$60+ Cheap flights from Jacksonville (JAX) to Key Largo, FL
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — MIA
Oct 8 — Oct 151
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 September, booked 60 days in advance, depart on a Saturday or Friday and return on a Saturday
Cheap flight deals from Jacksonville to Key Largo
Cheapest
Best
Last-minute
One-way
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 September 8, 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 September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 11/107:03 pm -
1 stop15h 26m
Sat 11/145:05 am -
1 stop13h 23m
Deal found 9/5![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/207:46 pm -
1 stop14h 29m
Sat 11/145:05 am -
1 stop13h 23m
Deal found 9/4![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/277:03 pm -
1 stop15h 26m
Tue 11/35:05 am -
1 stop13h 03m
Deal found 9/5![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:46 pm -
1 stop14h 29m
Mon 10/2610:55 pm -
1 stop19h 13m
Deal found 9/6![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:46 pm -
1 stop14h 29m
Sat 10/175:05 am -
1 stop13h 41m
Deal found 9/7![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/277:03 pm -
1 stop15h 26m
Mon 11/210:55 pm -
1 stop19h 13m
Deal found 9/4![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/287:03 pm -
1 stop15h 26m
Tue 11/35:05 am -
1 stop13h 03m
Deal found 9/4![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:46 pm -
1 stop14h 29m
Thu 10/155:15 am -
1 stop12h 10m
Deal found 9/7![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/127:46 pm -
1 stop14h 29m
Fri 10/1610:55 pm -
1 stop19h 51m
Deal found 9/3![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:46 pm -
1 stop14h 29m
Fri 10/2310:55 pm -
1 stop19h 51m
Deal found 9/7![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/226:20 pm -
1 stop27h 30m
Mon 10/2610:55 pm -
1 stop19h 13m
Deal found 9/4![Frontier logo]()
$131
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 September 8, 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 September 8, 2026.
This Southwest deal was found by Cheapflights users on 9/6. 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.
Sat 10/1711:50 am -
2 stops10h 20m
Sun 10/186:20 am -
1 stop7h 55m
Deal found 9/6![Southwest logo]()
$394
This Southwest deal was found by Cheapflights users on 9/3. 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 11/411:10 am -
2 stops11h 00m
Sun 11/87:05 am -
2 stops11h 20m
Deal found 9/3![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 9/5. 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 10/93:00 pm -
2 stops8h 10m
Sun 10/115:15 am -
1 stop8h 00m
Deal found 9/5![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 9/5. 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 10/93:00 pm -
2 stops8h 10m
Mon 10/127:10 am -
2 stops9h 20m
Deal found 9/5![Southwest logo]()
$456
This Southwest deal was found by Cheapflights users on 9/5. 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 9/1911:15 am -
2 stops8h 05m
Sun 9/205:50 am -
1 stop7h 15m
Deal found 9/5![Southwest logo]()
$504
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:30 am -
2 stops11h 50m
Mon 9/287:00 am -
2 stops7h 20m
Deal found 9/8![Southwest logo]()
$509
This Southwest deal was found by Cheapflights users on 9/7. 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 9/257:25 am -
2 stops8h 45m
Sun 9/276:45 am -
2 stops6h 35m
Deal found 9/7![Southwest logo]()
$509
This Southwest deal was found by Cheapflights users on 9/3. 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 10/13:00 pm -
1 stop7h 35m
Thu 10/87:10 am -
2 stops10h 40m
Deal found 9/3![Southwest logo]()
$517
This Southwest deal was found by Cheapflights users on 9/6. 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 9/1711:00 am -
2 stops11h 10m
Sat 9/197:00 am -
2 stops11h 05m
Deal found 9/6![Southwest logo]()
$667
This Southwest deal was found by Cheapflights users on 9/7. 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.
