What airlines fly to Florida Keys?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Florida Keys from Islip, New York according to our data. United Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 5 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Islip Long Island to Florida Keys?

Southwest is the most popular carrier operating from Islip Long Island to Florida Keys

When did momondo last update prices for flights from Islip Long Island Airport to Florida Keys?

Prices for flights from Islip Long Island Airport to Florida Keys are updated daily.

How many operators does momondo search for flights from Islip Long Island Airport to Florida Keys?

As of February 2026, there are 3 operators available to choose from for flights from Islip Long Island Airport to Florida Keys.

How old do you have to be to fly from Islip Long Island 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 Islip Long Island Airport to Florida Keys.

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

The travel and health documents required for your trip to Florida Keys can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Florida Keys. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$119 Cheap Flights from Islip to Florida Keys in 2026

1 adult

0 bags

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Find the cheapest flights from Islip, New York to Florida Keys

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:27 pm - 11:53 pm

ISP

MIA

6h 26m

1 stop

6:20 pm - 11:17 am

MIA

ISP

16h 57m

1 stop

$207Multiple Airlines

Tue, May 26 - Fri, May 29

4:07 pm - 5:57 pm

ISP

MIA

25h 50m

2 stops

5:15 am - 1:28 pm

MIA

ISP

8h 13m

1 stop

$226Multiple Airlines

Mon, May 11 - Fri, May 15

4:40 pm - 11:15 pm

ISP

MIA

6h 35m

1 stop

7:20 am - 1:50 pm

MIA

ISP

6h 30m

1 stop

$258Southwest

Sat, Apr 11 - Tue, Apr 14

5:15 pm - 9:55 pm

ISP

MIA

4h 40m

1 stop

12:35 pm - 6:30 pm

MIA

ISP

5h 55m

1 stop

$263Southwest

Wed, Apr 8 - Wed, Apr 22

11:57 am - 10:32 am

ISP

MIA

22h 35m

1 stop

7:04 pm - 11:16 am

MIA

ISP

40h 12m

2 stops

$264Multiple Airlines

Sat, May 9 - Sun, May 17

12:30 pm - 9:55 pm

ISP

MIA

9h 25m

2 stops

7:20 am - 11:55 am

MIA

ISP

4h 35m

1 stop

$268Southwest

Wed, Apr 8 - Wed, Apr 22

4:40 pm - 11:15 pm

ISP

MIA

6h 35m

1 stop

12:10 pm - 10:10 pm

MIA

ISP

10h 00m

2 stops

$271Southwest

Sat, Apr 11 - Tue, Apr 14

11:50 am - 10:21 am

ISP

EYW

22h 31m

2 stops

1:01 pm - 11:10 am

EYW

ISP

22h 09m

2 stops

$658Breeze Airways

Sat, Mar 21 - Tue, Mar 24

11:50 am - 10:21 am

ISP

EYW

22h 31m

2 stops

1:01 pm - 11:10 am

EYW

ISP

22h 09m

2 stops

$662Breeze Airways

Sat, Mar 21 - Tue, Mar 24

2:31 pm - 11:11 am

ISP

EYW

44h 40m

2 stops

9:49 am - 11:10 am

EYW

ISP

25h 21m

2 stops

$745Breeze Airways

Mon, Mar 9 - Fri, Mar 13

Southwest flights from Islip, New York to Florida Keys

Our best Southwest deals on Islip, New York to Florida Keys flight tickets

Southwest

Apr 11

ISP4:40 pmIslip Long Island

6h 35m

1 stop

MIA11:15 pmMiami

Apr 14

MIA7:20 amMiami

6h 30m

1 stop

ISP1:50 pmIslip Long Island

$258

Southwest

Apr 8

ISP5:15 pmIslip Long Island

4h 40m

1 stop

MIA9:55 pmMiami

Apr 22

MIA12:35 pmMiami

5h 55m

1 stop

ISP6:30 pmIslip Long Island

$263

Southwest

Apr 8

ISP12:30 pmIslip Long Island

9h 25m

2 stops

MIA9:55 pmMiami

Apr 22

MIA7:20 amMiami

4h 35m

1 stop

ISP11:55 amIslip Long Island

$268

Breeze Airways flights from Islip, New York to Florida Keys

Our best Breeze Airways deals on Islip, New York to Florida Keys flight tickets

Breeze Airways

Mar 21

ISP11:50 amIslip Long Island

22h 31m

2 stops

EYW10:21 amKey West

Mar 24

EYW1:01 pmKey West

22h 09m

2 stops

ISP11:10 amIslip Long Island

$658

Breeze Airways

Mar 21

ISP11:50 amIslip Long Island

22h 31m

2 stops

EYW10:21 amKey West

Mar 24

EYW1:01 pmKey West

22h 09m

2 stops

ISP11:10 amIslip Long Island

$662

Breeze Airways

Mar 1

ISP11:55 amIslip Long Island

21h 14m

2 stops

EYW9:09 amKey West

Mar 6

EYW9:49 amKey West

25h 21m

2 stops

ISP11:10 amIslip Long Island

$702

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Tue 5/26

5:27 pm-11:53 pm

1 stop6h 26m

Miami

Fri 5/29

6:20 pm-11:17 am

1 stop16h 57m

$207

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Mon 5/11

4:07 pm-5:57 pm

2 stops25h 50m

Miami

Fri 5/15

