$32+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — MIA
May 11 — May 181
Round-trip
1 adult, Economy
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Find cheap flights from Atlanta to Key Largo 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 Atlanta Hartsfield-Jackson to Key Largo are usually found in January or March, booked 30 days in advance, depart on a Saturday or Sunday and return on a Friday
Cheap flight deals from Atlanta to Key Largo
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Best
Last-minute
One-way
Cheapest flights from Atlanta to Key LargoExplore 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 April 11, 2026.
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 April 11, 2026.
This eDestinos deal was found by Cheapflights users on 4/8. 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.
Sun 4/2610:50 pm
ATL
- MIA
Nonstop1h 59m
Frontier
Tue 4/287:04 pm
MIA
- ATL
Nonstop2h 29m
Frontier
Deal found 4/8![Frontier logo]()
$69
This Booking.com deal was found by Cheapflights users on 4/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:50 pm
ATL
- MIA
Nonstop1h 59m
Frontier
Mon 4/275:05 am
MIA
- ATL
Nonstop2h 10m
Frontier
Deal found 4/10![Frontier logo]()
$70
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 4/308:10 am
ATL
- MIA
Nonstop2h 02m
Frontier
Sun 5/312:26 pm
MIA
- ATL
Nonstop2h 24m
Frontier
Deal found 4/6![Frontier logo]()
$71
This Booking.com deal was found by Cheapflights users on 4/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Mon 4/273:54 pm
MIA
- ATL
Nonstop1h 58m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$72
This Super.com deal was found by Cheapflights users on 4/8. 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.
Sat 4/258:10 am
ATL
- MIA
Nonstop2h 02m
Frontier
Sat 5/27:04 pm
MIA
- ATL
Nonstop2h 29m
Frontier
Deal found 4/8![Frontier logo]()
$73
This Super.com deal was found by Cheapflights users on 4/6. 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.
Fri 5/82:29 pm
ATL
- MIA
Nonstop1h 58m
Frontier
Sun 5/1011:23 am
MIA
- ATL
Nonstop2h 11m
Frontier
Deal found 4/6![Frontier logo]()
$74
This Orbitz deal was found by Cheapflights users on 4/8. 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.
Sun 4/197:00 am
ATL
- MIA
Nonstop1h 55m
Spirit Airlines
Wed 4/223:54 pm
MIA
- ATL
Nonstop1h 58m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$75
This Super.com deal was found by Cheapflights users on 4/10. 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 4/208:10 am
ATL
- MIA
Nonstop2h 02m
Frontier
Wed 4/2211:10 am
MIA
- ATL
Nonstop2h 16m
Frontier
Deal found 4/10![Frontier logo]()
$76
This Priceline deal was found by Cheapflights users on 4/8. 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.
Fri 5/13:52 pm
ATL
- MIA
Nonstop2h 05m
Multiple Airlines
Sun 5/33:54 pm
MIA
- ATL
Nonstop1h 58m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$77
This Frontier deal was found by Cheapflights users on 4/6. 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.
Thu 4/234:16 pm
ATL
- MIA
Nonstop2h 03m
Frontier
Sun 4/267:21 pm
MIA
- ATL
Nonstop2h 29m
Frontier
Deal found 4/6![Frontier logo]()
$78
This Priceline deal was found by Cheapflights users on 4/7. 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 5/1811:20 am
ATL
- MIA
Nonstop2h 00m
Multiple Airlines
Thu 5/2111:06 am
MIA
- ATL
Nonstop2h 02m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$79
This Cheapflightsfares deal was found by Cheapflights users on 4/8. 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 5/18:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Sun 5/312:53 pm
MIA
- ATL
Nonstop1h 58m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$80
Best flights from Atlanta to Key LargoDiscover carefully curated flight deals from Atlanta to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2026.
Discover carefully curated flight deals from Atlanta to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2026.
