What is the cheapest airline that flies from Jacksonville to Florida Keys?

Frontier and Allegiant Air are the most popular carriers operating from Jacksonville to Florida Keys

How many flights depart from Jacksonville to Florida Keys on average per week?

As of February 2026, there are 93 flights per week flying from Jacksonville to Florida Keys. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.

When did momondo last update prices for flights from Jacksonville Airport to Florida Keys?

Prices for flights from Jacksonville Airport to Florida Keys are refreshed on a daily basis.

How many operators does momondo search for flights from Jacksonville Airport to Florida Keys?

The number of operators available for flights from Jacksonville Airport to Florida Keys is 3 as of February 2026.

How old do you have to be to fly from Jacksonville Airport to Florida Keys?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Jacksonville Airport to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The travel and health documents you'll need for your trip to Florida Keys may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Florida Keys. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$68 Cheap Flights from Jacksonville to Florida Keys in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Jacksonville to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:18 pm - 8:07 pm

JAX

MIA

23h 49m

1 stop

3:16 pm - 3:34 pm

MIA

JAX

24h 18m

1 stop

$142Multiple Airlines

Wed, Mar 18 - Wed, Mar 25

4:29 pm - 12:47 am

JAX

MIA

8h 18m

1 stop

5:05 am - 3:34 pm

MIA

JAX

10h 29m

1 stop

$146Frontier

Thu, Mar 19 - Thu, Mar 26

8:18 pm - 10:34 am

JAX

MIA

14h 16m

1 stop

5:05 am - 7:33 pm

MIA

JAX

14h 28m

1 stop

$148Frontier

Wed, Mar 18 - Wed, Mar 25

4:29 pm - 12:47 am

JAX

MIA

8h 18m

1 stop

3:12 pm - 3:34 pm

MIA

JAX

24h 22m

1 stop

$149Multiple Airlines

Thu, Mar 12 - Wed, Mar 18

8:18 pm - 8:07 pm

JAX

MIA

23h 49m

1 stop

7:04 pm - 7:33 pm

MIA

JAX

24h 29m

1 stop

$150Multiple Airlines

Wed, Mar 11 - Tue, Mar 17

8:18 pm - 10:34 am

JAX

MIA

14h 16m

1 stop

5:05 am - 3:34 pm

MIA

JAX

10h 29m

1 stop

$151Frontier

Mon, Mar 9 - Thu, Mar 12

4:29 pm - 12:47 am

JAX

MIA

8h 18m

1 stop

5:05 am - 3:34 pm

MIA

JAX

10h 29m

1 stop

$156Frontier

Thu, Mar 12 - Thu, Mar 19

11:00 am - 4:30 pm

JAX

EYW

5h 30m

1 stop

6:45 am - 10:10 am

EYW

JAX

3h 25m

1 stop

$251American Airlines

Sat, Apr 18 - Wed, Apr 22

7:44 pm - 10:58 pm

JAX

EYW

3h 14m

1 stop

6:45 am - 10:10 am

EYW

JAX

3h 25m

1 stop

$289American Airlines

Fri, Apr 17 - Tue, Apr 21

5:30 am - 10:48 am

JAX

EYW

5h 18m

1 stop

6:25 pm - 11:59 pm

EYW

JAX

5h 34m

1 stop

$393Delta

Thu, Apr 2 - Sun, Apr 5

Southwest flights from Jacksonville to Florida Keys

Our best Southwest deals on Jacksonville to Florida Keys flight tickets

Southwest

Feb 24

JAX6:50 amJacksonville

6h 45m

1 stop

MIA1:35 pmMiami

Feb 26

MIA12:05 pmMiami

9h 55m

1 stop

JAX10:00 pmJacksonville

$232

Southwest

Feb 25

JAX7:35 amJacksonville

8h 35m

1 stop

MIA4:10 pmMiami

Feb 28

MIA6:00 amMiami

11h 55m

1 stop

JAX5:55 pmJacksonville

$236

Southwest

Feb 24

JAX1:40 pmJacksonville

7h 20m

1 stop

MIA9:00 pmMiami

Feb 26

MIA12:05 pmMiami

9h 55m

1 stop

JAX10:00 pmJacksonville

$252

Frontier flights from Jacksonville to Florida Keys

Our best Frontier deals on Jacksonville to Florida Keys flight tickets

Frontier

Mar 23

JAX5:58 pmJacksonville

6h 49m

1 stop

MIA12:47 amMiami

Mar 25

MIA7:04 pmMiami

20h 30m

1 stop

JAX3:34 pmJacksonville

$138

Frontier

Mar 19

JAX4:29 pmJacksonville

8h 18m

1 stop

MIA12:47 amMiami

Mar 26

MIA5:05 amMiami

10h 29m

1 stop

JAX3:34 pmJacksonville

$146

Frontier

Mar 18

JAX8:18 pmJacksonville

14h 16m

1 stop

MIA10:34 amMiami

Mar 25

MIA5:05 amMiami

14h 28m

1 stop

JAX7:33 pmJacksonville

$148

momondo Fare Finder

Use the filters below to find and compare flights from Jacksonville to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 3/18

