$61+ 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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — JAX
Jun 7 — Jun 141
Round-trip
1 adult, Economy
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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 May 8, 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 May 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/28:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Tue 6/96:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 7/28:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Mon 7/66:28 pm
JAX
- MIA
1 stop22h 05m
Frontier
Deal found 5/7![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/258:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Mon 6/296:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/5![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Sat 8/13:07 pm
MIA
- JAX
1 stop26h 26m
Frontier
Sat 8/156:28 pm
JAX
- MIA
1 stop5h 08m
Frontier
Deal found 5/5![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/18:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Mon 6/86:30 pm
JAX
- MIA
2 stops28h 09m
Frontier
Deal found 5/4![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/105:26 pm
MIA
- JAX
1 stop24h 07m
Frontier
Wed 6/176:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/6![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/258:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Sun 6/286:28 pm
JAX
- MIA
1 stop19h 21m
Frontier
Deal found 5/4![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 6/45:05 am
MIA
- JAX
2 stops12h 30m
Frontier
Mon 6/86:30 pm
JAX
- MIA
1 stop28h 33m
Frontier
Deal found 5/7![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/48:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Sun 6/76:30 pm
JAX
- MIA
2 stops15h 57m
Frontier
Deal found 5/4![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/38:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Sat 6/66:30 pm
JAX
- MIA
2 stops15h 57m
Frontier
Deal found 5/7![Frontier logo]()
$168
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 May 8, 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 May 8, 2026.
This Southwest deal was found by Cheapflights users on 5/3. 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.
Tue 6/1611:25 am
MIA
- JAX
2 stops9h 25m
Southwest
Tue 6/231:55 pm
JAX
- MIA
2 stops8h 15m
Southwest
Deal found 5/3![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 5/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
MIA
- JAX
1 stop5h 45m
Delta
Mon 6/19:47 am
JAX
- MIA
1 stop6h 59m
Delta
Deal found 5/6![Delta logo]()
$445
This Southwest deal was found by Cheapflights users on 5/5. 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.
Tue 6/27:00 am
MIA
- JAX
2 stops8h 45m
Southwest
Tue 6/91:55 pm
JAX
- MIA
2 stops8h 15m
Southwest
Deal found 5/5![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 5/5. 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.
Tue 6/2311:25 am
MIA
- JAX
2 stops9h 25m
Southwest
Tue 6/301:55 pm
JAX
- MIA
2 stops8h 15m
Southwest
Deal found 5/5![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 5/7. 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.
Tue 8/116:45 am
MIA
- JAX
2 stops11h 10m
Southwest
Thu 8/131:00 pm
JAX
- MIA
2 stops9h 05m
Southwest
Deal found 5/7![Southwest logo]()
$340
This Southwest deal was found by Cheapflights users on 5/5. 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 10/912:35 pm
MIA
- JAX
1 stop6h 10m
Southwest
Mon 10/125:10 am
JAX
- MIA
2 stops9h 45m
Southwest
Deal found 5/5![Southwest logo]()
$358
This Southwest deal was found by Cheapflights users on 5/3. 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.
Sat 10/175:55 am
MIA
- JAX
2 stops9h 55m
Southwest
Sun 10/186:25 am
JAX
- MIA
1 stop7h 25m
Southwest
Deal found 5/3![Southwest logo]()
$378
This Southwest deal was found by Cheapflights users on 5/6. 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.
Fri 8/2812:25 pm
MIA
- JAX
2 stops8h 40m
Southwest
Sun 8/301:00 pm
JAX
- MIA
2 stops9h 50m
Southwest
Deal found 5/6![Southwest logo]()
$383
This Southwest deal was found by Cheapflights users on 5/4. 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.
Sun 6/215:50 am
MIA
- JAX
1 stop7h 25m
Southwest
Sun 6/212:45 pm
JAX
- MIA
2 stops9h 50m
Southwest
Deal found 5/4![Southwest logo]()
$402
This Southwest deal was found by Cheapflights users on 5/4. 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 6/265:25 am
MIA
- JAX
2 stops8h 10m
Southwest
Sun 6/2810:55 am
JAX
- MIA
2 stops11h 15m
Southwest
Deal found 5/4![Southwest logo]()
$424
This Southwest deal was found by Cheapflights users on 5/4. 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.
Wed 9/239:15 am
MIA
- JAX
1 stop7h 30m
Southwest
Sat 9/2612:25 pm
JAX
- MIA
1 stop7h 30m
Southwest
Deal found 5/4![Southwest logo]()
$442
Last-minute flights from Key Largo to JacksonvilleDiscover last-minute flight deals from Key Largo to Jacksonville. Data last updated May 8, 2026 and is based on user searches.
Discover last-minute flight deals from Key Largo to Jacksonville. Data last updated May 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/18:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Mon 6/86:30 pm
JAX
- MIA
2 stops28h 09m
Frontier
Deal found 5/4![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/28:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Tue 6/96:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/38:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Sat 6/66:30 pm
JAX
- MIA
2 stops15h 57m
Frontier
Deal found 5/7![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 5/7. 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.
