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$72+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — DEN
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Boulder are usually found in October or January, booked 32 days in advance, depart on a Friday or Wednesday and return on a Thursday

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 September 14, 2025.

Round-trip from

$101
(Kiwi.com)

One-way from

$72
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$198
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. 4% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/257:30 amATL - DEN
Nonstop3h 33mFrontier
Mon 11/31:42 pmDEN - ATL
Nonstop3h 08mFrontier
Deal found 9/13$101
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/37:34 amATL - DEN
Nonstop3h 24mFrontier
Mon 10/612:59 amDEN - ATL
Nonstop3h 03mFrontier
Deal found 9/13$102
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/257:30 amATL - DEN
Nonstop3h 33mFrontier
Wed 10/2912:59 amDEN - ATL
Nonstop3h 03mFrontier
Deal found 9/13$103
This Frontier deal was found by Cheapflights users on 9/13. 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 10/27:23 pmATL - DEN
Nonstop3h 24mFrontier
Fri 10/312:28 pmDEN - ATL
1 stop5h 58mFrontier
Deal found 9/13$104
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Wed 10/2912:15 pmATL - DEN
Nonstop3h 30mFrontier
Fri 10/3112:59 amDEN - ATL
Nonstop3h 03mFrontier
Deal found 9/13$107
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Mon 9/297:23 pmATL - DEN
Nonstop3h 24mFrontier
Wed 10/14:44 pmDEN - ATL
Nonstop3h 12mFrontier
Deal found 9/13$110
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/27:23 pmATL - DEN
Nonstop3h 24mFrontier
Wed 10/81:40 pmDEN - ATL
Nonstop3h 08mFrontier
Deal found 9/13$114
This Frontier deal was found by Cheapflights users on 9/13. 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 10/307:59 pmATL - DEN
Nonstop3h 31mFrontier
Sat 11/112:25 pmDEN - ATL
Nonstop2h 58mFrontier
Deal found 9/13$116
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 10/208:37 pmATL - DEN
1 stop12h 59mFrontier
Sun 10/261:42 pmDEN - ATL
Nonstop3h 08mFrontier
Deal found 9/13$117
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/237:42 amATL - DEN
Nonstop3h 24mFrontier
Tue 9/304:43 pmDEN - ATL
Nonstop3h 12mFrontier
Deal found 9/13$118
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Wed 10/112:05 pmATL - DEN
1 stop21h 15mFrontier
Mon 10/612:59 amDEN - ATL
Nonstop3h 03mFrontier
Deal found 9/13$119

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 September 14, 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

Thu 12/4

7:35 am-9:17 am

Nonstop3h 42m

Denver Intl

Tue 12/9

1:43 pm-6:49 pm

Nonstop3h 06m

$115

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Thu 10/30

7:59 pm-9:30 pm

Nonstop3h 31m

Denver Intl

Sat 11/1

12:59 am-5:02 am

Nonstop3h 03m

$121

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Wed 10/29

7:30 am-9:03 am

Nonstop3h 33m

Denver Intl

Thu 10/30

12:59 am-6:02 am

Nonstop3h 03m

$121

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Tue 10/14

8:35 am-9:55 am

Nonstop3h 20m

Denver Intl

Tue 10/21

5:35 pm-10:25 pm

Nonstop2h 50m

$157

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Fri 12/5

8:37 am-6:43 pm

1 stop12h 06m

Denver Intl

Tue 12/9

1:43 pm-6:49 pm

Nonstop3h 06m

$161

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Thu 12/4

7:54 pm-9:31 pm

Nonstop3h 37m

Denver Intl

Wed 12/10

8:00 am-6:32 pm

1 stop8h 32m

$162

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Wed 10/8

12:41 pm-7:14 am

1 stop20h 33m

Denver Intl

Sun 10/12

6:00 am-8:13 am

1 stop24h 13m

$168

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Thu 12/4

7:54 pm-9:31 pm

Nonstop3h 37m

Denver Intl

Wed 12/10

9:19 am-7:53 pm

1 stop8h 34m

$178

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Fri 12/5

7:54 pm-9:31 pm

Nonstop3h 37m

Denver Intl

Wed 12/10

7:00 am-6:07 pm

2 stops9h 07m

$194

AtlantaDenver

ATL - DEN

ATLDEN

Atlanta Hartsfield-Jackson

Fri 12/5

4:30 pm-5:51 pm

Nonstop3h 21m

Denver Intl

Mon 12/8

12:50 am-5:47 am

Nonstop2h 57m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 22 results
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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 September 12, 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 32 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 September 14, 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 September 14, 2025.

The most flights from ATL to BD9 are scheduled on a Friday (44 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (25 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 September 14, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Atlanta to Boulder by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,956 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,931 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 34 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 310 times in the past calendar month.

  • How long is the flight from Atlanta to Boulder?

    For as low as $115, Frontier can have you in Boulder from Atlanta in 3h 42m. The distance from Atlanta to Boulder is about 1196 mi. Generally, flights for this route are nonstop.

  • 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: Sun Country Air (100%), LATAM Airlines (82%), Air Canada (80%).

  • What are the cheapest flights from Atlanta to Boulder?

    On average you can expect to pay $600 for a flight from Atlanta to Boulder. The cheapest flight overall is $76 while the most popular route, (Atlanta Hartsfield-Jackson - Denver Intl) is currently priced at $133.

  • 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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Alternative routes for Atlanta to Boulder

See prices for flight routes from nearby airports that may be better suited for you.
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Augusta to Montrose flights
Valdosta to Colorado Springs flights
Albany to Grand Junction flights
Tallahassee to Durango flights
Columbus to Denver flights
Tallahassee to Aspen flights
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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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$70Average$197FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$361FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$147Average$429FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$165Average$384FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$191Average$350FlexibilityNo cancel feeOn-time71%

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