Key Largo

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

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — MIA
Jan 14 — Jan 211
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Key Largo are usually found in September or January, booked 30 days in advance, depart on a Saturday or Sunday and return on a Friday

Cheap flight deals from Atlanta to Key Largo

Cheapest flights from Atlanta to Key Largo
Explore the most affordable flight options available from Atlanta to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Super.com deal was found by Cheapflights users on 12/14. 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 12/307:03 pmATL - MIA
Nonstop2h 01mSpirit Airlines
Tue 1/68:00 amMIA - ATL
Nonstop1h 56mSpirit Airlines
Deal found 12/14$60
This Super.com deal was found by Cheapflights users on 12/15. 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 12/307:03 pmATL - MIA
Nonstop2h 01mSpirit Airlines
Wed 12/318:00 amMIA - ATL
Nonstop1h 56mSpirit Airlines
Deal found 12/15$61
This Priceline deal was found by Cheapflights users on 12/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:03 pmATL - MIA
Nonstop2h 01mSpirit Airlines
Thu 1/18:00 amMIA - ATL
Nonstop1h 56mSpirit Airlines
Deal found 12/15$62
This eDestinos deal was found by Cheapflights users on 12/15. 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.
Mon 12/2910:50 pmATL - MIA
Nonstop2h 01mFrontier
Sat 1/105:20 amMIA - ATL
Nonstop2h 13mFrontier
Deal found 12/15$63
This Cheapflightsfares deal was found by Cheapflights users on 12/12. 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 12/2410:46 pmATL - MIA
Nonstop2h 01mFrontier
Mon 12/2910:19 pmMIA - ATL
Nonstop2h 15mFrontier
Deal found 12/12$64
This Priceline deal was found by Cheapflights users on 12/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:46 pmATL - MIA
Nonstop2h 01mMultiple Airlines
Tue 1/68:00 amMIA - ATL
Nonstop1h 56mMultiple Airlines
Deal found 12/13$65
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/2310:46 pmATL - MIA
Nonstop2h 01mMultiple Airlines
Tue 12/308:00 amMIA - ATL
Nonstop1h 56mMultiple Airlines
Deal found 12/12$66
This Super.com deal was found by Cheapflights users on 12/15. 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.
Wed 12/3111:01 amATL - MIA
Nonstop2h 05mSpirit Airlines
Wed 1/77:00 amMIA - ATL
1 stop11h 08mSpirit Airlines
Deal found 12/15$68
This Frontier deal was found by Cheapflights users on 12/13. 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.
Tue 12/2310:46 pmATL - MIA
Nonstop2h 01mFrontier
Wed 1/75:20 amMIA - ATL
Nonstop2h 13mFrontier
Deal found 12/13$69
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 12/2710:46 pmATL - MIA
Nonstop2h 01mMultiple Airlines
Mon 12/298:00 amMIA - ATL
Nonstop1h 56mMultiple Airlines
Deal found 12/13$72
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 12/2310:46 pmATL - MIA
Nonstop2h 01mMultiple Airlines
Mon 12/299:59 pmMIA - ATL
Nonstop2h 00mMultiple Airlines
Deal found 12/13$73
This Frontier deal was found by Cheapflights users on 12/13. 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.
Mon 12/2210:50 pmATL - MIA
Nonstop2h 01mFrontier
Tue 12/235:30 amMIA - ATL
Nonstop2h 13mFrontier
Deal found 12/13$74

Find flight deals from Atlanta to Key Largo

Keep the following information in mind while searching for Atlanta to Key Largo flight deals. Data was last updated December 15, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$58
(Cheapflightsfares)

One-way from

$29
(Super.com)

Popular in

August

Cheapest in

September

Average price

$190
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Miami flight deals.
Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Miami flights.
From Atlanta Hartsfield-Jackson to Key Largo
One-way flight from Atlanta Hartsfield-Jackson to Key Largo
High demand for flights, 0% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Atlanta to Key Largo 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 15, 2025.
Use the filters below to find and compare flights from Atlanta to Key Largo that are best for you.