Thu 6/45:05 am
MIA
- JAX
2 stops12h 30m
Frontier
Mon 6/86:30 pm
JAX
- MIA
1 stop28h 33m
Frontier
Deal found 5/7![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/48:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Sun 6/76:30 pm
JAX
- MIA
2 stops15h 57m
Frontier
Deal found 5/4![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/105:26 pm
MIA
- JAX
1 stop24h 07m
Frontier
Wed 6/176:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/6![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Thu 6/188:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Mon 6/226:28 pm
JAX
- MIA
2 stops26h 10m
Frontier
Deal found 5/6![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/233:20 pm
MIA
- JAX
2 stops26h 13m
Frontier
Tue 6/306:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/5![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/258:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Mon 6/296:28 pm
JAX
- MIA
1 stop22h 03m
Frontier
Deal found 5/5![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/258:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Sun 6/286:28 pm
JAX
- MIA
1 stop19h 21m
Frontier
Deal found 5/4![Frontier logo]()
$156
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 May 8, 2026.
Search for one-way flight options from Key Largo to Jacksonville. Find affordable one-way fares based on user searches. Data last updated May 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 7/111:19 am
MIA
- JAX
1 stop6h 14m
Frontier
Deal found 5/5![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/38:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Deal found 5/7![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/1011:19 am
MIA
- JAX
1 stop6h 14m
Frontier
Deal found 5/7![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 8/28:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Deal found 5/6![Frontier logo]()
$70
This Kissandfly.com deal was found by Cheapflights users on 5/5. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/168:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Deal found 5/5![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 5/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:23 am
MIA
- JAX
1 stop6h 12m
Frontier
Deal found 5/4![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 5/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1911:23 am
MIA
- JAX
1 stop6h 12m
Frontier
Deal found 5/4![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 5/6. 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.
Wed 5/2711:23 am
MIA
- JAX
1 stop6h 12m
Frontier
Deal found 5/6![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/218:30 am
MIA
- JAX
1 stop9h 03m
Frontier
Deal found 5/6![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 5/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:10 am
MIA
- JAX
1 stop9h 25m
Frontier
Deal found 5/4![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/305:26 pm
MIA
- JAX
1 stop24h 07m
Frontier
Deal found 5/6![Frontier logo]()
$100
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 May 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $61 (Kiwi.com) |
Popular in | September |
Cheapest in | July |
Average price | $373 |
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 May 8, 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 - JAX
MIAJAX
Miami
Tue 6/16
11:25 am-8:50 pm
2 stops9h 25m
Jacksonville
Tue 6/23
1:55 pm-10:10 pm
2 stops8h 15m
$317
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Tue 6/2
7:00 am-3:45 pm
2 stops8h 45m
Jacksonville
Tue 6/9
1:55 pm-10:10 pm
2 stops8h 15m
$337
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Tue 6/23
11:25 am-8:50 pm
2 stops9h 25m
Jacksonville
Tue 6/30
1:55 pm-10:10 pm
2 stops8h 15m
$337
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Tue 8/11
6:45 am-5:55 pm
2 stops11h 10m
Jacksonville
Thu 8/13
1:00 pm-10:05 pm
2 stops9h 05m
$340
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Fri 10/9
12:35 pm-6:45 pm
1 stop6h 10m
Jacksonville
Mon 10/12
5:10 am-2:55 pm
2 stops9h 45m
$358
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Sat 10/17
5:55 am-3:50 pm
2 stops9h 55m
Jacksonville
Sun 10/18
6:25 am-1:50 pm
1 stop7h 25m
$378
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Fri 8/28
12:25 pm-9:05 pm
2 stops8h 40m
Jacksonville
Sun 8/30
1:00 pm-10:50 pm
2 stops9h 50m
$383
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Sun 6/21
5:50 am-1:15 pm
1 stop7h 25m
Jacksonville
Sun 6/21
2:45 pm-12:35 am
2 stops9h 50m
$402
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Fri 6/26
5:25 am-1:35 pm
2 stops8h 10m
Jacksonville
Sun 6/28
10:55 am-10:10 pm
2 stops11h 15m
$424
MiamiJacksonville
MIA - JAX
MIAJAX
Miami
Wed 9/23
9:15 am-4:45 pm
1 stop7h 30m
Jacksonville
Sat 9/26
12:25 pm-7:55 pm
1 stop7h 30m
$442
Showing 1-10 of 20 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 May 8, 2026.
A simple way to save on the total cost of your ticket is to fly from Key Largo to Jacksonville in the morning. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the afternoon.
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 October 19, 2025.
Travelers seeking maximum savings on their Key Largo to Jacksonville flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 May 8, 2026.
The most flights from KE9 to JAX are scheduled on a Wednesday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (14 on average).
How much does it cost to fly round-trip from Key Largo to Jacksonville?
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 May 8, 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.
Comfort
7.2
Overall
7.1
Crew
7.9
Entertainment
6.9
Boarding
7.5
Food
6.4
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Comfort
7.2
Overall
7.1
Crew
7.9
Entertainment
6.9
Boarding
7.5
Food
6.4
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Comfort
7.2
Overall
7.1
Crew
7.9
Entertainment
6.9
Boarding
7.5
Food
6.4
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.
Traveling to a place near Jacksonville?
Book flights to Jacksonville if you plan to visit one of these locationsJacksonville Beach
Orange Park
Fernandina Beach
Kingsland
Waycross
Atlantic Beach
Yulee
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Top 4 airlines flying from Key Largo to Jacksonville
Discover the top 4 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 May 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$74 | Average$212 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$77 | Average$160 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$153 | Average$266 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$159 | Average$430 | FlexibilityNo cancel fee | On-time71% |