This Southwest deal was found by Cheapflights users on 4/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/159:45 am
ATL
- MIA
1 stop5h 50m
Southwest
Wed 6/173:05 pm
MIA
- ATL
1 stop7h 55m
Southwest
Deal found 4/10![Southwest logo]()
$151
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/92:45 pm
ATL
- MIA
2 stops7h 25m
Southwest
Tue 6/164:20 pm
MIA
- ATL
1 stop4h 45m
Southwest
Deal found 4/6![Southwest logo]()
$156
This Southwest deal was found by Cheapflights users on 4/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/169:05 am
ATL
- MIA
1 stop5h 05m
Southwest
Sat 5/307:00 am
MIA
- ATL
1 stop7h 15m
Southwest
Deal found 4/7![Southwest logo]()
$159
This Southwest deal was found by Cheapflights users on 4/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/83:30 pm
ATL
- MIA
2 stops6h 30m
Southwest
Sun 5/106:30 am
MIA
- ATL
1 stop5h 30m
Southwest
Deal found 4/7![Southwest logo]()
$184
This Southwest deal was found by Cheapflights users on 4/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/276:15 pm
ATL
- MIA
1 stop3h 50m
Southwest
Wed 7/15:10 pm
MIA
- ATL
1 stop6h 00m
Southwest
Deal found 4/11![Southwest logo]()
$199
This Southwest deal was found by Cheapflights users on 4/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:30 pm
ATL
- MIA
1 stop6h 30m
Southwest
Mon 6/15:45 pm
MIA
- ATL
1 stop3h 55m
Southwest
Deal found 4/9![Southwest logo]()
$215
This Southwest deal was found by Cheapflights users on 4/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/242:45 pm
ATL
- MIA
2 stops7h 25m
Southwest
Fri 7/105:35 am
MIA
- ATL
1 stop4h 00m
Southwest
Deal found 4/10![Southwest logo]()
$220
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/158:00 am
ATL
- MIA
2 stops8h 25m
Southwest
Tue 6/164:20 pm
MIA
- ATL
1 stop4h 45m
Southwest
Deal found 4/6![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 4/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:30 pm
ATL
- MIA
2 stops6h 30m
Southwest
Fri 6/55:35 am
MIA
- ATL
2 stops9h 25m
Southwest
Deal found 4/7![Southwest logo]()
$248
This Southwest deal was found by Cheapflights users on 4/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:45 am
ATL
- MIA
1 stop5h 10m
Southwest
Mon 9/2812:05 pm
MIA
- ATL
1 stop6h 35m
Southwest
Deal found 4/9![Southwest logo]()
$280
This Southwest deal was found by Cheapflights users on 4/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/510:45 pm
ATL
- MIA
1 stop12h 15m
Southwest
Sun 7/125:35 am
MIA
- ATL
1 stop4h 00m
Southwest
Deal found 4/10![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 4/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/303:30 pm
ATL
- MIA
2 stops6h 30m
Southwest
Sun 5/36:10 am
MIA
- ATL
2 stops14h 00m
Southwest
Deal found 4/6![Southwest logo]()
$312
Last-minute flights from Atlanta to Key LargoDiscover last-minute flight deals from Atlanta to Key Largo. Data last updated April 11, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Key Largo. Data last updated April 11, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 4/8. 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.
Sun 4/197:00 am
ATL
- MIA
Nonstop1h 55m
Spirit Airlines
Wed 4/223:54 pm
MIA
- ATL
Nonstop1h 58m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$75
This Trip.com deal was found by Cheapflights users on 4/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:37 pm
ATL
- MIA
Nonstop1h 54m
Multiple Airlines
Tue 4/281:05 pm
MIA
- ATL
Nonstop2h 14m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$76
This Booking.com deal was found by Cheapflights users on 4/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Mon 4/273:54 pm
MIA
- ATL
Nonstop1h 58m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$72
This Frontier deal was found by Cheapflights users on 4/6. 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.
