This United Airlines deal was found by Cheapflights users on 4/29. 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.
mié. 6/117:28 pmATL - DEN
1 stop6h 47mUnited Airlines
lun. 6/1612:57 amDEN - ATL
Nonstop3h 03mUnited Airlines
Deal found 4/29$207
This American Airlines deal was found by Cheapflights users on 4/29. 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.
sáb. 5/248:21 pmATL - DEN
1 stop5h 38mAmerican Airlines
mié. 5/2812:16 pmDEN - ATL
1 stop5h 15mAmerican Airlines
Deal found 4/29$208
This Southwest deal was found by Cheapflights users on 4/29. 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.
mié. 6/257:35 pmATL - DEN
Nonstop3h 25mSouthwest
mié. 7/25:30 pmDEN - ATL
Nonstop3h 00mSouthwest
Deal found 4/29$218
This Sun Country Air deal was found by Cheapflights users on 4/29. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/177:10 pmATL - DEN
1 stop17h 30mSun Country Air
lun. 10/2010:15 amDEN - ATL
1 stop5h 27mSun Country Air
Deal found 4/29$255

Cheapflights Fare Finder

Customize your flight search to find flights from Atlanta 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 abril 29, 2025.
Use the filters below to find and compare flights from Atlanta to Boulder that are best for you.

Fly from

Atlanta

Fly to

Boulder

Route

Depart

Return

Price

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mar. 5/27

7:39 am-9:01 am

Nonstop3h 22m

Denver Intl

jue. 5/29

12:59 am-6:10 am

Nonstop3h 11m

$124

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mié. 7/2

7:25 am-8:34 am

Nonstop3h 09m

Denver Intl

mié. 7/9

3:12 pm-8:26 pm

Nonstop3h 14m

$188

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

vie. 7/18

6:20 pm-5:01 pm

1 stop24h 41m

Denver Intl

jue. 7/24

12:59 am-6:10 am

Nonstop3h 11m

$191

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mié. 6/11

4:23 pm-6:00 pm

Nonstop3h 37m

Denver Intl

mar. 6/17

7:50 am-5:32 pm

1 stop7h 42m

$207

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

sáb. 5/24

8:21 pm-11:59 pm

1 stop5h 38m

Denver Intl

mié. 5/28

12:16 pm-7:31 pm

1 stop5h 15m

$208

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mié. 6/25

7:35 pm-9:00 pm

Nonstop3h 25m

Denver Intl

mié. 7/2

5:30 pm-10:30 pm

Nonstop3h 00m

$218

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

jue. 5/15

7:11 am-8:33 am

Nonstop3h 22m

$96

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mar. 6/10

4:53 pm-6:09 pm

Nonstop3h 16m

$99

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mar. 7/1

12:36 pm-5:40 pm

1 stop7h 04m

$100

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

mié. 6/11

7:28 pm-12:15 am

1 stop6h 47m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 14 results
1
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Best time to book a flight from Atlanta to Boulder

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

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

Use this chart to determine the optimal time to book a round-trip flight from Atlanta to Boulder. Price data was last updated on April 25, 2025.

The price you pay for your flight from Atlanta to Boulder may vary depending on when you book. For the best chance of a lower fare, look to book 15 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

Find hourly flight availability from Atlanta 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 abril 29, 2025.

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

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

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

Travelers seeking maximum savings on their Atlanta to Boulder flight should consider departing on Saturday 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 Atlanta to Boulder

Explore weekly flight availability from Atlanta 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 abril 29, 2025.

The most flights from ATL to BD9 are scheduled on a Monday (35 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 abril 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Atlanta to Boulder by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,936 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Atlanta 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 Atlanta to Boulder?

    If you book a flight to Boulder from Atlanta, you will be flying from Hartsfield-Jackson, which is the city’s only airport. Atlanta Hartsfield-Jackson (ATL) is located 8.2 mi from the center of Atlanta. There are 27 flights from Hartsfield-Jackson to Boulder per day from 5 different airlines.

  • How popular is this Atlanta to Boulder flight route?

    Flights from Atlanta Hartsfield-Jackson to Boulder have been viewed 302 times in the past calendar month.

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

    The cheapest airlines for a one-way flight from Atlanta to Boulder are Frontier ($96), Delta ($99), and American Airlines ($100).

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Atlanta to Boulder on time: Air Canada (86%), United Airlines (86%), LATAM Airlines (75%).

  • What are the cheapest flights from Atlanta to Boulder?

    On average you can expect to pay $550 for a flight from Atlanta to Boulder. The cheapest flight overall is $91 while the most popular route, (Atlanta Hartsfield-Jackson - Denver Intl) is currently priced at $158.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Atlanta to Boulder (average of $197). Flying from Atlanta 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 5 airlines flying from Atlanta to Boulder

Discover the top 5 airlines that operate flights from Atlanta 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$170FlexibilityNo cancel feeOn-time62%
DeltaCheapest$122Average$377FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$139Average$402FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$178Average$390FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$198Average$332FlexibilityNo cancel feeOn-time71%

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