How popular is this Jacksonville to Key Largo flight route?

Within the past month, 70 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?

$64 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and American Airlines, with prices starting from $83 and $133, respectively.

Weekly flight availability from Jacksonville to Key Largo

The most flights from JAX to KE9 are scheduled on a Wednesday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

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.

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).

What are the cheapest flights from Jacksonville to Key Largo?

On average you can expect to pay $2,122 for a flight from Jacksonville to Key Largo. The cheapest flight overall is $133 while the most popular route, (Jacksonville - Miami) is currently priced at $136.

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: Royal Air Maroc (85%), British Airways (83%), Iberia( 73%).

What are the most popular airlines that fly from Jacksonville to Key Largo?

American Airlines, Frontier and Southwest are the most popular airlines when flying from Jacksonville to Key Largo.

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 18 flights from Jacksonville to Key Largo per day from 6 different airlines.

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.

Find Cheap Flights from Jacksonville to Key Largo

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Cheapflights Tip: The best prices from Jacksonville to Key Largo are usually found in August or September, booked 60 days in advance, depart on a Saturday or Friday and return on a Saturday

Find flight deals from Jacksonville to Key Largo

Most accurate provider	FlightHub 3 stars
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Popular in	May
Cheapest in	August
Average price	$359

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Highest demand for flights based on searches. 11% potential increase in price ($65 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Everything you need to know about your flight from Jacksonville to Key Largo

Prices

Airlines

What is the cheapest time of day to fly from JAX to KE9?

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 35% on airfare.

What is the cheapest day to fly from Jacksonville to Key Largo?

Travelers seeking maximum savings on their Jacksonville to Key Largo flight should consider departing on Sunday evenings 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.

Reviews of airlines servicing Key Largo

Get a feel of what it's like to fly with Southwest,JetBlue, andAmerican 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

4,199 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Southwest

8.0

Very good

4,199 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

JetBlue

7.1

Good

3,040 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

American Airlines

7.0

Good

12,075 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Frontier

5.6

Fair

2,578 reviews

Southwest

8.0

Very good

4,199 reviews

Reviews

1 / 20

6.0

Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

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 18 flights from Jacksonville to Key Largo per day from 6 different airlines.
How popular is this Jacksonville to Key Largo flight route?
Within the past month, 70 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?
$64 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and American Airlines, with prices starting from $83 and $133, 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: Royal Air Maroc (85%), British Airways (83%), Iberia( 73%).
What are the cheapest flights from Jacksonville to Key Largo?
On average you can expect to pay $2,122 for a flight from Jacksonville to Key Largo. The cheapest flight overall is $133 while the most popular route, (Jacksonville - Miami) is currently priced at $136.
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.

See more FAQs

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Top 6 airlines flying from Jacksonville to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
Breeze Airways	Cheapest$97	Average$149	FlexibilityNo cancel fee	On-timeN/A
Frontier	Cheapest$138	Average$268	FlexibilityNo cancel fee	On-time62%
JetBlue	Cheapest$147	Average$313	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$156	Average$420	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$217	Average$455	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$252	Average$390	FlexibilityNo cancel fee	On-time63%

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Cheap flights from Jacksonville (JAX) to Key Largo, FL

Find cheap flights from Jacksonville to Key Largo with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Find flight deals from Jacksonville to Key Largo

Most accurate provider

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Cheapflights Insights

What is the cheapest time of day to fly from JAX to KE9?

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 35% on airfare.

What is the cheapest day to fly from Jacksonville to Key Largo?

Travelers seeking maximum savings on their Jacksonville to Key Largo flight should consider departing on Sunday evenings 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

The most flights from JAX to KE9 are scheduled on a Wednesday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

Reviews of airlines servicing Key Largo

Get a feel of what it's like to fly with Southwest,JetBlue, andAmerican 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.

Related info for your journey

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

How popular is this Jacksonville to Key Largo flight route?

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

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

What are the cheapest flights from Jacksonville to Key Largo?

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

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

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

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.

Complete your trip

Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Jacksonville to Key Largo by cabin class

Find flights from Jacksonville to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Jacksonville and Key Largo flights

Browse other Jacksonville and Key Largo flight options. Last updated on September 24, 2026.

Other flights from Jacksonville

Browse through other flights departing from Jacksonville. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.

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Top 6 airlines flying from Jacksonville to Key Largo

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