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

Southwest, Frontier, and Breeze Airways are the most popular carriers operating from Islip Long Island to Florida Keys

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 63% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

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 July 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.

$135 Cheap Flights from Islip, New York to Florida Keys in 2026

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.

4:05 pm - 9:00 pm

ISP

MIA

4h 55m

1 stop

7:00 am - 11:55 am

MIA

ISP

4h 55m

1 stop

$273Southwest

Thu, Aug 27 - Thu, Sep 3

2:00 pm - 7:20 pm

ISP

MIA

5h 20m

1 stop

7:00 am - 1:20 pm

MIA

ISP

6h 20m

1 stop

$273Southwest

Sat, Sep 5 - Sat, Sep 12

2:00 pm - 7:20 pm

ISP

MIA

5h 20m

1 stop

7:00 am - 1:20 pm

MIA

ISP

6h 20m

1 stop

$273Southwest

Sat, Sep 12 - Sat, Sep 19

5:40 pm - 10:35 pm

ISP

MIA

4h 55m

1 stop

6:10 pm - 11:10 pm

MIA

ISP

5h 00m

1 stop

$273Southwest

Mon, Oct 12 - Thu, Oct 15

4:05 pm - 9:00 pm

ISP

MIA

4h 55m

1 stop

7:30 am - 12:10 pm

MIA

ISP

4h 40m

1 stop

$273Southwest

Thu, Aug 20 - Wed, Aug 26

4:30 pm - 9:20 pm

ISP

MIA

4h 50m

1 stop

6:30 am - 12:05 pm

MIA

ISP

5h 35m

1 stop

$274Southwest

Sun, Sep 6 - Sat, Sep 12

3:10 pm - 11:05 pm

ISP

MIA

7h 55m

2 stops

6:10 pm - 11:10 pm

MIA

ISP

5h 00m

1 stop

$278Southwest

Mon, Oct 12 - Thu, Oct 15

1:15 pm - 10:10 pm

ISP

MIA

8h 55m

2 stops

6:30 am - 12:05 pm

MIA

ISP

5h 35m

1 stop

$278Southwest

Thu, Sep 17 - Sat, Sep 19

10:57 am - 11:35 am

ISP

EYW

24h 38m

1 stop

11:46 am - 5:10 pm

EYW

ISP

29h 24m

2 stops

$325Multiple Airlines

Wed, Aug 26 - Wed, Sep 2

7:09 pm - 11:27 am

ISP

EYW

16h 18m

1 stop

10:59 am - 11:20 am

EYW

ISP

48h 21m

2 stops

$326Multiple Airlines

Sun, Sep 6 - Sun, Sep 13

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Southwest flights from Islip, New York to Florida Keys

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

Southwest

Aug 20

ISP4:05 pmIslip Long Island

4h 55m

1 stop

MIA9:00 pmMiami

Aug 26

MIA7:30 amMiami

4h 40m

1 stop

ISP12:10 pmIslip Long Island

$273

Southwest

Sep 6

ISP4:30 pmIslip Long Island

4h 50m

1 stop

MIA9:20 pmMiami

Sep 12

MIA6:30 amMiami

5h 35m

1 stop

ISP12:05 pmIslip Long Island

$274

Southwest

Aug 20

ISP1:15 pmIslip Long Island

8h 50m

2 stops

MIA10:05 pmMiami

Aug 26

MIA7:30 amMiami

4h 40m

1 stop

ISP12:10 pmIslip Long Island

$278

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

Sep 6

ISP5:50 pmIslip Long Island

18h 41m

2 stops

EYW12:31 pmKey West

Sep 13

EYW10:59 amKey West

24h 13m

2 stops

ISP11:12 amIslip Long Island

$639

Breeze Airways

Oct 1

ISP10:57 amIslip Long Island

24h 22m

1 stop

EYW11:19 amKey West

Oct 5

EYW11:59 amKey West

23h 21m

1 stop

ISP11:20 amIslip Long Island

$658

Breeze Airways

Oct 1

ISP10:57 amIslip Long Island

24h 22m

1 stop

EYW11:19 amKey West

Oct 5

EYW10:59 amKey West

25h 59m

2 stops

ISP12:58 pmIslip Long Island

$694

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

Cheapest round-trip

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Thu 8/27

4:05 pm-9:00 pm

1 stop4h 55m

Miami

Thu 9/3

7:00 am-11:55 am

1 stop4h 55m

$273

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sat 9/5

2:00 pm-7:20 pm

1 stop5h 20m

Miami

Sat 9/12

7:00 am-1:20 pm

1 stop6h 20m

$273

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sat 9/12

2:00 pm-7:20 pm

1 stop5h 20m

Miami

Sat 9/19

7:00 am-1:20 pm

1 stop6h 20m

$273

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Mon 10/12

5:40 pm-10:35 pm

1 stop4h 55m

Miami

Thu 10/15

6:10 pm-11:10 pm

1 stop5h 00m

$273

Quickest round-trip

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Thu 8/20

4:05 pm-9:00 pm

1 stop4h 55m

Miami

Wed 8/26

7:30 am-12:10 pm

1 stop4h 40m

$273

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sun 9/6

4:30 pm-9:20 pm

1 stop4h 50m

Miami

Sat 9/12

6:30 am-12:05 pm

1 stop5h 35m

$274

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Mon 10/12

3:10 pm-11:05 pm

2 stops7h 55m

Miami

Thu 10/15

6:10 pm-11:10 pm

1 stop5h 00m

$278

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Thu 9/17

1:15 pm-10:10 pm

2 stops8h 55m

Miami

Sat 9/19

6:30 am-12:05 pm

1 stop5h 35m

$278

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Wed 8/26

10:57 am-11:35 am

1 stop24h 38m

Key West

Wed 9/2

11:46 am-5:10 pm

2 stops29h 24m

$325

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Sun 9/6

7:09 pm-11:27 am

1 stop16h 18m

Key West

Sun 9/13

10:59 am-11:20 am

2 stops48h 21m

$326

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 $207.

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 55m
Direct flights	None

The fastest flight from Islip, New York to Florida Keys takes 4h 55m

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

Frequently asked questions about flying from Islip, New York 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 July 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 25.74% of the total bookings. Other popular models include Airbus A220-300 with 14.05%, Airbus A321neo with 10.98%, and Boeing 737 MAX 8 with 10.03%.

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.