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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $68. Users have also found prices from $128 and $143 on American Airlines and Delta, respectively.

Weekly flight availability from Key Largo to Jacksonville

The most flights from KE9 to JAX are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

In terms of precipitation, rainfall in Jacksonville ranges from 2.1 - 8.2 inches per month. September is typically the wettest month, when rainfall can reach 8.2 in. November is typically the driest time to visit Jacksonville when rainfall is around 2.1 in.

If weather is an important factor for your trip to Jacksonville, 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 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

What are the cheapest flights from Key Largo to Jacksonville?

Looking for the cheapest flight from Key Largo to Jacksonville? While on average our users pay $395, our data indicates the cheapest price to be $113. The most popular route (Miami - Jacksonville), is priced around $180.

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

Consider Alaska Airlines (84%), GOL (83%) or Envoy Air (75%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Jacksonville.

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

Jacksonville (JAX), located 11.2 mi from the city center, is the airport you fly into when you book flights from Key Largo to Jacksonville. 5 airlines have flights to Jacksonville from Key Largo on a regular basis. Booking flights from Key Largo to Jacksonville should not be difficult; the airport handles an average of 13 inbound flights from Key Largo per day.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Key Largo to Jacksonville 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 Key Largo to Jacksonville

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Most accurate provider	FlightHub 3 stars
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Popular in	July
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Average price	$452

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Cheapest flight prices on average. 1% potential price decrease ($9 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 Key Largo to Jacksonville

Prices

Airlines

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

A simple way to save on the total cost of your ticket is to fly from Key Largo to Jacksonville in the afternoon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the evening.

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

Travelers seeking maximum savings on their Key Largo to Jacksonville flight should consider departing on Monday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Jacksonville

Read reviews from past customers who have flown American Airlines and Frontier from Key Largo to Jacksonville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.0

Good

12,075 reviews

Reviews

1 / 20

4.0

Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.

American Airlines

7.0

Good

12,075 reviews

American Airlines

7.0

Good

12,075 reviews

Reviews

1 / 20

4.0

Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.

Frontier

5.6

Fair

2,579 reviews

American Airlines

7.0

Good

12,075 reviews

Reviews

1 / 20

4.0

Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.

Related info for your journey

What airport do you fly into for flights to Jacksonville from Key Largo?
Jacksonville (JAX), located 11.2 mi from the city center, is the airport you fly into when you book flights from Key Largo to Jacksonville. 5 airlines have flights to Jacksonville from Key Largo on a regular basis. Booking flights from Key Largo to Jacksonville should not be difficult; the airport handles an average of 13 inbound flights from Key Largo per day.
What are the cheapest airlines to fly from Key Largo to Jacksonville one-way?
For one-way options, check prices for Frontier. According to our data, you can fly for as low as $68. Users have also found prices from $128 and $143 on American Airlines and Delta, respectively.
What are the most reliable airlines from Key Largo to Jacksonville?
Consider Alaska Airlines (84%), GOL (83%) or Envoy Air (75%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Jacksonville.
What are the cheapest flights from Key Largo to Jacksonville?
Looking for the cheapest flight from Key Largo to Jacksonville? While on average our users pay $395, our data indicates the cheapest price to be $113. The most popular route (Miami - Jacksonville), is priced around $180.
Can I find deals for flights from Key Largo to Jacksonville that include hotel bookings?
Yes. In addition to deals on Key Largo to Jacksonville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Key Largo to Jacksonville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Jacksonville.
Can I find deals for business class flights from Key Largo to Jacksonville?
Yes. Cheapflights offers flight deals from Key Largo to Jacksonville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 5 airlines flying from Key Largo to Jacksonville

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$77	Average$180	FlexibilityNo cancel fee	On-time62%
Breeze Airways	Cheapest$98	Average$121	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$143	Average$213	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$153	Average$316	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$159	Average$447	FlexibilityNo cancel fee	On-time71%

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

Find cheap flights from Key Largo to Jacksonville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Key Largo to Jacksonville

Most accurate provider

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Popular in

Cheapest in

Average price

Cheapflights Insights

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

A simple way to save on the total cost of your ticket is to fly from Key Largo to Jacksonville in the afternoon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the evening.

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

Travelers seeking maximum savings on their Key Largo to Jacksonville flight should consider departing on Monday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Key Largo to Jacksonville

The most flights from KE9 to JAX are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing Jacksonville

Read reviews from past customers who have flown American Airlines and Frontier from Key Largo to Jacksonville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

What are the cheapest flights from Key Largo to Jacksonville?

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

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

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

Traveling to a place near Jacksonville?

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Complete your trip

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Search flights from Key Largo to Jacksonville by cabin class

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

Other flights to Jacksonville

Explore flights to Jacksonville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.

Key Largo and Jacksonville flights

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