HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Atlanta

$29+ Cheap flights from Key Largo, FL to Atlanta (ATL)

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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ATL
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to Atlanta with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Key Largo to Atlanta Hartsfield-Jackson are usually found in October or September, booked 68 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Key Largo to Atlanta

Cheapest flights from Key Largo to Atlanta
Explore the most affordable flight options available from Key Largo to Atlanta. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This eDestinos deal was found by Cheapflights users on 12/21. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:05 pmMIA - ATL
Nonstop2h 18mFrontier
Mon 1/510:50 pmATL - MIA
Nonstop2h 01mFrontier
Deal found 12/21$68
This eDestinos deal was found by Cheapflights users on 12/22. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:05 pmMIA - ATL
Nonstop2h 18mFrontier
Mon 1/57:05 pmATL - MIA
Nonstop2h 04mFrontier
Deal found 12/22$69
This eDestinos deal was found by Cheapflights users on 12/21. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:30 amMIA - ATL
Nonstop2h 13mFrontier
Sun 1/48:53 amATL - MIA
Nonstop2h 05mFrontier
Deal found 12/21$81
This Super.com deal was found by Cheapflights users on 12/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:30 amMIA - ATL
Nonstop2h 13mFrontier
Mon 1/57:05 pmATL - MIA
Nonstop2h 04mFrontier
Deal found 12/23$82
This Mytrip deal was found by Cheapflights users on 12/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:00 amMIA - ATL
Nonstop1h 56mMultiple Airlines
Sat 1/310:46 pmATL - MIA
Nonstop2h 01mMultiple Airlines
Deal found 12/21$84
This Super.com deal was found by Cheapflights users on 12/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:30 amMIA - ATL
Nonstop2h 13mFrontier
Wed 12/3110:46 pmATL - MIA
Nonstop2h 01mFrontier
Deal found 12/20$91
This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:30 amMIA - ATL
Nonstop2h 13mFrontier
Thu 1/110:46 pmATL - MIA
Nonstop2h 01mFrontier
Deal found 12/21$92

Find flight deals from Key Largo to Atlanta

Keep the following information in mind while searching for Key Largo to Atlanta flight deals. Data was last updated December 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$52
(CheapOair)

One-way from

$29
(Expedia)

Popular in

April

Cheapest in

October

Average price

$158
Provider with most accurate pricing for Miami-Atlanta Hartsfield-Jackson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Atlanta Hartsfield-Jackson flights.
Search Deals
From Key Largo to Atlanta Hartsfield-Jackson
Search Deals
One-way flight from Key Largo to Atlanta Hartsfield-Jackson
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Atlanta 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 December 23, 2025.
Use the filters below to find and compare flights from Key Largo to Atlanta that are best for you.

Fly from

Key Largo

Fly to

Atlanta

Route

Depart

Return

Price

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Thu 1/29

6:05 pm-8:22 pm

Nonstop2h 17m

Atlanta Hartsfield-Jackson

Mon 2/2

8:40 am-10:40 am

Nonstop2h 00m

$137

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Thu 1/8

4:32 pm-6:42 pm

Nonstop2h 10m

Atlanta Hartsfield-Jackson

Mon 1/12

6:45 pm-8:44 pm

Nonstop1h 59m

$147

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Fri 2/13

1:40 pm-9:05 pm

1 stop7h 25m

Atlanta Hartsfield-Jackson

Mon 2/16

7:30 pm-11:00 pm

1 stop3h 30m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Tue 2/10

6:55 am-5:20 pm

2 stops10h 25m

Atlanta Hartsfield-Jackson

Wed 2/11

6:30 pm-10:00 pm

1 stop3h 30m

$189

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Fri 2/13

7:25 am-7:05 pm

1 stop11h 40m

Atlanta Hartsfield-Jackson

Sun 2/15

8:45 am-4:30 pm

1 stop7h 45m

$189

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Tue 2/10

6:55 am-5:20 pm

2 stops10h 25m

Atlanta Hartsfield-Jackson

Tue 2/17

6:10 am-1:45 pm

1 stop7h 35m

$189

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Wed 1/21

12:55 pm-7:35 pm

1 stop6h 40m

Atlanta Hartsfield-Jackson

Wed 1/28

11:00 am-10:00 pm

2 stops11h 00m

$189

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Wed 1/7

6:55 am-5:20 pm

2 stops10h 25m

Atlanta Hartsfield-Jackson

Thu 1/8

7:40 am-4:10 pm

1 stop8h 30m

$199

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Mon 3/23

6:15 am-9:55 am

1 stop3h 40m

Atlanta Hartsfield-Jackson

Fri 4/10

6:30 pm-10:00 pm

1 stop3h 30m

$207

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Sat 1/17

7:00 am-3:30 pm

1 stop8h 30m

Atlanta Hartsfield-Jackson

Tue 1/20

1:10 pm-10:00 pm

2 stops8h 50m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 23 results
1
2
3

Best time to book a flight from Key Largo to Atlanta

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Atlanta. Price data was last updated on December 19, 2025.

Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to Atlanta. 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 Key Largo to Atlanta?

Currently, February is the cheapest month in which you can book a flight from Key Largo to Atlanta (average of $45). Flying from Key Largo to Atlanta in June is currently the most expensive (average of $79). 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 KE9 to ATL?

Find hourly flight availability from Key Largo to Atlanta. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

One of the essential ways to save on airfare from Key Largo to Atlanta is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 41% on airfare.

