$73+ Cheap flights from Jacksonville (JAX) 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — MIA
Jul 23 — Jul 301
Round-trip
1 adult, Economy
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Find cheap flights from Jacksonville 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 Jacksonville to Key Largo are usually found in August or July, booked 60 days in advance, depart on a Friday or Sunday and return on a Saturday
Cheap flight deals from Jacksonville to Key Largo
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Cheapest flights from Jacksonville to Key LargoExplore the most affordable flight options available from Jacksonville to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2026.
Explore the most affordable flight options available from Jacksonville to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 8/16:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Mon 8/38:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/21![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/226:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Wed 7/2911:19 am
MIA
- JAX
1 stop6h 15m
Frontier
Deal found 6/22![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Thu 7/166:29 pm
JAX
- MIA
1 stop22h 04m
Frontier
Thu 7/238:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/18![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Fri 7/176:29 pm
JAX
- MIA
1 stop26h 00m
Frontier
Sat 7/255:54 pm
MIA
- JAX
1 stop23h 40m
Frontier
Deal found 6/22![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Fri 8/287:05 pm
JAX
- MIA
1 stop25h 24m
Frontier
Sun 9/68:10 am
MIA
- JAX
1 stop10h 00m
Frontier
Deal found 6/22![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Sun 7/126:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Sat 7/188:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/18![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 9/57:05 pm
JAX
- MIA
1 stop21h 16m
Frontier
Mon 9/1410:09 pm
MIA
- JAX
1 stop19h 42m
Frontier
Deal found 6/22![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Fri 9/256:46 pm
JAX
- MIA
1 stop14h 12m
Frontier
Mon 9/2810:09 pm
MIA
- JAX
1 stop19h 42m
Frontier
Deal found 6/21![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 9/306:46 pm
JAX
- MIA
1 stop17h 19m
Frontier
Tue 10/137:00 am
MIA
- JAX
1 stop10h 51m
Frontier
Deal found 6/19![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/256:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Mon 7/275:28 pm
MIA
- JAX
1 stop24h 06m
Frontier
Deal found 6/21![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Sun 7/126:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Fri 7/175:28 pm
MIA
- JAX
1 stop24h 06m
Frontier
Deal found 6/22![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/116:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Mon 7/135:28 pm
MIA
- JAX
1 stop24h 06m
Frontier
Deal found 6/21![Frontier logo]()
$166
Best flights from Jacksonville to Key LargoDiscover carefully curated flight deals from Jacksonville to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 23, 2026.
Discover carefully curated flight deals from Jacksonville to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 23, 2026.
This Delta deal was found by Cheapflights users on 6/19. 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.
Fri 7/35:38 pm
JAX
- MIA
1 stop7h 13m
Delta
Sat 7/47:16 pm
MIA
- JAX
1 stop4h 43m
Delta
Deal found 6/19![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 6/22. 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 9/2211:00 am
JAX
- MIA
2 stops10h 50m
Southwest
Sat 9/266:30 am
MIA
- JAX
2 stops9h 30m
Southwest
Deal found 6/22![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 6/22. 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.
