$67+ Cheap flights from Key Largo, FL to Jacksonville (JAX)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — JAX
Sep 8 — Sep 151
Round-trip
1 adult, Economy
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Find cheap flights from Key Largo to Jacksonville 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
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Cheapest flights from Key Largo to JacksonvilleExplore the most affordable flight options available from Key Largo to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
Explore the most affordable flight options available from Key Largo to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 8/288:10 am -
1 stop10h 00m
Mon 8/317:05 pm -
1 stop18h 27m
Deal found 8/7![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 9/239:43 pm -
1 stop21h 18m
Mon 9/287:46 pm -
1 stop14h 44m
Deal found 8/6![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sun 9/209:43 pm -
1 stop21h 18m
Thu 10/17:46 pm -
1 stop20h 43m
Deal found 8/6![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sat 8/298:10 am -
1 stop10h 00m
Mon 8/317:05 pm -
1 stop18h 27m
Deal found 8/7![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sun 9/209:43 pm -
1 stop21h 18m
Sun 9/277:46 pm -
1 stop20h 43m
Deal found 8/6![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Thu 8/278:10 am -
1 stop10h 00m
Sun 8/307:05 pm -
1 stop21h 16m
Deal found 8/5![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/245:32 am -
1 stop13h 29m
Sun 9/277:46 pm -
1 stop20h 43m
Deal found 8/4![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Fri 8/288:10 am -
1 stop10h 00m
Sun 8/307:05 pm -
1 stop21h 16m
Deal found 8/5![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Fri 8/288:10 am -
1 stop10h 00m
Fri 9/47:05 pm -
1 stop25h 24m
Deal found 8/5![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Wed 8/268:10 am -
1 stop10h 00m
Sun 9/67:05 pm -
1 stop18h 27m
Deal found 8/5![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/245:32 am -
1 stop13h 29m
Sat 9/267:46 pm -
1 stop14h 44m
Deal found 8/4![Frontier logo]()
$147
Best flights from Key Largo to JacksonvilleDiscover carefully curated flight deals from Key Largo to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Key Largo to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/245:32 am -
1 stop13h 29m
Sat 9/267:46 pm -
1 stop14h 44m
Deal found 8/4![Frontier logo]()
$147
This Delta deal was found by Cheapflights users on 8/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 pm -
1 stop5h 58m
Fri 9/187:59 pm -
1 stop4h 56m
Deal found 8/9![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 8/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/248:03 am -
Nonstop1h 23m
Sat 9/267:45 am -
Nonstop1h 23m
Deal found 8/4![American Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 8/7. 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 8/296:30 am -
2 stops9h 30m
Mon 8/317:25 am -
2 stops8h 45m
Deal found 8/7![Southwest logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/97:00 am -
1 stop10h 51m
Sat 10/106:46 pm -
1 stop14h 12m
Deal found 8/4![Frontier logo]()
$177
This Southwest deal was found by Cheapflights users on 8/7. 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 9/47:00 am -
2 stops8h 15m
Fri 9/111:00 pm -
2 stops9h 10m
Deal found 8/7![Southwest logo]()
$298
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:08 pm -
1 stop4h 51m
Fri 8/215:34 pm -
1 stop5h 17m
Deal found 8/4![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 8/4. 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 10/97:10 am -
2 stops10h 40m
Sat 10/1011:50 am -
2 stops10h 15m
Deal found 8/4![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 8/5. 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.
Thu 8/277:00 am -
2 stops8h 55m
Sun 8/301:00 pm -
2 stops9h 50m
Deal found 8/5![Southwest logo]()
$350
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sun 9/206:45 am -
2 stops6h 35m
Wed 9/236:15 am -
2 stops9h 15m
Deal found 8/7![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 8/4. 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.
Thu 9/2412:25 pm -
2 stops8h 45m
Sat 9/268:00 am -
2 stops11h 20m
Deal found 8/4![Southwest logo]()
$374
This Southwest deal was found by Cheapflights users on 8/9. 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 9/47:00 am -
2 stops8h 15m
Sun 9/67:35 am -
2 stops9h 00m
Deal found 8/9![Southwest logo]()
$409
Last-minute flights from Key Largo to JacksonvilleDiscover last-minute flight deals from Key Largo to Jacksonville. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Jacksonville. Data last updated August 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Wed 8/268:10 am -
1 stop10h 00m
Sun 9/67:05 pm -
1 stop18h 27m
Deal found 8/5![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Thu 8/278:10 am -
1 stop10h 00m
Sun 8/307:05 pm -
1 stop21h 16m
Deal found 8/5![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 8/288:10 am -
1 stop10h 00m
Mon 8/317:05 pm -
1 stop18h 27m
Deal found 8/7![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Fri 8/288:10 am -
1 stop10h 00m
Sun 8/307:05 pm -
1 stop21h 16m
Deal found 8/5![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Fri 8/288:10 am -
1 stop10h 00m
Fri 9/47:05 pm -
1 stop25h 24m
Deal found 8/5![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sat 8/298:10 am -
1 stop10h 00m
Mon 8/317:05 pm -
1 stop18h 27m
Deal found 8/7![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sun 9/209:43 pm -
1 stop21h 18m
Thu 10/17:46 pm -
1 stop20h 43m
Deal found 8/6![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Sun 9/209:43 pm -
1 stop21h 18m
Sun 9/277:46 pm -
1 stop20h 43m
Deal found 8/6![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 9/239:43 pm -
1 stop21h 18m
Mon 9/287:46 pm -
1 stop14h 44m
Deal found 8/6![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/245:32 am -
1 stop13h 29m
Sun 9/277:46 pm -
1 stop20h 43m
Deal found 8/4![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/245:32 am -
1 stop13h 29m
Sat 9/267:46 pm -
1 stop14h 44m
Deal found 8/4![Frontier logo]()
$147
One-way flights from Key Largo to JacksonvilleSearch for one-way flight options from Key Largo to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from Key Largo to Jacksonville. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Trip.com deal was found by Cheapflights users on 8/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:32 am -
1 stop13h 29m
Deal found 8/7![Frontier logo]()
$67
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:10 am -
1 stop10h 00m
Deal found 8/5![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 10/55:32 am -
1 stop13h 29m
Deal found 8/6![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 10/79:43 pm -
1 stop20h 08m
Deal found 8/7![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sun 10/49:43 pm -
1 stop21h 18m
Deal found 8/7![Frontier logo]()
$71
This Super.com deal was found by Cheapflights users on 8/8. 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 8/229:48 pm -
1 stop12h 31m
Deal found 8/8![Frontier logo]()
$73
This Priceline deal was found by Cheapflights users on 8/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:10 am -
1 stop7h 00m
Deal found 8/9![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sat 10/39:43 pm -
1 stop21h 18m
Deal found 8/7![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 9/68:10 am -
1 stop10h 00m
Deal found 8/4![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:28 pm -
1 stop24h 42m
Deal found 8/9![Frontier logo]()
$78
Find flight deals from Key Largo to Jacksonville
Keep the following information in mind while searching for Key Largo to Jacksonville flight deals. Data was last updated August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $67 (Trip.com) |
Popular in | July |
Cheapest in | August |
Average price | $458 |
Cheapflights Fare Finder
Customize your flight search to find flights from Key Largo to Jacksonville 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 August 9, 2026.
