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

Southwest, Breeze Airways, 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 July 2026, there are 103 flights per week flying from Jacksonville to Florida Keys. The most common day of the week flights depart is Fri, 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 5 as of July 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.

$72 Cheap Flights from Jacksonville to Florida Keys in 2026

Discover deals from 900+ travel sites with momondo.

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.

7:05 pm - 1:32 pm

JAX

MIA

18h 27m

1 stop

11:10 am - 6:10 pm

MIA

JAX

7h 00m

1 stop

$137Frontier

Thu, Aug 20 - Mon, Aug 24

7:05 pm - 1:32 pm

JAX

MIA

18h 27m

1 stop

11:10 am - 6:10 pm

MIA

JAX

7h 00m

1 stop

$138Frontier

Thu, Aug 20 - Mon, Aug 24

6:29 pm - 11:58 pm

JAX

MIA

5h 29m

1 stop

8:10 am - 6:10 pm

MIA

JAX

10h 00m

1 stop

$141Frontier

Sat, Aug 15 - Sat, Aug 22

6:29 pm - 1:53 pm

JAX

MIA

19h 24m

1 stop

10:50 am - 5:34 pm

MIA

JAX

6h 44m

1 stop

$142Frontier

Mon, Aug 10 - Thu, Aug 13

6:29 pm - 5:47 pm

JAX

MIA

23h 18m

1 stop

11:10 am - 6:10 pm

MIA

JAX

7h 00m

1 stop

$143Frontier

Thu, Aug 13 - Thu, Aug 20

7:05 pm - 1:32 pm

JAX

MIA

18h 27m

1 stop

11:10 am - 6:10 pm

MIA

JAX

7h 00m

1 stop

$144Frontier

Thu, Aug 20 - Mon, Aug 24

6:29 pm - 8:29 pm

JAX

MIA

26h 00m

1 stop

11:10 am - 6:10 pm

MIA

JAX

7h 00m

1 stop

$145Frontier

Fri, Aug 14 - Thu, Aug 20

6:29 pm - 8:29 pm

JAX

MIA

26h 00m

1 stop

11:10 am - 6:10 pm

MIA

JAX

7h 00m

1 stop

$146Frontier

Fri, Aug 14 - Tue, Aug 18

8:45 pm - 6:37 pm

JAX

EYW

21h 52m

1 stop

7:53 pm - 6:10 pm

EYW

JAX

22h 17m

2 stops

$238Multiple Airlines

Thu, Aug 13 - Thu, Aug 20

2:13 pm - 8:09 am

JAX

EYW

17h 56m

1 stop

8:59 am - 9:41 am

EYW

JAX

24h 42m

1 stop

$309Allegiant Air

Tue, Dec 22 - Wed, Dec 30

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

Frontier flights from Jacksonville to Florida Keys

Our best Frontier deals on Jacksonville to Florida Keys flight tickets

Frontier

Aug 20

JAX7:05 pmJacksonville

18h 27m

1 stop

MIA1:32 pmMiami

Aug 24

MIA11:10 amMiami

7h 00m

1 stop

JAX6:10 pmJacksonville

$137

Frontier

Aug 20

JAX7:05 pmJacksonville

18h 27m

1 stop

MIA1:32 pmMiami

Aug 24

MIA11:10 amMiami

7h 00m

1 stop

JAX6:10 pmJacksonville

$138

Frontier

Aug 15

JAX6:29 pmJacksonville

5h 29m

1 stop

MIA11:58 pmMiami

Aug 22

MIA8:10 amMiami

10h 00m

1 stop

JAX6:10 pmJacksonville

$141

Delta flights from Jacksonville to Florida Keys

Our best Delta deals on Jacksonville to Florida Keys flight tickets

Delta

Jul 30

JAX9:41 amJacksonville

5h 14m

1 stop

MIA2:55 pmMiami

Aug 1

MIA6:00 amMiami

6h 00m

1 stop

JAX12:00 pmJacksonville

$277

Delta

Jul 31

JAX2:50 pmJacksonville

7h 09m

1 stop

MIA9:59 pmMiami

Aug 3

MIA7:00 amMiami

4h 44m

1 stop

JAX11:44 amJacksonville

$287

Delta

Oct 29

JAX3:53 pmJacksonville

3h 58m

1 stop

EYW7:51 pmKey West

Nov 1

EYW7:40 amKey West

7h 08m

1 stop

JAX2:48 pmJacksonville

$403

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 8/20

7:05 pm-1:32 pm

1 stop18h 27m

Miami

Mon 8/24

11:10 am-6:10 pm

1 stop7h 00m

$137

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 8/20

7:05 pm-1:32 pm

1 stop18h 27m

Miami

Mon 8/24

11:10 am-6:10 pm

1 stop7h 00m

$138

Quickest round-trip

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Sat 8/15

6:29 pm-11:58 pm

1 stop5h 29m

Miami

Sat 8/22

8:10 am-6:10 pm

1 stop10h 00m

$141

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Mon 8/10

6:29 pm-1:53 pm

1 stop19h 24m

Miami

Thu 8/13

10:50 am-5:34 pm

1 stop6h 44m

$142

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 8/13

6:29 pm-5:47 pm

1 stop23h 18m

Miami

Thu 8/20

11:10 am-6:10 pm

1 stop7h 00m

$143

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Thu 8/20

7:05 pm-1:32 pm

1 stop18h 27m

Miami

Mon 8/24

11:10 am-6:10 pm

1 stop7h 00m

$144

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 8/14

6:29 pm-8:29 pm

1 stop26h 00m

Miami

Thu 8/20

11:10 am-6:10 pm

1 stop7h 00m

$145

JacksonvilleMiami

JAX - MIA

JAXMIA

Jacksonville

Fri 8/14

6:29 pm-8:29 pm

1 stop26h 00m

Miami

Tue 8/18

11:10 am-6:10 pm

1 stop7h 00m

$146

JacksonvilleKey West

JAX - EYW

JAXEYW

Jacksonville

Thu 8/13

8:45 pm-6:37 pm

1 stop21h 52m

Key West

Thu 8/20

7:53 pm-6:10 pm

2 stops22h 17m

$238

JacksonvilleKey West

JAX - EYW

JAXEYW

Jacksonville

Tue 12/22

2:13 pm-8:09 am

1 stop17h 56m

Key West

Wed 12/30

8:59 am-9:41 am

1 stop24h 42m

$309

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 December is another great option to travel to Florida Keys, with average flight prices from Jacksonville averaging around $483.

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 Friday when prices can be found for as low as $635. The most expensive day to fly to Florida Keys is Tuesday, with ticket prices averaging around $716.

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 $616. 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 $1,053.

How far in advance should I book a flight from Jacksonville 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 $514 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 $387 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 14m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from Jacksonville to Florida Keys takes 1h 14m

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

Frequently asked questions about flying from Jacksonville to Florida Keys

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 5 as of July 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 A320-100/200, making up 14.64% of the total bookings. Other popular models include Airbus A220-300 with 11.48%, Embraer 175 with 11.14%, and Airbus A319 with 8.72%.

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 $288	Free Cancellation	Rating 7.1 11,828 reviews		Search American Airlines flights
Delta	PriceFrom $326	Free Cancellation	Rating 7.8 8,478 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.