8:18 pm-8:07 pm

1 stop23h 49m

Miami

Wed 3/25

3:16 pm-3:34 pm

1 stop24h 18m

$142

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 3/19

4:29 pm-12:47 am

1 stop8h 18m

Miami

Thu 3/26

5:05 am-3:34 pm

1 stop10h 29m

$146

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 3/18

8:18 pm-10:34 am

1 stop14h 16m

Miami

Wed 3/25

5:05 am-7:33 pm

1 stop14h 28m

$148

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 3/12

4:29 pm-12:47 am

1 stop8h 18m

Miami

Wed 3/18

3:12 pm-3:34 pm

1 stop24h 22m

$149

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Wed 3/11

8:18 pm-8:07 pm

1 stop23h 49m

Miami

Tue 3/17

7:04 pm-7:33 pm

1 stop24h 29m

$150

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Mon 3/9

8:18 pm-10:34 am

1 stop14h 16m

Miami

Thu 3/12

5:05 am-3:34 pm

1 stop10h 29m

$151

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 3/12

4:29 pm-12:47 am

1 stop8h 18m

Miami

Thu 3/19

5:05 am-3:34 pm

1 stop10h 29m

$156

JacksonvilleKey West

JAX - EYW

JAXEYW

Jacksonville

Sat 4/18

11:00 am-4:30 pm

1 stop5h 30m

Key West

Wed 4/22

6:45 am-10:10 am

1 stop3h 25m

$251

JacksonvilleKey West

JAX - EYW

JAXEYW

Jacksonville

Fri 4/17

7:44 pm-10:58 pm

1 stop3h 14m

Key West

Tue 4/21

6:45 am-10:10 am

1 stop3h 25m

$289

JacksonvilleKey West

JAX - EYW

JAXEYW

Jacksonville

Thu 4/2

5:30 am-10:48 am

1 stop5h 18m

Key West

Sun 4/5

6:25 pm-11:59 pm

1 stop5h 34m

$393

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Jacksonville to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The month of April is another great option to travel to Florida Keys, with average flight prices from Jacksonville averaging around $294.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from Jacksonville to Florida Keys is on a Monday when prices can be found for as low as $616. The most expensive day to fly to Florida Keys is Thursday, with ticket prices averaging around $707.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is in the morning. momondo users have found flights departing from Jacksonville to Florida Keys in the morning for as low as $587. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $980.

How far in advance should I book a flight to Florida Keys?

You are more likely to see cheaper flights to Florida Keys from Jacksonville when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $439 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Jacksonville for as low as $226 on momondo.

Can stopping save me money on Jacksonville to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between Jacksonville to Florida Keys.

Cheap Jacksonville to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Jacksonville to Florida Keys

Fastest flight time	1h 21m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from Jacksonville to Florida Keys takes 1h 21m

Direct flights go from Jacksonville to Florida Keys every day.

There are 3 airports in Florida Keys. From Jacksonville there are direct flights to Miami (MIA).

Search flight deals

When did momondo last update prices for flights from Jacksonville Airport to Florida Keys?
Prices for flights from Jacksonville Airport to Florida Keys are refreshed on a daily basis.
How many operators does momondo search for flights from Jacksonville Airport to Florida Keys?
The number of operators available for flights from Jacksonville Airport to Florida Keys is 3 as of February 2026.
How old do you have to be to fly from Jacksonville Airport to Florida Keys?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Jacksonville Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The travel and health documents you'll need for your trip to Florida Keys may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Florida Keys. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Jacksonville to Florida Keys?
Based on momondo bookings for flights between Jacksonville and Florida Keys, the leading plane model is Airbus A220-300, making up 13.33% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 900 with 11.03%, Boeing 737 MAX 8 with 10.11%, and Airbus A320-100/200 with 9.96%.

Best airlines flying from Jacksonville to Florida Keys

Compare and see reviews for airlines that fly from Jacksonville to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $286	Free Cancellation	Rating 7.2 11,307 reviews		Search American Airlines flights
Delta	PriceFrom $326	Free Cancellation	Rating 7.9 8,208 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Jacksonville to Florida Keys?

It is quick and easy to find Jacksonville to Florida Keys flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Florida Keys that suits you.

Can I find flights from Jacksonville to Florida Keys with flexible booking policies on momondo?

momondo does allow users to show only those flights to Florida Keys from Jacksonville which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Jacksonville to Florida Keys?

momondo provides multiple filters to help you find the best flight to Florida Keys from Jacksonville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Jacksonville to Florida Keys right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Jacksonville to Florida Keys now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Florida Keys and let you know when they change.