Fly from

Atlanta

Fly to

Key Largo

Route

Depart

Return

Price

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 4/19

10:34 am-12:38 pm

Nonstop2h 04m

Miami

Wed 4/22

7:35 am-9:37 am

Nonstop2h 02m

$138

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 12/28

7:15 pm-12:05 am

1 stop4h 50m

Miami

Tue 12/30

7:00 am-10:25 am

1 stop3h 25m

$151

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Mon 12/29

7:15 pm-12:05 am

1 stop4h 50m

Miami

Tue 12/30

7:00 am-10:25 am

1 stop3h 25m

$151

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Fri 1/9

3:45 pm-9:30 pm

1 stop5h 45m

Miami

Mon 1/12

6:55 am-10:25 am

1 stop3h 30m

$151

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 12/28

7:15 pm-12:05 am

1 stop4h 50m

Miami

Thu 1/1

6:55 am-10:25 am

1 stop3h 30m

$151

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 2/8

3:45 pm-9:30 pm

1 stop5h 45m

Miami

Sun 2/15

7:35 am-12:05 pm

1 stop4h 30m

$151

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Fri 1/9

3:45 pm-9:30 pm

1 stop5h 45m

Miami

Tue 1/13

7:15 am-3:10 pm

2 stops7h 55m

$156

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Tue 2/3

1:10 pm-10:00 pm

2 stops8h 50m

Miami

Sat 2/14

6:35 am-10:20 am

1 stop3h 45m

$156

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 3/1

7:30 pm-11:00 pm

1 stop3h 30m

Miami

Sat 3/7

10:35 am-6:20 pm

2 stops7h 45m

$156

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 2/15

8:00 am-11:50 am

1 stop3h 50m

Miami

Thu 2/19

6:30 am-2:15 pm

2 stops7h 45m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 22 results
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Best time to book a flight from Atlanta to Key Largo

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

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

Use this chart to determine the optimal time to book a round-trip flight from Atlanta to Key Largo. Price data was last updated on December 12, 2025.

The price you pay for your flight from Atlanta to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 30 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 Key Largo?

Currently, March is the cheapest month in which you can book a flight from Atlanta to Key Largo (average of $46). Flying from Atlanta to Key Largo in July is currently the most expensive (average of $80). 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 KE9?

Find hourly flight availability from Atlanta to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s optimal to fly from Atlanta to Key Largo in the afternoon. By choosing this option you can save up to 54% on the cost of your flight, compared to a flight at noon.

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

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

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

Explore weekly flight availability from Atlanta to Key Largo. 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 15, 2025.

The most flights from ATL to KE9 are scheduled on a Monday (77 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (37 on average).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated December 15, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and American Airlines from Atlanta to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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

Comfort

8.0

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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 Atlanta to Key Largo. 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 Key Largo?

    For a flight from Atlanta to Key Largo, you will be flying from Hartsfield-Jackson. Atlanta Hartsfield-Jackson (ATL) is just 8.2 mi from the center of the city. Hartsfield-Jackson is the only Atlanta airport and it handles 57 outbound flights to Key Largo per day. 6 airlines have flights to Key Largo from Atlanta Hartsfield-Jackson on a regular basis.

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

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

    Airlines like Spirit Airlines and Southwest fly from Atlanta to Key Largo in about 2h 04m. The time it takes to get you to your destination can typically vary by up to 2h 46m. There are 596 mi between Atlanta and Key Largo. This flight may include one or multiple stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $29. Users have also found prices from $33 and $78 on Spirit Airlines and American Airlines, respectively.

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

    No one likes to see their flight delayed. When booking a flight from Atlanta to Key Largo consider choosing Spirit Airlines (89%), Envoy Air (78%) or British Airways (78%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $26. While the most popular route (Atlanta Hartsfield-Jackson - Miami) can be booked for $49 on average, our data indicates $476 when flying from Atlanta to Key Largo.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Atlanta to Key Largo (average of $46). Flying from Atlanta to Key Largo in July is currently the most expensive (average of $80). 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 Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Atlanta to Key Largo

Discover the top 6 airlines that operate flights from Atlanta to Key Largo. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$130FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$58Average$178FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$89Average$177FlexibilityNo cancel feeOn-time62%
DeltaCheapest$116Average$321FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$138Average$363FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$306FlexibilityNo cancel feeOn-time63%

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