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Key Largo

$63+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — MIA
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheapflights Tip: The best prices from Jacksonville to Key Largo are usually found in March or August, booked 24 days in advance, depart on a Friday or Sunday and return on a Friday

Cheap flight deals from Jacksonville to Key Largo

Cheapest flights from Jacksonville to Key Largo
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 February 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/208:12 pm
JAX
-
MIA
1 stop16h 04m
Multiple Airlines
Wed 2/257:05 am
MIA
-
JAX
1 stop11h 56m
Multiple Airlines
Deal found 2/2$122
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/237:24 pm
JAX
-
MIA
1 stop16h 52m
Multiple Airlines
Sat 2/287:05 am
MIA
-
JAX
1 stop11h 22m
Multiple Airlines
Deal found 2/2$123
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/27:29 pm
JAX
-
MIA
1 stop5h 13m
Multiple Airlines
Wed 3/47:05 am
MIA
-
JAX
1 stop11h 56m
Multiple Airlines
Deal found 2/3$126
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/237:24 pm
JAX
-
MIA
1 stop16h 52m
Multiple Airlines
Wed 2/2512:10 pm
MIA
-
JAX
1 stop6h 51m
Multiple Airlines
Deal found 2/3$127
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/237:24 pm
JAX
-
MIA
1 stop16h 52m
Multiple Airlines
Fri 2/277:09 pm
MIA
-
JAX
1 stop23h 18m
Multiple Airlines
Deal found 2/2$128
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/278:12 pm
JAX
-
MIA
1 stop4h 30m
Frontier
Tue 3/37:09 pm
MIA
-
JAX
1 stop23h 52m
Frontier
Deal found 2/1$130
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/167:53 pm
JAX
-
MIA
1 stop14h 35m
Frontier
Tue 2/177:09 pm
MIA
-
JAX
1 stop23h 52m
Frontier
Deal found 2/3$131
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/27:29 pm
JAX
-
MIA
1 stop16h 47m
Multiple Airlines
Fri 3/65:05 am
MIA
-
JAX
1 stop13h 34m
Multiple Airlines
Deal found 2/1$133
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Fri 2/208:12 pm
JAX
-
MIA
1 stop16h 04m
Multiple Airlines
Fri 2/277:09 pm
MIA
-
JAX
1 stop23h 18m
Multiple Airlines
Deal found 2/3$134
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/167:53 pm
JAX
-
MIA
1 stop16h 23m
Multiple Airlines
Thu 2/197:14 pm
MIA
-
JAX
1 stop24h 03m
Multiple Airlines
Deal found 2/2$135
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/208:12 pm
JAX
-
MIA
1 stop14h 16m
Frontier
Mon 2/235:05 am
MIA
-
JAX
1 stop13h 34m
Frontier
Deal found 2/2$136
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/98:18 pm
JAX
-
MIA
1 stop16h 48m
Frontier
Thu 3/125:05 am
MIA
-
JAX
1 stop10h 29m
Frontier
Deal found 2/1$139

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$122
(Kiwi.com)

One-way from

$63
(Kiwi.com)

Popular in

October

Cheapest in

March

Average price

$486
Provider with most accurate pricing for Jacksonville-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Jacksonville-Miami flights.
Search Deals
From Jacksonville to Key Largo
Search Deals
One-way flight from Jacksonville to Key Largo
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
Use the filters below to find and compare flights from Jacksonville to Key Largo that are best for you.

