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 65% 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 September 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.

$120 Cheap Flights from Islip, New York to Florida Keys in 2026/27

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.

4:20 pm - 9:40 pmISP Islip Long Island-MIA Miami

5h 20m1 stop Baltimore/Washington

6:45 am - 12:10 pmMIA Miami-ISP Islip Long Island

5h 25m1 stop Baltimore/Washington

$240Southwest

Wed, Oct 21 - Wed, Oct 28

9:40 am - 5:30 pmISP Islip Long Island-MIA Miami

7h 50m1 stop Baltimore/Washington

5:35 pm - 10:40 pmMIA Miami-ISP Islip Long Island

5h 05m1 stop Baltimore/Washington

$240Southwest

Tue, Oct 20 - Wed, Oct 21

4:20 pm - 10:15 pmISP Islip Long Island-MIA Miami

5h 55m1 stop Orlando

6:25 am - 10:50 amMIA Miami-ISP Islip Long Island

4h 25m1 stop Orlando

$240Southwest

Tue, Oct 27 - Sat, Oct 31

9:40 am - 5:30 pmISP Islip Long Island-MIA Miami

7h 50m1 stop Baltimore/Washington

7:00 am - 3:45 pmMIA Miami-ISP Islip Long Island

8h 45m2 stops Orlando Baltimore/Washington

$246Southwest

Wed, Oct 21 - Wed, Oct 28

6:25 pm - 3:25 pmISP Islip Long Island-MIA Miami

21h 00m2 stops Orlando Atlanta Hartsfield-Jackson

10:55 pm - 5:31 pmMIA Miami-ISP Islip Long Island

18h 36m2 stops Atlanta Hartsfield-Jackson Orlando

$297Frontier

Sun, Oct 25 - Fri, Oct 30

12:00 pm - 9:24 pmISP Islip Long Island-MIA Miami

9h 24m1 stop Raleigh-Durham

4:05 pm - 2:22 pmMIA Miami-ISP Islip Long Island

22h 17m1 stop Raleigh-Durham

$297Multiple Airlines

Sat, Oct 17 - Thu, Oct 22

12:00 pm - 9:24 pmISP Islip Long Island-MIA Miami

9h 24m1 stop Raleigh-Durham

5:15 am - 5:30 pmMIA Miami-ISP Islip Long Island

12h 15m2 stops Atlanta Hartsfield-Jackson Orlando

$308Multiple Airlines

Sat, Oct 17 - Thu, Oct 22

6:25 pm - 9:50 pmISP Islip Long Island-MIA Miami

27h 25m2 stops Orlando Atlanta Hartsfield-Jackson

10:55 pm - 5:31 pmMIA Miami-ISP Islip Long Island

18h 36m2 stops Atlanta Hartsfield-Jackson Orlando

$311Frontier

Sun, Oct 25 - Fri, Oct 30

12:00 pm - 9:24 pmISP Islip Long Island-MIA Miami

9h 24m1 stop Raleigh-Durham

10:36 pm - 5:31 pmMIA Miami-ISP Islip Long Island

18h 55m2 stops Atlanta Hartsfield-Jackson Orlando

$311Multiple Airlines

Sat, Oct 17 - Wed, Oct 28

6:25 pm - 3:25 pmISP Islip Long Island-MIA Miami

21h 00m2 stops Orlando Atlanta Hartsfield-Jackson

5:05 am - 5:30 pmMIA Miami-ISP Islip Long Island

12h 25m2 stops Atlanta Hartsfield-Jackson Orlando

$340Frontier

Thu, Oct 22 - Sat, Oct 24

Cheap last minute flights

Enter your travel dates to find the best prices.

