HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$80+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — MIA
Apr 13 — Apr 201
Sun 4/13
Sun 4/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Jacksonville to Key Largo 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Jacksonville to Key Largo are usually found in July or June, booked 73 days in advance, depart on a Friday or Wednesday and return on a Wednesday

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 April 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$201
(Frontier)

One-way from

$80
(Frontier)

Popular in

December

Cheapest in

July

Average price

$276
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. 26% potential increase in price ($117 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 8, 2025.

This Frontier deal was found by Cheapflights users on 4/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1410:22 pmJAX - MIA
1 stop12h 48mFrontier
Wed 4/168:00 amMIA - JAX
1 stop8h 25mFrontier
Deal found 4/7$201
This American Airlines deal was found by Cheapflights users on 4/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:28 pmJAX - MIA
Nonstop1h 20mAmerican Airlines
Thu 5/88:04 pmMIA - JAX
Nonstop1h 23mAmerican Airlines
Deal found 4/7$207
This Delta deal was found by Cheapflights users on 4/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/88:14 pmJAX - MIA
1 stop4h 23mDelta
Tue 5/278:10 amMIA - JAX
1 stop5h 06mDelta
Deal found 4/7$227
This Southwest deal was found by Cheapflights users on 4/7. 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.
Wed 5/73:35 pmJAX - MIA
1 stop6h 20mSouthwest
Thu 5/812:30 pmMIA - JAX
2 stops9h 15mSouthwest
Deal found 4/7$266
This Mytrip deal was found by Cheapflights users on 4/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/68:41 pmJAX - MIA
2 stops23h 17mMultiple Airlines
Sun 6/158:45 pmMIA - JAX
1 stop24h 15mMultiple Airlines
Deal found 4/7$269
This JetBlue Airways deal was found by Cheapflights users on 4/7. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/312:35 pmJAX - MIA
1 stop10h 02mJetBlue
Mon 5/192:30 pmMIA - JAX
1 stop9h 08mJetBlue
Deal found 4/7$388
This United Airlines deal was found by Cheapflights users on 4/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/116:32 amJAX - MIA
1 stop7h 54mUnited Airlines
Wed 5/146:15 amMIA - JAX
2 stops13h 49mUnited Airlines
Deal found 4/7$493

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 April 8, 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

Fri 6/6

11:55 am-8:37 pm

1 stop8h 42m

Miami

Sat 6/7

9:42 pm-7:30 am

1 stop9h 48m

$201

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 5/7

7:28 pm-8:48 pm

Nonstop1h 20m

Miami

Thu 5/8

8:04 pm-9:27 pm

Nonstop1h 23m

$207

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 5/8

8:14 pm-12:37 am

1 stop4h 23m

Miami

Tue 5/27

8:10 am-1:16 pm

1 stop5h 06m

$227

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 5/7

12:15 pm-8:55 pm

1 stop8h 40m

Miami

Wed 5/14

7:35 am-5:00 pm

2 stops9h 25m

$252

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 6/6

8:41 pm-7:58 pm

2 stops23h 17m

Miami

Sun 6/15

8:45 pm-9:00 pm

1 stop24h 15m

$269

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Sat 5/3

12:35 pm-10:37 pm

1 stop10h 02m

Miami

Mon 5/19

2:30 pm-11:38 pm

1 stop9h 08m

$388

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Sun 5/11

6:32 am-2:26 pm

1 stop7h 54m

Miami

Wed 5/14

6:15 am-8:04 pm

2 stops13h 49m

$493

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 5/1

9:28 am-5:13 pm

1 stop7h 45m

$80

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Tue 5/6

6:00 am-7:17 am

Nonstop1h 17m

$104

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 5/9

8:14 pm-12:37 am

1 stop4h 23m

$114

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/7

Showing 1-10 of 14 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 April 4, 2025.

To ensure you get the cheapest price possible for a flight from Jacksonville to Key Largo, you should look to book at least 73 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 $229). 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 April 8, 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 Friday evenings 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.

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 April 8, 2025.

The most flights from JAX to KE9 are scheduled on a Tuesday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (14 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 April 8, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Jacksonville to Key Largo to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,277 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.1

Boarding

8.2

Entertainment

7.6

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
4,277 reviews
Southwest
8.0
Very good
4,277 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.1

Boarding

8.2

Entertainment

7.6

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
7,901 reviews
Southwest
8.0
Very good
4,277 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.1

Boarding

8.2

Entertainment

7.6

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.
United Airlines
7.4
Good
8,629 reviews
Southwest
8.0
Very good
4,277 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.1

Boarding

8.2

Entertainment

7.6

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
7.3
Good
2,923 reviews
Southwest
8.0
Very good
4,277 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.1

Boarding

8.2

Entertainment

7.6

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
4,277 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.1

Boarding

8.2

Entertainment

7.6

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 14 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, 62 users have taken a look at flights from Jacksonville to Key Largo.

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

    $80 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 $104 and $114, 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%), Aer Lingus (94%), Envoy Air( 82%).

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

    On average you can expect to pay $2,168 for a flight from Jacksonville to Key Largo. The cheapest flight overall is $93 while the most popular route, (Jacksonville - Miami) is currently priced at $194.

  • 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 $229). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Jacksonville to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Orlando to Miami flights
Tampa to Miami flights
Fort Lauderdale to Tampa flights
Miami to Tampa flights
Tampa to Key West flights
Jacksonville to Miami flights
Tampa to Fort Lauderdale flights
Orlando to Fort Lauderdale flights
Miami to Orlando flights
Pensacola to Orlando flights
Jacksonville to Fort Lauderdale flights
Orlando to Key West flights
Fort Lauderdale to Orlando flights
Tampa to Pensacola flights
Miami to Jacksonville flights
Pensacola to Fort Lauderdale flights
Pensacola to Miami flights
Fort Lauderdale to Tallahassee flights
Miami to Tallahassee flights
Orlando to Pensacola flights
Fort Lauderdale to Jacksonville flights
Fort Lauderdale to Pensacola flights
Pensacola to Tampa flights
Orlando to Panama City flights
Miami to Pensacola flights
Fort Lauderdale to Panama City flights
Tallahassee to Fort Lauderdale flights
West Palm Beach to Tampa flights
Fort Lauderdale to Key West flights
Jacksonville to Key West flights
Tallahassee to Miami flights
Tampa to West Palm Beach flights
West Palm Beach to Tallahassee flights
Sarasota to Key West flights
West Palm Beach to Panama City flights
West Palm Beach to Jacksonville flights
Fort Myers to Pensacola flights
Panama City to Miami flights
Fort Lauderdale to Valparaiso flights
Gainesville to Miami flights
Miami to Panama City flights
Fort Myers to Key West flights
West Palm Beach to Pensacola flights
Tallahassee to Tampa flights
Sarasota to Miami flights
Tallahassee to Key West flights
Fort Myers to Jacksonville flights
Pensacola to Sarasota flights
Tampa to Tallahassee flights
Pensacola to Key West flights

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 April 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$80Average$215FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$120Average$367FlexibilityNo cancel feeOn-time71%
DeltaCheapest$156Average$374FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$312Average$352FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.