Fly from

Jacksonville

Fly to

Key Largo

Route

Depart

Return

Price

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Sat 4/11

4:47 pm-12:49 am

1 stop8h 02m

Miami

Sat 4/18

5:05 am-2:13 pm

1 stop9h 08m

$160

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 2/19

5:51 pm-12:16 pm

2 stops18h 25m

Miami

Mon 2/23

5:05 am-6:39 pm

1 stop13h 34m

$203

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 2/13

8:12 pm-4:03 pm

2 stops19h 51m

Miami

Mon 2/16

5:05 am-7:01 pm

1 stop13h 56m

$210

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 2/13

4:42 pm-3:40 pm

1 stop22h 58m

Miami

Mon 2/16

5:05 am-7:01 pm

1 stop13h 56m

$221

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Sun 5/3

5:51 pm-10:32 am

1 stop16h 41m

Miami

Sat 5/9

5:05 am-2:13 pm

1 stop9h 08m

$228

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 3/20

5:58 pm-12:47 am

1 stop6h 49m

Miami

Mon 3/23

5:05 am-5:08 pm

1 stop12h 03m

$255

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Mon 4/27

8:17 pm-12:49 am

1 stop4h 32m

Miami

Wed 4/29

9:45 pm-5:13 pm

2 stops19h 28m

$261

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 4/17

8:17 pm-12:49 am

1 stop4h 32m

Miami

Tue 4/21

8:35 pm-5:13 pm

2 stops44h 38m

$292

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 4/16

3:25 pm-9:25 pm

1 stop6h 00m

Miami

Tue 4/21

7:20 am-1:40 pm

1 stop6h 20m

$301

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 4/29

8:20 am-4:50 pm

1 stop8h 30m

Miami

Thu 4/30

11:40 am-7:35 pm

1 stop7h 55m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 23 results
1
2
3

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.
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

How far ahead should I book a flight from Jacksonville to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Jacksonville to Key Largo. Price data was last updated on January 30, 2026.

To ensure you get the cheapest price possible for a flight from Jacksonville to Key Largo, you should look to book at least 22 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Jacksonville to Key Largo?

Currently, January is the cheapest month in which you can book a flight from Jacksonville to Key Largo (average of $127). Flying from Jacksonville to Key Largo in November is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from 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 February 3, 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 morning could potentially save you up to 48% on airfare.

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 January 31, 2026.

Travelers seeking maximum savings on their Jacksonville to Key Largo flight should consider departing on Monday mornings 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.

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 February 3, 2026.

The most flights from JAX to KE9 are scheduled on a Tuesday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

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 February 3, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and American Airlines 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.
Southwest
8.0
Very good
4,272 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Delta
7.9
Good
8,138 reviews
Southwest
8.0
Very good
4,272 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
American Airlines
7.2
Good
11,216 reviews
Southwest
8.0
Very good
4,272 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

  • What airport do you fly from for flights from Jacksonville to Key Largo?

    If you book a flight to Key Largo from Jacksonville, you will be flying from Jacksonville, which is the city’s only airport. Jacksonville (JAX) is located 11.2 mi from the center of Jacksonville. There are 12 flights from Jacksonville to Key Largo per day from 4 different airlines.

  • How popular is this Jacksonville to Key Largo flight route?

    Within the past month, 59 users have taken a look at flights from Jacksonville to Key Largo.

  • How long is the flight from Jacksonville to Key Largo?

    There are many flights that can get you from Jacksonville to Key Largo in 8h 02m. Fly via Frontier to get the fastest option. Airlines will cover a distance of 335 mi.

  • What are the cheapest airlines to fly from Jacksonville to Key Largo one-way?

    $61 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $93 and $99, respectively.

  • What are the most reliable airlines from Jacksonville to Key Largo?

    Before booking your flight to Key Largo from Jacksonville, check out the most reliable airlines to get you to your destination on time: Republic Airways (100%), Iberia (86%), Qatar Airways( 86%).

  • What are the cheapest flights from Jacksonville to Key Largo?

    On average you can expect to pay $1,103 for a flight from Jacksonville to Key Largo. The cheapest flight overall is $180 while the most popular route, (Jacksonville - Miami) is currently priced at $122.

  • Can I find deals for flights from Jacksonville to Key Largo that include hotel bookings?

    Yes. In addition to deals on Jacksonville to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Jacksonville to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Jacksonville to Key Largo.

  • Can I find deals for business class flights from Jacksonville to Key Largo?

    Yes. Cheapflights offers flight deals from Jacksonville to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Jacksonville to Key Largo?

    Currently, January is the cheapest month in which you can book a flight from Jacksonville to Key Largo (average of $127). Flying from Jacksonville to Key Largo in November is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Jacksonville to Key Largo

Discover the top 4 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$123Average$265FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$137Average$196FlexibilityNo cancel feeOn-time62%
DeltaCheapest$171Average$423FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$396FlexibilityNo cancel feeOn-time71%

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