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Key Largo

$35+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — MIA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October, booked 30 days in advance, depart on a Sunday or Saturday 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 October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$71
(Orbitz)

One-way from

$35
(Frontier)

Popular in

December

Cheapest in

September

Average price

$177
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. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 30, 2025.

This Orbitz deal was found by Cheapflights users on 10/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:00 amATL - MIA
Nonstop1h 58mSpirit Airlines
Wed 11/1912:17 pmMIA - ATL
1 stop11h 35mSpirit Airlines
Deal found 10/30$71
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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 11/1010:38 pmATL - MIA
Nonstop1h 56mFrontier
Thu 11/206:21 pmMIA - ATL
Nonstop2h 14mFrontier
Deal found 10/30$72
This Priceline deal was found by Cheapflights users on 10/30. 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.
Thu 11/209:23 amATL - MIA
Nonstop2h 00mMultiple Airlines
Sun 11/235:30 amMIA - ATL
Nonstop2h 14mMultiple Airlines
Deal found 10/30$73
This Frontier deal was found by Cheapflights users on 10/28. 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.
Fri 11/289:40 pmATL - MIA
Nonstop2h 00mFrontier
Tue 12/25:58 pmMIA - ATL
Nonstop2h 23mFrontier
Deal found 10/28$74
This CheapOair deal was found by Cheapflights users on 10/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/281:29 pmATL - MIA
Nonstop1h 56mFrontier
Sun 12/75:30 amMIA - ATL
Nonstop2h 13mFrontier
Deal found 10/28$75
This CheapOair deal was found by Cheapflights users on 10/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:10 pmATL - MIA
Nonstop1h 59mFrontier
Mon 11/245:30 amMIA - ATL
Nonstop2h 14mFrontier
Deal found 10/30$76
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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 11/149:00 amATL - MIA
Nonstop2h 00mSpirit Airlines
Sat 11/155:27 pmMIA - ATL
1 stop6h 25mSpirit Airlines
Deal found 10/30$77
This Frontier deal was found by Cheapflights users on 10/30. 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.
Wed 12/2410:46 pmATL - MIA
Nonstop2h 01mFrontier
Mon 1/510:19 pmMIA - ATL
Nonstop2h 15mFrontier
Deal found 10/30$78
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 12/49:07 amATL - MIA
Nonstop2h 05mSpirit Airlines
Mon 12/86:05 amMIA - ATL
Nonstop1h 57mSpirit Airlines
Deal found 10/28$79
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Sat 11/158:00 amATL - MIA
Nonstop1h 58mMultiple Airlines
Mon 11/178:25 amMIA - ATL
1 stop8h 31mMultiple Airlines
Deal found 10/28$80
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 11/510:32 amATL - MIA
Nonstop1h 57mFrontier
Fri 11/75:01 amMIA - ATL
Nonstop2h 12mFrontier
Deal found 10/28$81
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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 11/1310:38 pmATL - MIA
Nonstop1h 56mFrontier
Mon 11/178:00 amMIA - ATL
1 stop27h 06mFrontier
Deal found 10/30$82

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 October 30, 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

Wed 12/3

6:25 pm-9:50 pm

1 stop3h 25m

Miami

Sat 12/6

6:20 am-2:00 pm

2 stops7h 40m

$172

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Mon 11/17

6:15 am-1:05 pm

1 stop6h 50m

Miami

Tue 11/18

11:40 am-10:15 pm

2 stops10h 35m

$176

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Thu 11/27

3:25 pm-5:18 pm

Nonstop1h 53m

Miami

Sun 12/7

7:00 am-9:08 am

Nonstop2h 08m

$188

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Wed 1/7

6:30 pm-10:00 pm

1 stop3h 30m

Miami

Wed 1/14

6:55 am-5:20 pm

2 stops10h 25m

$189

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Sun 12/14

6:35 pm-10:05 pm

1 stop3h 30m

Miami

Thu 12/18

6:55 am-10:30 am

1 stop3h 35m

$197

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Wed 11/19

11:10 am-7:50 pm

2 stops8h 40m

Miami

Thu 11/20

1:05 pm-8:55 pm

1 stop7h 50m

$222

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Mon 12/15

1:05 pm-9:50 pm

2 stops8h 45m

Miami

Mon 12/22

6:30 am-2:25 pm

2 stops7h 55m

$229

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Thu 11/13

7:30 am-9:23 am

Nonstop1h 53m

Miami

Mon 11/17

6:00 am-8:04 am

Nonstop2h 04m

$239

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Wed 11/5

11:55 am-9:50 pm

2 stops9h 55m

Miami

Sat 11/8

6:50 am-12:55 pm

1 stop6h 05m

$242

AtlantaMiami

ATL - MIA

ATLMIA

Atlanta Hartsfield-Jackson

Mon 11/10

3:35 pm-11:25 pm

2 stops7h 50m

Miami

Tue 11/18

11:40 am-10:15 pm

2 stops10h 35m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 23 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 October 24, 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, January is the cheapest month in which you can book a flight from Atlanta to Key Largo (average of $47). 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 October 30, 2025.

It’s optimal to fly from Atlanta to Key Largo in the afternoon. By choosing this option you can save up to 55% 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.

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 October 30, 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.
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
Spirit Airlines
6.3
Okay
8,116 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

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 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 27 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 395 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Airlines like Southwest and Delta fly from Atlanta to Key Largo in about 1h 53m. The time it takes to get you to your destination can typically vary by up to 1h 32m. 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 $69. Users have also found prices from $76 and $81 on Southwest and Spirit 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 (90%), Republic Airways (88%) or British Airways (82%) 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 $34. While the most popular route (Atlanta Hartsfield-Jackson - Miami) can be booked for $49 on average, our data indicates $606 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, January is the cheapest month in which you can book a flight from Atlanta to Key Largo (average of $47). 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

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$134FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$60Average$137FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$95Average$177FlexibilityNo cancel feeOn-time62%
DeltaCheapest$117Average$328FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$162Average$361FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$311FlexibilityNo cancel feeOn-time63%

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