Thu 4/234:16 pm
ATL
- MIA
Nonstop2h 03m
Frontier
Sun 4/267:21 pm
MIA
- ATL
Nonstop2h 29m
Frontier
Deal found 4/6![Frontier logo]()
$78
This Booking.com deal was found by Cheapflights users on 4/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:50 pm
ATL
- MIA
Nonstop1h 59m
Frontier
Mon 4/275:05 am
MIA
- ATL
Nonstop2h 10m
Frontier
Deal found 4/10![Frontier logo]()
$70
This Super.com deal was found by Cheapflights users on 4/8. 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.
Sat 4/258:10 am
ATL
- MIA
Nonstop2h 02m
Frontier
Sat 5/27:04 pm
MIA
- ATL
Nonstop2h 29m
Frontier
Deal found 4/8![Frontier logo]()
$73
This eDestinos deal was found by Cheapflights users on 4/8. 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.
Sun 4/2610:50 pm
ATL
- MIA
Nonstop1h 59m
Frontier
Tue 4/287:04 pm
MIA
- ATL
Nonstop2h 29m
Frontier
Deal found 4/8![Frontier logo]()
$69
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 4/304:16 pm
ATL
- MIA
Nonstop2h 03m
Frontier
Sun 5/312:26 pm
MIA
- ATL
Nonstop2h 24m
Frontier
Deal found 4/6![Frontier logo]()
$71
This Priceline deal was found by Cheapflights users on 4/8. 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.
Fri 5/13:52 pm
ATL
- MIA
Nonstop2h 05m
Multiple Airlines
Sun 5/33:54 pm
MIA
- ATL
Nonstop1h 58m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$77
This Cheapflightsfares deal was found by Cheapflights users on 4/8. 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 5/18:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Sun 5/312:53 pm
MIA
- ATL
Nonstop1h 58m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$80
This Super.com deal was found by Cheapflights users on 4/6. 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.
Fri 5/82:29 pm
ATL
- MIA
Nonstop1h 58m
Frontier
Sun 5/1011:23 am
MIA
- ATL
Nonstop2h 11m
Frontier
Deal found 4/6![Frontier logo]()
$74
This Priceline deal was found by Cheapflights users on 4/7. 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 5/1811:20 am
ATL
- MIA
Nonstop2h 00m
Multiple Airlines
Thu 5/2111:06 am
MIA
- ATL
Nonstop2h 02m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$79
One-way flights from Atlanta to Key LargoSearch for one-way flight options from Atlanta to Key Largo. Find affordable one-way fares based on user searches. Data last updated April 11, 2026.
Search for one-way flight options from Atlanta to Key Largo. Find affordable one-way fares based on user searches. Data last updated April 11, 2026.
This Spirit deal was found by Cheapflights users on 4/8. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$32
This Super.com deal was found by Cheapflights users on 4/10. 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 4/2210:50 pm
ATL
- MIA
Nonstop1h 59m
Frontier
Deal found 4/10![Frontier logo]()
$33
This Frontier deal was found by Cheapflights users on 4/6. 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 6/92:29 pm
ATL
- MIA
Nonstop2h 02m
Frontier
Deal found 4/6![Frontier logo]()
$34
This CheapOair deal was found by Cheapflights users on 4/7. 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.
Wed 4/298:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Deal found 4/7![Spirit Airlines logo]()
$35
This Kiwi.com deal was found by Cheapflights users on 4/8. 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 5/268:45 pm
ATL
- MIA
Nonstop2h 02m
Frontier
Deal found 4/8![Frontier logo]()
$36
This Super.com deal was found by Cheapflights users on 4/8. 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.
Fri 5/88:45 pm
ATL
- MIA
Nonstop2h 02m
Frontier
Deal found 4/8![Frontier logo]()
$37
This Booking.com deal was found by Cheapflights users on 4/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:52 pm
ATL
- MIA
Nonstop2h 05m
Frontier
Deal found 4/7![Frontier logo]()
$38
This Frontier deal was found by Cheapflights users on 4/7. 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.
Thu 6/118:55 pm
ATL
- MIA
Nonstop2h 08m
Frontier
Deal found 4/7![Frontier logo]()
$39
This Frontier deal was found by Cheapflights users on 4/10. 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 4/188:10 am
ATL
- MIA
Nonstop2h 02m
Frontier
Deal found 4/10![Frontier logo]()
$40
This eDestinos deal was found by Cheapflights users on 4/8. 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.
