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$45+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — ATL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Atlanta Hartsfield-Jackson are usually found in September or February, booked 82 days in advance, depart on a Saturday or Thursday and return on a Sunday

Cheap 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 September 15, 2025.

Round-trip from

$76
(Priceline)

One-way from

$45
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$127
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. 6% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This Priceline deal was found by Cheapflights users on 9/15. 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.
Mon 9/295:30 amMIA - ATL
Nonstop2h 12mMultiple Airlines
Thu 10/210:19 amATL - MIA
Nonstop2h 03mMultiple Airlines
Deal found 9/15$76
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1810:00 amMIA - ATL
Nonstop2h 17mFrontier
Sun 10/1910:38 pmATL - MIA
Nonstop1h 56mFrontier
Deal found 9/14$77
This Priceline deal was found by Cheapflights users on 9/13. 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.
Mon 9/295:30 amMIA - ATL
Nonstop2h 12mFrontier
Mon 9/2910:13 pmATL - MIA
Nonstop1h 59mFrontier
Deal found 9/13$78
This Frontier deal was found by Cheapflights users on 9/13. 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.
Fri 10/175:15 amMIA - ATL
Nonstop2h 12mFrontier
Sun 10/1910:38 pmATL - MIA
Nonstop1h 56mFrontier
Deal found 9/13$79
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:57 pmMIA - ATL
Nonstop2h 19mFrontier
Fri 10/310:13 pmATL - MIA
Nonstop1h 59mFrontier
Deal found 9/15$80
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:30 amMIA - ATL
Nonstop2h 12mFrontier
Tue 10/77:48 pmATL - MIA
Nonstop2h 01mFrontier
Deal found 9/14$81
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:30 amMIA - ATL
Nonstop2h 12mFrontier
Wed 9/243:12 pmATL - MIA
Nonstop2h 03mFrontier
Deal found 9/14$82
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:29 amMIA - ATL
Nonstop1h 58mSpirit Airlines
Thu 10/93:03 pmATL - MIA
Nonstop1h 58mSpirit Airlines
Deal found 9/15$83
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:25 pmMIA - ATL
Nonstop2h 19mFrontier
Sat 10/42:29 pmATL - MIA
Nonstop2h 01mFrontier
Deal found 9/15$84
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:15 amMIA - ATL
Nonstop2h 12mFrontier
Sun 10/1210:38 pmATL - MIA
Nonstop1h 56mFrontier
Deal found 9/15$85
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:15 amMIA - ATL
Nonstop2h 12mFrontier
Sun 10/2610:38 pmATL - MIA
Nonstop1h 56mFrontier
Deal found 9/15$87

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 September 15, 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

Fri 9/26

5:30 am-7:42 am

Nonstop2h 12m

Atlanta Hartsfield-Jackson

Mon 9/29

8:44 am-5:46 pm

1 stop9h 02m

$126

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Wed 10/22

7:55 am-3:00 pm

1 stop7h 05m

Atlanta Hartsfield-Jackson

Fri 10/24

6:35 pm-10:05 pm

1 stop3h 30m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Thu 10/23

7:05 am-10:30 am

1 stop3h 25m

Atlanta Hartsfield-Jackson

Mon 10/27

6:35 pm-10:05 pm

1 stop3h 30m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Wed 10/29

1:55 pm-8:25 pm

1 stop6h 30m

Atlanta Hartsfield-Jackson

Wed 11/5

6:25 pm-9:50 pm

1 stop3h 25m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Tue 10/14

7:55 am-3:00 pm

1 stop7h 05m

Atlanta Hartsfield-Jackson

Thu 10/16

6:35 pm-10:05 pm

1 stop3h 30m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Tue 10/14

7:55 am-3:00 pm

1 stop7h 05m

Atlanta Hartsfield-Jackson

Fri 10/24

6:35 pm-10:05 pm

1 stop3h 30m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Sat 11/8

5:05 pm-9:00 pm

1 stop3h 55m

Atlanta Hartsfield-Jackson

Sun 11/9

4:35 pm-11:45 pm

1 stop7h 10m

$151

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Tue 10/21

5:30 pm-9:05 pm

1 stop3h 35m

Atlanta Hartsfield-Jackson

Thu 10/23

3:55 pm-10:05 pm

2 stops6h 10m

$156

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Sat 10/4

5:25 pm-9:20 pm

1 stop3h 55m

Atlanta Hartsfield-Jackson

Tue 10/7

1:20 pm-9:55 pm

2 stops8h 35m

$156

MiamiAtlanta

MIA - ATL

MIAATL

Miami

Fri 10/24

6:00 am-8:00 am

Nonstop2h 00m

Atlanta Hartsfield-Jackson

Sun 10/26

7:45 am-9:35 am

Nonstop1h 50m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 18 results
1
2

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 September 12, 2025.

Booking 82 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, August is the cheapest month in which you can book a flight from Key Largo to Atlanta (average of $190). Flying from Key Largo to Atlanta in June is currently the most expensive (average of $246). 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 September 15, 2025.

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

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 September 14, 2025.

Travelers seeking maximum savings on their Key Largo to Atlanta flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday 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 September 15, 2025.

The most flights from KE9 to ATL are scheduled on a Friday (69 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 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 September 15, 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
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
8,015 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

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 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 54 inbound flights from Key Largo per day. You should also have plenty of airline options to choose from since 5 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, 146 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 $126, Frontier can have you in Atlanta from Key Largo in 2h 12m. The distance between Key Largo and Atlanta is about 596 mi. This flight may include one or multiple stops.

  • 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: Frontier (75%), Korean Air (72%), Aeromexico (67%).

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

    The cheapest flight price from Key Largo to Atlanta is $47. On average you can expect to pay $603. The most popular route, (Miami - Atlanta Hartsfield-Jackson), can usually be booked for $73.

  • 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, August is the cheapest month in which you can book a flight from Key Largo to Atlanta (average of $190). Flying from Key Largo to Atlanta in June is currently the most expensive (average of $246). 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
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Top 5 airlines flying from Key Largo to Atlanta

Discover the top 5 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$123FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$56Average$121FlexibilityNo cancel feeOn-time65%
DeltaCheapest$142Average$312FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$157Average$255FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$168Average$267FlexibilityNo cancel feeOn-time63%

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