$48 Find Cheap Flights from Atlanta to Boulder

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Atlanta to Boulder departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$86
Overall average: $231
Frontier
Sat 2/7Thu 2/12
ATL - DEN • Non-stop
Cheapest non-stop
$87
Typical prices: $116-$294
Frontier
Fri 1/23Sun 1/25
ATL - DEN • Non-stop
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Flight Deals
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Flight Deals

Cheap Flights from Atlanta to Boulder (ATL-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Atlanta to Boulder that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Atlanta to Boulder

Sat, Feb 7 - Thu, Feb 12
Frontier Logo
10:40 am - 12:19 pm
ATL
-
DEN
3h 39mnonstop
Frontier Logo
10:44 am - 8:41 pm
DEN
-
ATL
7h 57m1 stop
$86Frontier
Fri, Jan 23 - Sun, Jan 25
Frontier Logo
8:04 pm - 9:45 pm
ATL
-
DEN
3h 41mnonstop
Frontier Logo
6:00 am - 11:11 am
DEN
-
ATL
3h 11mnonstop
$87Frontier
Mon, Jan 26 - Fri, Jan 30
Frontier Logo
10:40 am - 12:19 pm
ATL
-
DEN
3h 39mnonstop
Frontier Logo
1:50 pm - 6:54 pm
DEN
-
ATL
3h 04mnonstop
$88Frontier
Thu, Jan 15 - Tue, Jan 20
Frontier Logo
7:46 pm - 9:26 pm
ATL
-
DEN
3h 40mnonstop
Frontier Logo
7:30 am - 12:36 pm
DEN
-
ATL
3h 06mnonstop
$89Frontier
Thu, Feb 5 - Mon, Feb 9
Frontier Logo
2:51 pm - 4:28 pm
ATL
-
DEN
3h 37mnonstop
Frontier Logo
6:00 am - 11:11 am
DEN
-
ATL
3h 11mnonstop
$91Frontier
Sun, Jan 11 - Tue, Jan 13
Frontier Logo
10:43 am - 12:21 pm
ATL
-
DEN
3h 38mnonstop
Frontier Logo
12:05 am - 5:21 am
DEN
-
ATL
3h 16mnonstop
$92Frontier
Sun, Jan 25 - Thu, Feb 5
Frontier Logo
8:04 pm - 9:45 pm
ATL
-
DEN
3h 41mnonstop
Frontier Logo
1:48 pm - 11:02 pm
DEN
-
ATL
7h 14m1 stop
$93Frontier
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
9:22 pm - 2:05 pm
ATL
-
DEN
18h 43m1 stop
Frontier Logo
6:00 am - 11:11 am
DEN
-
ATL
3h 11mnonstop
$94Frontier
Thu, Jan 29 - Thu, Feb 5
Frontier Logo
10:40 am - 12:19 pm
ATL
-
DEN
3h 39mnonstop
Frontier Logo
6:00 am - 11:11 am
DEN
-
ATL
3h 11mnonstop
$96Frontier
Sat, Jan 10 - Tue, Jan 13
Frontier Logo
9:15 pm - 8:00 am
ATL
-
DEN
12h 45m1 stop
Frontier Logo
11:30 am - 9:43 pm
DEN
-
ATL
8h 13m1 stop
$98Frontier
Useful Info

Good to know

Low seasonNovember
Cheapest flight$48
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Atlanta to Denver

When to book flights from Atlanta to Boulder

Are your dates flexible? Find out the best times to travel from Atlanta to Boulder based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Atlanta to Boulder: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Atlanta to Boulder 
DanaFlew with United Airlines
ATL
-
DEN
Nov 2024
Bring your own headset if you want to plug into the in chair TV. They don’t have any to pass out.
KristofferFlew with United Airlines
ATL
-
DEN
Feb 2024
Check prices all the time as they fluctuate often

FAQs for booking flights from Atlanta to Boulder

  • Which airports will I be using when flying from Atlanta to Boulder?

    When flying out of Atlanta you’ll be using Atlanta Hartsfield-Jackson. Boulder does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 33.4 mi away.

  • How long does a flight from Atlanta to Boulder take?

    Direct flights cover the 1,196 miles separating Atlanta and Boulder in about 3h 16m.

  • How many flights are there between Atlanta and Boulder?

    53 direct flights run between Atlanta and Boulder on a daily basis. On average, there are about 376 departures each week.

  • What’s the cheapest day of the week to fly between Atlanta and Boulder?

    Consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to Atlanta, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from Atlanta to Boulder?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Atlanta to Boulder.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Atlanta to Boulder?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boulder from Atlanta is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Atlanta to Boulder?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boulder with an airline and back to Atlanta with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Atlanta to Boulder?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boulder from Atlanta up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Atlanta to Boulder?

    In the last 72 hours, the cheapest one-way ticket between Atlanta and Boulder found on KAYAK was with Frontier for $45. Frontier offered a round-trip connection from $67 and Delta from $118.

Top tips for finding cheap flights from Atlanta to Boulder

  • There is no airport in Boulder. Instead, you’ll be flying into Denver Airport when flying between Atlanta and Boulder.
  • The cheapest flight from Atlanta to Boulder was found 37 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is January.

Reviews of the top 5 airlines serving Atlanta to Boulder

 
Need help choosing which airline to fly with from Atlanta to Boulder? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4250 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Cramped seating for me. Luckily it wasn’t a long flight

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

Did not understand a single word the attendant said on the pa system. I was glad it was not an emergency.

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

My flight was canceled I was promised a reginf still not received.

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