Thu 6/258:55 pm
ATL
- MIA
Nonstop2h 08m
Frontier
Deal found 4/8![Frontier logo]()
$42
This Cheapflightsfares deal was found by Cheapflights users on 4/8. 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 4/178:37 pm
ATL
- MIA
Nonstop1h 54m
Spirit Airlines
Deal found 4/8![Spirit Airlines logo]()
$43
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 April 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $69 (eDestinos) |
One-way from | $32 (Spirit) |
Popular in | June |
Cheapest in | January |
Average price | $183 |
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 April 11, 2026.
Use the filters below to find and compare flights from Atlanta to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Mon 6/15
9:45 am-3:35 pm
1 stop5h 50m
Miami
Wed 6/17
3:05 pm-11:00 pm
1 stop7h 55m
$151
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Tue 6/9
2:45 pm-10:10 pm
2 stops7h 25m
Miami
Tue 6/16
4:20 pm-9:05 pm
1 stop4h 45m
$156
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Sat 5/16
9:05 am-2:10 pm
1 stop5h 05m
Miami
Sat 5/30
7:00 am-2:15 pm
1 stop7h 15m
$159
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Fri 5/8
3:30 pm-10:00 pm
2 stops6h 30m
Miami
Sun 5/10
6:30 am-12:00 pm
1 stop5h 30m
$184
Quickest round-trip
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Sat 6/27
6:15 pm-10:05 pm
1 stop3h 50m
Miami
Wed 7/1
5:10 pm-11:10 pm
1 stop6h 00m
$199
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Fri 5/29
4:30 pm-11:00 pm
1 stop6h 30m
Miami
Mon 6/1
5:45 pm-9:40 pm
1 stop3h 55m
$215
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Wed 6/24
2:45 pm-10:10 pm
2 stops7h 25m
Miami
Fri 7/10
5:35 am-9:35 am
1 stop4h 00m
$220
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Mon 6/15
8:00 am-4:25 pm
2 stops8h 25m
Miami
Tue 6/16
4:20 pm-9:05 pm
1 stop4h 45m
$237
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Fri 5/29
3:30 pm-10:00 pm
2 stops6h 30m
Miami
Fri 6/5
5:35 am-3:00 pm
2 stops9h 25m
$248
AtlantaMiami
ATL - MIA
ATLMIA
Atlanta Hartsfield-Jackson
Sat 9/19
8:45 am-1:55 pm
1 stop5h 10m
Miami
Mon 9/28
12:05 pm-6:40 pm
1 stop6h 35m
$280
Showing 1-10 of 24 resultsSorted by cheapest first
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.
ATL-MIA
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
ATL-KE9
ATL-MIA
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 April 9, 2026.
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 $49). 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 April 11, 2026.
It’s optimal to fly from Atlanta to Key Largo in the afternoon. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the evening.
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 April 11, 2026.
Travelers seeking maximum savings on their Atlanta to Key Largo flight should consider departing on Wednesday afternoons 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 April 11, 2026.
The most flights from ATL to KE9 are scheduled on a Friday (75 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (16 on average).
How much does it cost to fly round-trip from Atlanta to Key Largo?
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 April 11, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andAmerican 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.
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
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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.
Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Atlanta to Key Largo by cabin class
Find flights from Atlanta to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Atlanta and Key Largo flights
Browse other Atlanta and Key Largo flight options. Last updated on April 11, 2026.
Other flights from Atlanta
Browse through other flights departing from Atlanta. Flights are based on user searches made on Cheapflights and were last updated on April 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Atlanta to Key Largo flights
Consider these flights traveling from Atlanta to Key Largo.
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 April 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$172 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$54 | Average$177 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$56 | Average$126 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$95 | Average$385 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$101 | Average$316 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$196 | Average$361 | FlexibilityNo cancel fee | On-time63% |