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Key Largo

$77+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — MIA
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
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 Friday and return on a Friday

Cheap 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 septiembre 16, 2025.

Round-trip from

$147
(Priceline)

One-way from

$77
(Frontier)

Popular in

June

Cheapest in

March

Average price

$471
From Jacksonville to Key Largo
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One-way flight from Jacksonville to Key Largo
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Highest demand for flights based on searches. 4% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 16, 2025.

This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/1811:46 amJAX - MIA
1 stop6h 36mFrontier
lun. 10/279:36 amMIA - JAX
1 stop11h 11mFrontier
Deal found 9/15$147
This Frontier deal was found by Cheapflights users on 9/15. 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.
jue. 11/62:03 pmJAX - MIA
1 stop7h 23mFrontier
dom. 11/95:01 amMIA - JAX
1 stop11h 22mFrontier
Deal found 9/15$154
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/305:13 pmJAX - MIA
1 stop7h 21mFrontier
vie. 10/319:30 amMIA - JAX
1 stop8h 39mFrontier
Deal found 9/14$156
This Frontier deal was found by Cheapflights users on 9/15. 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.
jue. 10/166:03 pmJAX - MIA
1 stop6h 31mFrontier
dom. 10/199:57 pmMIA - JAX
1 stop22h 50mFrontier
Deal found 9/15$157
This Frontier deal was found by Cheapflights users on 9/15. 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.
jue. 10/305:13 pmJAX - MIA
1 stop7h 21mFrontier
jue. 11/65:01 amMIA - JAX
1 stop11h 12mFrontier
Deal found 9/15$163
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/710:10 amJAX - MIA
1 stop7h 31mFrontier
dom. 11/95:01 amMIA - JAX
1 stop11h 22mFrontier
Deal found 9/14$189
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1011:37 amJAX - MIA
1 stop13h 22mFrontier
lun. 10/139:25 amMIA - JAX
1 stop11h 27mFrontier
Deal found 9/14$203
This Frontier deal was found by Cheapflights users on 9/15. 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.
dom. 11/95:18 pmJAX - MIA
1 stop7h 16mFrontier
dom. 11/165:01 amMIA - JAX
1 stop11h 22mFrontier
Deal found 9/15$204
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
jue. 10/236:03 pmJAX - MIA
2 stops22h 00mMultiple Airlines
dom. 10/2610:29 amMIA - JAX
1 stop6h 41mMultiple Airlines
Deal found 9/13$206

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 septiembre 16, 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

jue. 10/16

6:03 pm-12:34 am

1 stop6h 31m

Miami

dom. 10/19

9:57 pm-8:47 pm

1 stop22h 50m

$157

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mié. 11/12

7:35 am-6:51 pm

1 stop11h 16m

Miami

sáb. 11/15

8:20 am-10:26 pm

1 stop14h 06m

$243

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mié. 11/12

7:35 am-6:51 pm

1 stop11h 16m

Miami

mié. 11/19

7:15 am-10:26 pm

1 stop15h 11m

$243

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mar. 10/14

11:25 am-9:05 pm

1 stop9h 40m

Miami

mar. 10/21

7:35 am-12:20 pm

1 stop4h 45m

$262

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mié. 11/12

12:12 pm-11:13 pm

1 stop11h 01m

Miami

lun. 11/17

11:27 am-10:26 pm

1 stop10h 59m

$269

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mié. 10/22

6:25 am-3:55 pm

2 stops9h 30m

Miami

lun. 10/27

6:50 am-3:15 pm

1 stop8h 25m

$276

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mar. 11/11

11:12 am-10:43 pm

1 stop11h 31m

Miami

lun. 11/17

11:27 am-10:26 pm

1 stop10h 59m

$289

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

mar. 10/7

7:10 am-3:55 pm

1 stop8h 45m

Miami

sáb. 10/11

5:45 am-1:35 pm

1 stop7h 50m

$290

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

dom. 10/12

6:05 pm-12:34 am

1 stop6h 29m

$77

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

vie. 10/10

11:37 am-12:59 am

1 stop13h 22m

$97

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 17 results
1
2

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 September 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 24 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, September is the cheapest month in which you can book a flight from Jacksonville to Key Largo (average of $232). Flying from Jacksonville to Key Largo in March is currently the most expensive (average of $289). 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 septiembre 16, 2025.

When flying from Jacksonville to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 Tuesday mornings when fares are most often at their lowest. Saturday 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 septiembre 16, 2025.

The most flights from JAX to KE9 are scheduled on a Tuesday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 septiembre 16, 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
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
2,914 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
3,174 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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 10 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, 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 6h 31m. Fly via Frontier, Delta, or Southwest to get the fastest option. Airlines will cover a distance of 335 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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: Iberia (84%), Envoy Air (84%), American Airlines( 83%).

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

    On average you can expect to pay $865 for a flight from Jacksonville to Key Largo. The cheapest flight overall is $162 while the most popular route, (Jacksonville - Miami) is currently priced at $154.

  • 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, September is the cheapest month in which you can book a flight from Jacksonville to Key Largo (average of $232). Flying from Jacksonville to Key Largo in March is currently the most expensive (average of $289). 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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$80Average$162FlexibilityNo cancel feeOn-time62%
FrontierCheapest$110Average$190FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$123Average$264FlexibilityNo cancel feeOn-time63%
DeltaCheapest$156Average$419FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$186Average$405FlexibilityNo cancel feeOn-time71%

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