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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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — MIA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 Sunday or Monday 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 December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/315:29 pmJAX - MIA
1 stop27h 35mMultiple Airlines
Wed 1/78:40 pmMIA - JAX
1 stop24h 08mMultiple Airlines
Deal found 12/16$190
This Expedia deal was found by Cheapflights users on 12/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:00 pmJAX - MIA
1 stop9h 00mFrontier
Wed 12/245:30 amMIA - JAX
1 stop11h 04mFrontier
Deal found 12/14$213
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/295:23 pmJAX - MIA
1 stop19h 43mMultiple Airlines
Tue 12/309:28 pmMIA - JAX
1 stop21h 22mMultiple Airlines
Deal found 12/16$232
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:29 pmJAX - MIA
1 stop7h 18mFrontier
Mon 12/295:30 amMIA - JAX
1 stop10h 57mFrontier
Deal found 12/15$242
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/219:00 pmJAX - MIA
1 stop9h 00mFrontier
Wed 12/245:30 amMIA - JAX
1 stop11h 04mFrontier
Deal found 12/15$247
This Frontier deal was found by Cheapflights users on 12/15. 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 12/225:23 pmJAX - MIA
1 stop7h 28mFrontier
Fri 12/265:30 amMIA - JAX
1 stop10h 57mFrontier
Deal found 12/15$253
This Frontier deal was found by Cheapflights users on 12/15. 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 12/156:36 pmJAX - MIA
1 stop6h 10mFrontier
Mon 12/225:30 amMIA - JAX
1 stop10h 57mFrontier
Deal found 12/15$263
This Expedia deal was found by Cheapflights users on 12/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:00 pmJAX - MIA
1 stop9h 00mFrontier
Mon 12/222:21 pmMIA - JAX
1 stop6h 59mFrontier
Deal found 12/16$264
This Trip.com deal was found by Cheapflights users on 12/15. 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.
Sat 12/209:00 pmJAX - MIA
1 stop9h 00mFrontier
Tue 12/235:05 amMIA - JAX
1 stop15h 00mFrontier
Deal found 12/15$285
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/309:29 pmJAX - MIA
1 stop15h 09mMultiple Airlines
Thu 1/18:00 amMIA - JAX
2 stops13h 20mMultiple Airlines
Deal found 12/15$290

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$122
(Kiwi.com)

One-way from

$63
(Trip.com)

Popular in

October

Cheapest in

March

Average price

$530
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 ($70 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 December 2025
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 December 18, 2025.
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 1/24

5:28 pm-12:47 am

1 stop7h 19m

Miami

Sun 1/25

2:01 pm-8:51 pm

1 stop6h 50m

$247

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Tue 1/6

7:05 am-8:26 pm

1 stop13h 21m

Miami

Sat 1/10

7:40 am-10:23 pm

1 stop14h 43m

$257

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 1/8

6:00 am-6:54 pm

1 stop12h 54m

Miami

Sat 1/10

7:40 am-10:23 pm

1 stop14h 43m

$266

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 1/7

11:24 am-11:20 pm

2 stops11h 56m

Miami

Sat 1/10

7:40 am-10:57 pm

2 stops15h 17m

$270

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 1/7

7:05 am-8:26 pm

1 stop13h 21m

Miami

Mon 1/12

7:40 am-10:38 pm

1 stop14h 58m

$276

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Tue 1/6

7:05 am-8:26 pm

1 stop13h 21m

Miami

Mon 1/12

7:40 am-10:38 pm

1 stop14h 58m

$294

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Mon 2/2

6:50 am-1:35 pm

1 stop6h 45m

Miami

Tue 2/3

9:00 am-6:10 pm

1 stop9h 10m

$301

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Tue 12/30

9:29 pm-12:38 pm

1 stop15h 09m

Miami

Thu 1/1

9:05 pm-4:27 pm

1 stop19h 22m

$301

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Tue 1/20

6:50 am-1:35 pm

1 stop6h 45m

Miami

Tue 1/27

6:55 am-5:00 pm

2 stops10h 05m

$316

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 2/19

11:35 am-9:55 pm

2 stops10h 20m

Miami

Tue 2/24

6:55 am-5:00 pm

2 stops10h 05m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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 December 12, 2025.

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 December 18, 2025.

One of the essential ways to save on airfare from Jacksonville to Key Largo is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 36% 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 December 16, 2024.

Travelers seeking maximum savings on their Jacksonville to Key Largo flight should consider departing on Monday at noon when fares are most often at their lowest. Thursday 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 December 18, 2025.
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
7.9
Good
4,249 reviews

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
7.9
Good
4,249 reviews
Southwest
7.9
Good
4,249 reviews

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
8,006 reviews
Southwest
7.9
Good
4,249 reviews

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
11,053 reviews
Southwest
7.9
Good
4,249 reviews

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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.
JetBlue
7.2
Good
2,895 reviews
Southwest
7.9
Good
4,249 reviews

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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.
Frontier
5.8
Fair
3,082 reviews
Southwest
7.9
Good
4,249 reviews

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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 5 flights from Jacksonville to Key Largo per day from 5 different airlines.

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

    Within the past month, 64 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 13h 21m. Fly via Delta 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 Delta and American Airlines, with prices starting from $79 and $95, 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%), Qatar Airways (88%), American Airlines( 87%).

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

    On average you can expect to pay $921 for a flight from Jacksonville to Key Largo. The cheapest flight overall is $140 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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Top 5 airlines flying from Jacksonville to Key Largo

Discover the top 5 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$80Average$160FlexibilityNo cancel feeOn-time62%
FrontierCheapest$110Average$187FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$123Average$275FlexibilityNo cancel feeOn-time63%
DeltaCheapest$171Average$422FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$193Average$410FlexibilityNo cancel feeOn-time71%

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