Wed 7/85:30 am
JAX
- MIA
1 stop4h 00m
Delta
Wed 7/86:00 pm
MIA
- JAX
1 stop6h 09m
Delta
Deal found 6/22![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 6/22. 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 7/151:55 pm
JAX
- MIA
2 stops8h 20m
Southwest
Wed 8/127:10 am
MIA
- JAX
2 stops9h 35m
Southwest
Deal found 6/22![Southwest logo]()
$301
This Southwest deal was found by Cheapflights users on 6/18. 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 8/266:15 am
JAX
- MIA
2 stops9h 15m
Southwest
Sat 8/297:00 am
MIA
- JAX
2 stops11h 00m
Southwest
Deal found 6/18![Southwest logo]()
$313
This Southwest deal was found by Cheapflights users on 6/22. 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 7/228:25 am
JAX
- MIA
2 stops7h 25m
Southwest
Wed 7/296:00 am
MIA
- JAX
2 stops10h 10m
Southwest
Deal found 6/22![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 6/20. 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 8/226:15 am
JAX
- MIA
2 stops7h 50m
Southwest
Sun 8/306:45 am
MIA
- JAX
2 stops6h 35m
Southwest
Deal found 6/20![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 6/22. 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 10/236:15 am
JAX
- MIA
2 stops9h 15m
Southwest
Sat 10/315:55 am
MIA
- JAX
2 stops9h 55m
Southwest
Deal found 6/22![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 6/21. 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 8/111:55 am
JAX
- MIA
2 stops10h 15m
Southwest
Mon 8/37:15 am
MIA
- JAX
2 stops9h 00m
Southwest
Deal found 6/21![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 6/22. 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 10/157:45 am
JAX
- MIA
1 stop6h 45m
Southwest
Sun 10/185:25 am
MIA
- JAX
2 stops9h 40m
Southwest
Deal found 6/22![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 6/22. 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 9/247:25 am
JAX
- MIA
2 stops8h 45m
Southwest
Sun 9/276:45 am
MIA
- JAX
2 stops6h 35m
Southwest
Deal found 6/22![Southwest logo]()
$354
This Southwest deal was found by Cheapflights users on 6/19. 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 10/225:10 am
JAX
- MIA
2 stops9h 45m
Southwest
Mon 10/267:00 am
MIA
- JAX
2 stops8h 50m
Southwest
Deal found 6/19![Southwest logo]()
$354
Last-minute flights from Jacksonville to Key LargoDiscover last-minute flight deals from Jacksonville to Key Largo. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Key Largo. Data last updated June 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Sun 7/56:29 pm
JAX
- MIA
1 stop22h 04m
Frontier
Sat 7/113:07 pm
MIA
- JAX
1 stop26h 27m
Frontier
Deal found 6/19![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/86:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Sat 7/118:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/18![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/116:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Mon 7/135:28 pm
MIA
- JAX
1 stop24h 06m
Frontier
Deal found 6/21![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Sun 7/126:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Sat 7/188:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/18![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Sun 7/126:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Fri 7/175:28 pm
MIA
- JAX
1 stop24h 06m
Frontier
Deal found 6/22![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Thu 7/166:29 pm
JAX
- MIA
1 stop22h 04m
Frontier
Thu 7/238:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/18![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Fri 7/176:29 pm
JAX
- MIA
1 stop26h 00m
Frontier
Sat 7/255:54 pm
MIA
- JAX
1 stop23h 40m
Frontier
Deal found 6/22![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Fri 7/176:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Mon 7/208:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/22![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/186:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Wed 7/2211:19 am
MIA
- JAX
1 stop6h 15m
Frontier
Deal found 6/20![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/226:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Wed 7/2911:19 am
MIA
- JAX
1 stop6h 15m
Frontier
Deal found 6/22![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/256:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Mon 7/275:28 pm
MIA
- JAX
1 stop24h 06m
Frontier
Deal found 6/21![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/296:29 pm
JAX
- MIA
1 stop28h 36m
Frontier
Sun 8/28:30 am
MIA
- JAX
1 stop9h 04m
Frontier
Deal found 6/18![Frontier logo]()
$180
One-way flights from Jacksonville to Key LargoSearch for one-way flight options from Jacksonville to Key Largo. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
Search for one-way flight options from Jacksonville to Key Largo. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Mon 7/276:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Deal found 6/21![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/186:29 pm
JAX
- MIA
1 stop5h 11m
Frontier
Deal found 6/20![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:29 pm
JAX
- MIA
1 stop19h 24m
Frontier
Deal found 6/23![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Thu 7/166:29 pm
JAX
- MIA
1 stop28h 36m
Frontier
Deal found 6/21![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Mon 8/176:29 pm
JAX
- MIA
1 stop19h 03m
Frontier
Deal found 6/20![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Mon 9/146:46 pm
JAX
- MIA
1 stop14h 12m
Frontier
Deal found 6/19![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 9/156:46 pm
JAX
- MIA
1 stop26h 18m
Frontier
Deal found 6/21![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/156:29 pm
JAX
- MIA
1 stop28h 36m
Frontier
Deal found 6/20![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Thu 8/207:05 pm
JAX
- MIA
1 stop21h 16m
Frontier
Deal found 6/20![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Fri 7/36:28 pm
JAX
- MIA
1 stop23h 28m
Frontier
Deal found 6/20![Frontier logo]()
$112
Find flight deals from Jacksonville to Key Largo
Keep the following information in mind while searching for Jacksonville to Key Largo flight deals. Data was last updated June 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 (Kiwi.com) |
One-way from | $73 (Kiwi.com) |
Popular in | September |
Cheapest in | August |
Average price | $578 |
Cheapflights Fare Finder
Customize your flight search to find flights from Jacksonville 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 June 23, 2026.