Mon 9/147:25 am -
2 stops8h 45m
Tue 9/156:45 am -
2 stops11h 10m
Deal found 9/7![Southwest logo]()
$667
This Southwest deal was found by Cheapflights users on 9/4. 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 9/117:50 am -
2 stops8h 20m
Sat 9/127:00 am -
2 stops11h 00m
Deal found 9/4![Southwest logo]()
$667
This Southwest deal was found by Cheapflights users on 9/3. 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 9/206:00 am -
2 stops8h 00m
Tue 9/226:45 am -
2 stops11h 10m
Deal found 9/3![Southwest logo]()
$707
Last-minute flights from Jacksonville to Key LargoDiscover last-minute flight deals from Jacksonville to Key Largo. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Jacksonville to Key Largo. Data last updated September 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 9/287:46 pm -
1 stop14h 44m
Thu 10/15:32 am -
1 stop13h 29m
Deal found 9/4![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:46 pm -
1 stop14h 29m
Thu 10/155:15 am -
1 stop12h 10m
Deal found 9/7![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/127:46 pm -
1 stop14h 29m
Fri 10/1610:55 pm -
1 stop19h 51m
Deal found 9/3![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:46 pm -
1 stop14h 29m
Fri 10/2310:55 pm -
1 stop19h 51m
Deal found 9/7![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:46 pm -
1 stop14h 29m
Sat 10/175:05 am -
1 stop13h 41m
Deal found 9/7![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/207:46 pm -
1 stop14h 29m
Sat 11/145:05 am -
1 stop13h 23m
Deal found 9/4![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:46 pm -
1 stop14h 29m
Mon 10/2610:55 pm -
1 stop19h 13m
Deal found 9/6![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/226:20 pm -
1 stop27h 30m
Mon 10/2610:55 pm -
1 stop19h 13m
Deal found 9/4![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/277:03 pm -
1 stop15h 26m
Tue 11/35:05 am -
1 stop13h 03m
Deal found 9/5![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/277:03 pm -
1 stop15h 26m
Mon 11/210:55 pm -
1 stop19h 13m
Deal found 9/4![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/287:03 pm -
1 stop15h 26m
Tue 11/35:05 am -
1 stop13h 03m
Deal found 9/4![Frontier logo]()
$124
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 September 8, 2026.
Search for one-way flight options from Jacksonville to Key Largo. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:46 pm -
1 stop18h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/67:46 pm -
1 stop14h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 11/107:03 pm -
1 stop15h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 9/297:46 pm -
1 stop24h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:46 pm -
1 stop14h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:13 pm -
1 stop26h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/89:25 pm -
1 stop14h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 9/287:46 pm -
1 stop14h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:07 pm -
1 stop24h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/167:46 pm -
1 stop21h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 9/257:46 pm -
1 stop14h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$73
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $110 (Kiwi.com) |
One-way from | $60 (Kiwi.com) |
Popular in | October |
Cheapest in | August |
Average price | $419 |
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 7,457,451 searches. Data last updated September 8, 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
Quickest round-trip
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Wed 10/7
1:55 pm-3:15 pm
Nonstop1h 20m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$134
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Wed 10/7
6:40 am-4:55 pm
2 stops10h 15m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$163
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Sat 11/7
6:40 am-3:40 pm
2 stops9h 00m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$163
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Sat 9/12
7:46 pm-10:30 am
1 stop14h 44m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$172
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Mon 11/23
5:20 am-3:55 pm
2 stops10h 35m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$193
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Sat 10/3
5:35 am-3:20 pm
2 stops9h 45m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$193
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Fri 11/6
12:45 pm-10:00 pm
2 stops9h 15m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$193
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Thu 11/19
6:59 pm-12:56 am
1 stop5h 57m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$244
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Mon 11/16
5:35 pm-10:22 pm
1 stop4h 47m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$244
JacksonvilleMiami
JAX Jacksonville - MIA Miami
JAXMIA
Jacksonville
Fri 9/18
2:00 pm-10:10 pm
2 stops8h 10m
Miami
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$255
Showing 1-10 of 24 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 September 8, 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 in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 32% on airfare.
How much does it cost to fly round-trip from Jacksonville to Key Largo?
Airfare is below average for this route at the moment.
Jacksonville to Key Largo flights typically cost between $280 and $570 in November.The cheapest round-trip price found within the last 5 days was $110 on Frontier (Nov 10-Nov 14).
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 September 5, 2026.
Travelers seeking maximum savings on their Jacksonville to Key Largo flight should consider departing on Sunday evenings when fares are most often at their lowest. Tuesday 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 September 8, 2026.
Get a feel of what it's like to fly with Southwest,American Airlines, andJetBlue 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.
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
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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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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$150 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$266 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$147 | Average$312 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$156 | Average$432 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$217 | Average$452 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$252 | Average$388 | FlexibilityNo cancel fee | On-time63% |