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Key Largo

$39+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — MIA
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Key Largo are usually found in September or April, booked 30 days in advance, depart on a Friday or Sunday and return on a Saturday

Cheap 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$67
(Cheapflightsfares)

One-way from

$39
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$178
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Miami flight deals.
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Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Miami flights.
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From Atlanta Hartsfield-Jackson to Key Largo
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One-way flight from Atlanta Hartsfield-Jackson to Key Largo
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Highest demand for flights based on searches. 11% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 March 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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.
Tue 4/86:00 amATL - MIA
Nonstop1h 54mSpirit Airlines
Wed 4/238:58 amMIA - ATL
Nonstop2h 00mSpirit Airlines
Deal found 3/24$67
This Flightnetwork deal was found by Cheapflights users on 3/23. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/126:32 amATL - MIA
Nonstop1h 59mMultiple Airlines
Tue 4/158:58 amMIA - ATL
Nonstop2h 00mMultiple Airlines
Deal found 3/23$74
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:05 amATL - MIA
Nonstop1h 59mFrontier
Sat 4/269:04 amMIA - ATL
Nonstop2h 14mFrontier
Deal found 3/23$78
This Delta deal was found by Cheapflights users on 3/24. 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.
Tue 4/810:30 amATL - MIA
Nonstop1h 55mDelta
Tue 4/84:47 pmMIA - ATL
Nonstop2h 05mDelta
Deal found 3/24$157
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Thu 4/175:37 amATL - MIA
Nonstop1h 58mAmerican Airlines
Mon 4/2110:30 pmMIA - ATL
Nonstop2h 00mAmerican Airlines
Deal found 3/24$179

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 March 25, 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

Tue 4/8

6:00 am-7:54 am

Nonstop1h 54m

Miami

Wed 4/23

8:58 am-10:58 am

Nonstop2h 00m

$67

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sat 4/12

6:32 am-8:31 am

Nonstop1h 59m

Miami

Tue 4/15

8:58 am-10:58 am

Nonstop2h 00m

$74

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sat 4/19

6:05 am-8:04 am

Nonstop1h 59m

Miami

Sat 4/26

9:04 am-11:18 am

Nonstop2h 14m

$78

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Tue 4/8

10:30 am-12:25 pm

Nonstop1h 55m

Miami

Tue 4/8

4:47 pm-6:52 pm

Nonstop2h 05m

$157

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Thu 4/17

5:37 am-7:35 am

Nonstop1h 58m

Miami

Mon 4/21

10:30 pm-12:30 am

Nonstop2h 00m

$179

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Tue 6/17

7:55 pm-10:04 pm

Nonstop2h 09m

$39

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Tue 4/29

7:15 am-8:25 pm

1 stop13h 10m

$41

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Tue 4/15

5:50 pm-7:48 pm

Nonstop1h 58m

$79

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Wed 5/7

3:40 pm-9:35 pm

1 stop5h 55m

$89

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 4/20

6:45 am-2:55 pm

1 stop8h 10m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 12 results
1
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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 March 21, 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, September is the cheapest month in which you can book a flight from Atlanta to Key Largo (average of $229). Flying from Atlanta to Key Largo in March is currently the most expensive (average of $289). 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 March 25, 2025.

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

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 Wednesday evenings when fares are most often at their lowest. Wednesday mornings 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 March 25, 2025.

The most flights from ATL to KE9 are scheduled on a Monday (76 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (38 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 March 25, 2025.
To help decide which airline to fly from Atlanta to Key Largo, see what other customers have to say about Southwest, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

7.6

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

7.6

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

7.6

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

7.6

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

7.6

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
7,878 reviews
Southwest
8.0
Very good
4,272 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

7.6

Food

7.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 62 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?

    This flight path from Atlanta Hartsfield-Jackson to Key Largo was viewed by 389 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $39. Users have also found prices from $41 and $79 on Spirit Airlines and Delta, 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 Envoy Air (89%), GOL (86%) or Qatar Airways (83%) 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 $38. While the most popular route (Atlanta Hartsfield-Jackson - Miami) can be booked for $56 on average our data indicates $988 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, September is the cheapest month in which you can book a flight from Atlanta to Key Largo (average of $229). Flying from Atlanta to Key Largo in March is currently the most expensive (average of $289). 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.

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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$42Average$119FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$51Average$111FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$68Average$114FlexibilityNo cancel feeOn-time62%
DeltaCheapest$102Average$314FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$152Average$336FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$172Average$284FlexibilityNo cancel feeOn-time63%
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