Use the filters below to find and compare flights from Jacksonville to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Fri 7/3
5:38 pm-12:51 am
1 stop7h 13m
Miami
Sat 7/4
7:16 pm-11:59 pm
1 stop4h 43m
$247
Quickest round-trip
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Wed 7/8
5:30 am-9:30 am
1 stop4h 00m
Miami
Wed 7/8
6:00 pm-12:09 am
1 stop6h 09m
$247
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Tue 9/22
11:00 am-9:50 pm
2 stops10h 50m
Miami
Sat 9/26
6:30 am-4:00 pm
2 stops9h 30m
$301
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Wed 7/15
1:55 pm-10:15 pm
2 stops8h 20m
Miami
Wed 8/12
7:10 am-4:45 pm
2 stops9h 35m
$301
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Wed 8/26
6:15 am-3:30 pm
2 stops9h 15m
Miami
Sat 8/29
7:00 am-6:00 pm
2 stops11h 00m
$313
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Wed 7/22
8:25 am-3:50 pm
2 stops7h 25m
Miami
Wed 7/29
6:00 am-4:10 pm
2 stops10h 10m
$342
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Sat 8/22
6:15 am-2:05 pm
2 stops7h 50m
Miami
Sun 8/30
6:45 am-1:20 pm
2 stops6h 35m
$342
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Fri 10/23
6:15 am-3:30 pm
2 stops9h 15m
Miami
Sat 10/31
5:55 am-3:50 pm
2 stops9h 55m
$342
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Sat 8/1
11:55 am-10:10 pm
2 stops10h 15m
Miami
Mon 8/3
7:15 am-4:15 pm
2 stops9h 00m
$342
JacksonvilleMiami
JAX - MIA
JAXMIA
Jacksonville
Thu 10/15
7:45 am-2:30 pm
1 stop6h 45m
Miami
Sun 10/18
5:25 am-3:05 pm
2 stops9h 40m
$349
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Jacksonville to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from Jacksonville with our price prediction graph.
JAX-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 Jacksonville to Key Largo
JAX-KE9
JAX-MIA
What is the cheapest time of day to fly from JAX to KE9?
Find hourly flight availability from Jacksonville 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 June 23, 2026.
One of the essential ways to save on airfare from Jacksonville to Key Largo is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 44% on airfare.
Weekly flight availability from Jacksonville to Key Largo
Explore weekly flight availability from Jacksonville 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 June 23, 2026.
The most flights from JAX to KE9 are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Jacksonville to Key Largo?
What is the cheapest day to fly from Jacksonville to Key Largo?
Use this chart to determine the cheapest time to fly round-trip from Jacksonville to Key Largo. Price data was last updated on June 20, 2026.
Travelers seeking maximum savings on their Jacksonville to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday 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 June 23, 2026.
Get a feel of what it's like to fly with Southwest,American Airlines, andFrontier from Jacksonville 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.
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Jacksonville 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 Jacksonville to Key Largo
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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 Jacksonville to Key Largo by cabin class
Find flights from Jacksonville to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Jacksonville and Key Largo flights
Browse other Jacksonville and Key Largo flight options. Last updated on June 23, 2026.
Other flights from Jacksonville
Browse through other flights departing from Jacksonville. Flights are based on user searches made on Cheapflights and were last updated on June 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Jacksonville to Key Largo flights
Consider these flights traveling from Jacksonville to Key Largo.
Top 6 airlines flying from Jacksonville to Key Largo
Discover the top 6 airlines that operate flights from Jacksonville 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$108 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$153 | Average$227 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$160 | Average$244 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$217 | Average$451 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$217 | Average$374 | FlexibilityNo cancel fee | On-time63% |