5:15 am-1:28 pm

1 stop8h 13m

$226

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sat 4/11

4:40 pm-11:15 pm

1 stop6h 35m

Miami

Tue 4/14

7:20 am-1:50 pm

1 stop6h 30m

$258

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Wed 4/8

5:15 pm-9:55 pm

1 stop4h 40m

Miami

Wed 4/22

12:35 pm-6:30 pm

1 stop5h 55m

$263

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sat 5/9

11:57 am-10:32 am

1 stop22h 35m

Miami

Sun 5/17

7:04 pm-11:16 am

2 stops40h 12m

$264

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Wed 4/8

12:30 pm-9:55 pm

2 stops9h 25m

Miami

Wed 4/22

7:20 am-11:55 am

1 stop4h 35m

$268

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sat 4/11

4:40 pm-11:15 pm

1 stop6h 35m

Miami

Tue 4/14

12:10 pm-10:10 pm

2 stops10h 00m

$271

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Sat 3/21

11:50 am-10:21 am

2 stops22h 31m

Key West

Tue 3/24

1:01 pm-11:10 am

2 stops22h 09m

$658

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Sat 3/21

11:50 am-10:21 am

2 stops22h 31m

Key West

Tue 3/24

1:01 pm-11:10 am

2 stops22h 09m

$662

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Mon 3/9

2:31 pm-11:11 am

2 stops44h 40m

Key West

Fri 3/13

9:49 am-11:10 am

2 stops25h 21m

$745

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 Islip, New York 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

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 Islip, New York averaging around $187.

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

The cheapest day to depart from Islip, New York to Florida Keys is on a Tuesday when prices can be found for as low as $297. The most expensive day to fly to Florida Keys is Saturday, with ticket prices averaging around $542.

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 Islip, New York to Florida Keys in the morning for as low as $377. 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 $542.

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

You are more likely to see cheaper flights to Florida Keys from Islip, New York when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $360 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Islip, New York for as low as $221 on momondo.

Can stopping save me money on Islip, New York to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between Islip, New York to Florida Keys.

Cheap Islip, New York to Florida Keys flight deals and tips

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

Fastest flight time	4h 50m
Direct flights	None

The fastest flight from Islip, New York to Florida Keys takes 4h 50m

There are no direct flights from Islip, New York to Florida Keys. There are no popular flight routes from Islip, New York to Florida Keys.

Search flight deals

When did momondo last update prices for flights from Islip Long Island Airport to Florida Keys?
Prices for flights from Islip Long Island Airport to Florida Keys are updated daily.
How many operators does momondo search for flights from Islip Long Island Airport to Florida Keys?
As of February 2026, there are 3 operators available to choose from for flights from Islip Long Island Airport to Florida Keys.
How old do you have to be to fly from Islip Long Island 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 Islip Long Island Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The travel and health documents required for your trip to Florida Keys can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Florida Keys. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Islip, New York to Florida Keys?
Based on momondo bookings for flights between Islip, New York and Florida Keys, the leading plane model is Airbus A320-100/200, making up 24.13% of the total bookings. Other popular models include Airbus A320neo with 11.90%, Airbus A321neo with 10.70%, and Airbus A220-300 with 8.43%.

Why use momondo?

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

It is quick and easy to find Islip 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 Islip to Florida Keys with flexible booking policies on momondo?

All flight searches from Islip to Florida Keys on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Islip to Florida Keys flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Florida Keys from Islip are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.