Use the filters below to find and compare flights from Key Largo to Jacksonville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Thu 9/24
5:32 am-7:01 pm
1 stop13h 29m
Jacksonville
Sat 9/26
7:46 pm-10:30 am
1 stop14h 44m
$147
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Fri 10/9
7:00 am-5:51 pm
1 stop10h 51m
Jacksonville
Sat 10/10
6:46 pm-8:58 am
1 stop14h 12m
$177
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Thu 9/17
6:00 pm-11:58 pm
1 stop5h 58m
Jacksonville
Fri 9/18
7:59 pm-12:55 am
1 stop4h 56m
$247
Quickest round-trip
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Thu 9/24
8:03 am-9:26 am
Nonstop1h 23m
Jacksonville
Sat 9/26
7:45 am-9:08 am
Nonstop1h 23m
$259
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Sat 8/29
6:30 am-4:00 pm
2 stops9h 30m
Jacksonville
Mon 8/31
7:25 am-4:10 pm
2 stops8h 45m
$291
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Fri 9/4
7:00 am-3:15 pm
2 stops8h 15m
Jacksonville
Fri 9/11
1:00 pm-10:10 pm
2 stops9h 10m
$298
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Thu 8/20
2:08 pm-6:59 pm
1 stop4h 51m
Jacksonville
Fri 8/21
5:34 pm-10:51 pm
1 stop5h 17m
$309
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Fri 10/9
7:10 am-5:50 pm
2 stops10h 40m
Jacksonville
Sat 10/10
11:50 am-10:05 pm
2 stops10h 15m
$349
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Thu 8/27
7:00 am-3:55 pm
2 stops8h 55m
Jacksonville
Sun 8/30
1:00 pm-10:50 pm
2 stops9h 50m
$350
MiamiJacksonville
MIA Miami - JAX Jacksonville
MIAJAX
Miami
Sun 9/20
6:45 am-1:20 pm
2 stops6h 35m
Jacksonville
Wed 9/23
6:15 am-3:30 pm
2 stops9h 15m
$368
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Key Largo to Jacksonville
Have a flexible travel schedule? Discover the best time to fly to Jacksonville from Key Largo with our price prediction graph.
MIA-JAX
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Key Largo to Jacksonville
KE9-JAX
MIA-JAX
What is the cheapest time of day to fly from KE9 to JAX?
Find hourly flight availability from Key Largo to Jacksonville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 9, 2026.
A simple way to save on the total cost of your ticket is to fly from Key Largo to Jacksonville in the afternoon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the evening.
Weekly flight availability from Key Largo to Jacksonville
Explore weekly flight availability from Key Largo to Jacksonville. 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 August 9, 2026.
The most flights from KE9 to JAX are scheduled on a Friday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Key Largo to Jacksonville?
Airfare is below average for this route at the moment.
Key Largo to Jacksonville flights typically cost between $257 and $578 in August.The cheapest round-trip price found within the last 5 days was $133 on Frontier (Aug 28-Aug 31).
What is the cheapest day to fly from Key Largo to Jacksonville?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to Jacksonville. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Key Largo to Jacksonville flight should consider departing on Sunday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Jacksonville
Get insights into the airlines that provide service to Jacksonville. 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 Jacksonville. Reviews last updated August 9, 2026.
Read reviews from past customers who have flown American Airlines and Frontier from Key Largo to Jacksonville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.8
Food
6.4
Crew
7.9
Overall
7.1
Boarding
7.5
Comfort
7.2
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Entertainment
6.8
Food
6.4
Crew
7.9
Overall
7.1
Boarding
7.5
Comfort
7.2
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Entertainment
6.8
Food
6.4
Crew
7.9
Overall
7.1
Boarding
7.5
Comfort
7.2
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Related info for your journey
Find useful and relevant information for your journey from Key Largo to Jacksonville. 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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Discover the top 5 airlines that operate flights from Key Largo to Jacksonville. 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 August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$201 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$116 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$147 | Average$209 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$316 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$159 | Average$451 | FlexibilityNo cancel fee | On-time71% |