What is the cheapest day to fly from Key Largo to Atlanta?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Atlanta. Price data was last updated on December 20, 2025.

Travelers seeking maximum savings on their Key Largo to Atlanta flight should consider departing on Wednesday mornings 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 Key Largo to Atlanta

Explore weekly flight availability from Key Largo to Atlanta. 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 December 23, 2025.

The most flights from KE9 to ATL are scheduled on a Tuesday (81 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (17 on average).

Reviews of airlines servicing Atlanta

Get insights into the airlines that provide service to Atlanta. 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 Atlanta. Reviews last updated December 23, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines from Key Largo to Atlanta to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,255 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,255 reviews
Southwest
8.0
Very good
4,255 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,015 reviews
Southwest
8.0
Very good
4,255 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,054 reviews
Southwest
8.0
Very good
4,255 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,196 reviews
Southwest
8.0
Very good
4,255 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,073 reviews
Southwest
8.0
Very good
4,255 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Atlanta. 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 into for flights to Atlanta from Key Largo?

    Atlanta Hartsfield-Jackson (ATL) is the airport you will fly into if you book a flight from Key Largo to Atlanta. You should not have trouble finding flights to Hartsfield-Jackson from Key Largo; the airport handles an average of 53 inbound flights from Key Largo per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Atlanta airport from Key Largo. It is only a 8.2 mi journey from Hartsfield-Jackson (ATL) to Atlanta’s city center.

  • How popular is this Key Largo to Atlanta flight route?

    Within the past month, 152 users have taken a look at flights from Key Largo to Atlanta Hartsfield-Jackson.

  • How long is the flight from Key Largo to Atlanta?

    For as low as $137, Delta can have you in Atlanta from Key Largo in 2h 17m. The distance between Key Largo and Atlanta is about 596 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $30. Users have also found prices from $31 and $32 on JetBlue and Spirit Airlines, respectively.

  • What are the most reliable airlines from Key Largo to Atlanta?

    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 Key Largo to Atlanta on time: Spirit Airlines (89%), Finnair (88%), Envoy Air (87%).

  • What are the cheapest flights from Key Largo to Atlanta?

    The cheapest flight price from Key Largo to Atlanta is $30. On average you can expect to pay $800. The most popular route, (Miami - Atlanta Hartsfield-Jackson), can usually be booked for $51.

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

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

  • How can I find direct flights from Key Largo to Atlanta?

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

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

    Yes. Cheapflights offers flight deals from Key Largo to Atlanta 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 Key Largo to Atlanta?

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Atlanta (average of $45). Flying from Key Largo to Atlanta in June is currently the most expensive (average of $79). 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

Traveling to a place near Atlanta?

Book flights to Atlanta if you plan to visit one of these locations
College Park
Duluth
McDonough
Roswell
Norcross
Marietta
Stone Mountain
Lawrenceville
Conyers
Kennesaw
Peachtree Corners
Buford
Lithia Springs
Lithonia
Covington
Smyrna
Commerce
Douglasville
Auburn
Suwanee

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Key Largo to Atlanta

See prices for flight routes from nearby airports that may be better suited for you.
Fort Lauderdale to Atlanta flights
Miami to Atlanta flights
Tampa to Atlanta flights
West Palm Beach to Atlanta flights
Orlando to Atlanta flights
Fort Myers to Atlanta flights
Jacksonville to Atlanta flights
Sarasota to Atlanta flights
Miami to Jacksonville flights
Fort Lauderdale to Asheville flights
Fort Lauderdale to Jacksonville flights
Miami to Asheville flights
Tampa to Asheville flights
Pensacola to Atlanta flights
Orlando Sanford Intl to Asheville flights
Orlando to Chattanooga flights
Sarasota to Asheville flights
Fort Lauderdale to Tallahassee flights
Tampa to Jacksonville flights
Tampa to Savannah flights
Miami to Savannah flights
Miami to Tallahassee flights
West Palm Beach to Savannah flights
Fort Myers to Asheville flights
Fort Myers to Jacksonville flights
Jacksonville to Chattanooga flights
St Petersburg to Asheville flights
Melbourne to Atlanta flights
Orlando to Asheville flights
Sarasota to Jacksonville flights
Fort Lauderdale to Savannah flights
Miami to Chattanooga flights
Valparaiso to Atlanta flights
West Palm Beach to Jacksonville flights
Fort Myers to Savannah flights
Orlando to Jacksonville flights
Fort Lauderdale to Chattanooga flights
West Palm Beach to Asheville flights
Pensacola to Jacksonville flights
Daytona Beach to Atlanta flights
Panama City to Atlanta flights
Fort Myers to Tallahassee flights
Tampa to Chattanooga flights
Orlando to Savannah flights
Tampa to Tallahassee flights
Key West to Atlanta flights
Tallahassee to Atlanta flights
Fort Lauderdale to Augusta flights
Jacksonville to Asheville flights
West Palm Beach to Tallahassee flights

Top 6 airlines flying from Key Largo to Atlanta

Discover the top 6 airlines that operate flights from Key Largo to Atlanta. 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$48Average$115FlexibilityNo cancel feeOn-time65%
FrontierCheapest$54Average$117FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$63Average$155FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$136Average$284FlexibilityNo cancel feeOn-time71%
DeltaCheapest$147Average$315FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$163Average$270FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.