5:43 pm - 5:49 amISP Islip Long Island-MIA Miami

12h 06m2 stops Orlando San Juan Luis Munoz Marin Intl

9:43 pm - 4:58 pmMIA Miami-ISP Islip Long Island

19h 15m2 stops Atlanta Hartsfield-Jackson Orlando

$657Frontier

Fri, Sep 25 - Tue, Oct 6

5:43 pm - 9:38 pmISP Islip Long Island-MIA Miami

27h 55m2 stops Orlando Charlotte Douglas

9:30 pm - 4:58 pmMIA Miami-ISP Islip Long Island

19h 28m2 stops Atlanta Hartsfield-Jackson Orlando

$687Frontier

Fri, Sep 25 - Mon, Sep 28

5:43 pm - 8:33 pmISP Islip Long Island-MIA Miami

26h 50m2 stops Orlando Atlanta Hartsfield-Jackson

9:43 pm - 4:58 pmMIA Miami-ISP Islip Long Island

19h 15m2 stops Atlanta Hartsfield-Jackson Orlando

$699Frontier

Wed, Sep 23 - Sun, Sep 27

5:43 pm - 5:49 amISP Islip Long Island-MIA Miami

12h 06m2 stops Orlando San Juan Luis Munoz Marin Intl

9:43 pm - 4:58 pmMIA Miami-ISP Islip Long Island

19h 15m2 stops Atlanta Hartsfield-Jackson Orlando

$704Frontier

Wed, Sep 23 - Tue, Sep 29

3:20 pm - 8:20 pmISP Islip Long Island-MIA Miami

5h 00m1 stop Baltimore/Washington

4:05 pm - 9:10 pmMIA Miami-ISP Islip Long Island

5h 05m1 stop Baltimore/Washington

$732Southwest

Wed, Sep 23 - Tue, Sep 29

6:05 am - 1:35 pmISP Islip Long Island-MIA Miami

7h 30m1 stop Baltimore/Washington

7:10 am - 5:00 pmMIA Miami-ISP Islip Long Island

9h 50m2 stops Orlando Baltimore/Washington

$737Southwest

Wed, Sep 23 - Tue, Sep 29

7:31 am - 8:38 pmISP Islip Long Island-MIA Miami

13h 07m2 stops Boston Logan Intl Atlanta Hartsfield-Jackson

7:23 am - 4:58 pmMIA Miami-ISP Islip Long Island

33h 35m3 stops Baltimore/Washington Atlanta Hartsfield-Jackson Orlando

$866Multiple Airlines

Wed, Sep 23 - Sun, Sep 27

4:05 pm - 9:05 pmISP Islip Long Island-MIA Miami

5h 00m1 stop Baltimore/Washington

6:40 pm - 11:20 pmMIA Miami-ISP Islip Long Island

4h 40m1 stop Orlando

$907Southwest

Thu, Sep 24 - Sun, Sep 27

7:31 am - 8:33 pmISP Islip Long Island-MIA Miami

13h 02m2 stops Boston Logan Intl Atlanta Hartsfield-Jackson

9:43 pm - 4:58 pmMIA Miami-ISP Islip Long Island

19h 15m2 stops Atlanta Hartsfield-Jackson Orlando

$922Multiple Airlines

Thu, Sep 24 - Wed, Sep 30

7:31 am - 8:33 pmISP Islip Long Island-MIA Miami

13h 02m2 stops Boston Logan Intl Atlanta Hartsfield-Jackson

2:37 pm - 4:58 pmMIA Miami-ISP Islip Long Island

26h 21m3 stops Dallas/Fort Worth Atlanta Hartsfield-Jackson Orlando

$929Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

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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

Oct 20

ISP9:40 amIslip Long Island

7h 50m

1 stop

MIA5:30 pmMiami

Oct 21

MIA5:35 pmMiami

5h 05m

1 stop

ISP10:40 pmIslip Long Island

$240

Southwest

Oct 20

ISP9:40 amIslip Long Island

7h 50m

1 stop

MIA5:30 pmMiami

Oct 21

MIA7:00 amMiami

8h 45m

2 stops

ISP3:45 pmIslip Long Island

$246

Southwest

Oct 14

ISP12:50 pmIslip Long Island

4h 40m

1 stop

MIA5:30 pmMiami

Oct 21

MIA5:35 pmMiami

5h 05m

1 stop

ISP10:40 pmIslip Long Island

$252

Frontier flights from Islip, New York to Florida Keys

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

Frontier

Oct 25

ISP6:25 pmIslip Long Island

21h 00m

2 stops

MIA3:25 pmMiami

Oct 30

MIA10:55 pmMiami

18h 36m

2 stops

ISP5:31 pmIslip Long Island

$297

Frontier

Oct 22

ISP6:25 pmIslip Long Island

21h 00m

2 stops

MIA3:25 pmMiami

Oct 24

MIA5:05 amMiami

12h 25m

2 stops

ISP5:30 pmIslip Long Island

$340

Frontier

Oct 25

ISP6:25 pmIslip Long Island

27h 25m

2 stops

MIA9:50 pmMiami

Oct 30

MIA10:55 pmMiami

18h 36m

2 stops

ISP5:31 pmIslip Long Island

$345

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 Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Wed 10/21

4:20 pm-9:40 pm

1 stop5h 20m

Miami

Wed 10/28

6:45 am-12:10 pm

1 stop5h 25m

$240

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Tue 10/20

9:40 am-5:30 pm

1 stop7h 50m

Miami

Wed 10/21

5:35 pm-10:40 pm

1 stop5h 05m

$240

Quickest round-trip

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Tue 10/27

4:20 pm-10:15 pm

1 stop5h 55m

Miami

Sat 10/31

6:25 am-10:50 am

1 stop4h 25m

$240

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Wed 10/21

9:40 am-5:30 pm

1 stop7h 50m

Miami

Wed 10/28

7:00 am-3:45 pm

2 stops8h 45m

$246

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Sun 10/25

6:25 pm-3:25 pm

2 stops21h 00m

Miami

Fri 10/30

10:55 pm-5:31 pm

2 stops18h 36m

$297

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Sat 10/17

12:00 pm-9:24 pm

1 stop9h 24m

Miami

Thu 10/22

4:05 pm-2:22 pm

1 stop22h 17m

$297

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Sat 10/17

12:00 pm-9:24 pm

1 stop9h 24m

Miami

Thu 10/22

5:15 am-5:30 pm

2 stops12h 15m

$308

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Sun 10/25

6:25 pm-9:50 pm

2 stops27h 25m

Miami

Fri 10/30

10:55 pm-5:31 pm

2 stops18h 36m

$311

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Sat 10/17

12:00 pm-9:24 pm

1 stop9h 24m

Miami

Wed 10/28

10:36 pm-5:31 pm

2 stops18h 55m

$311

IslipMiami

ISP Islip Long Island - MIA Miami

ISPMIA

Islip Long Island

Thu 10/22

6:25 pm-3:25 pm

2 stops21h 00m

Miami

Sat 10/24

5:05 am-5:30 pm

2 stops12h 25m

$340

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 April is another great option to travel to Florida Keys, with average flight prices from Islip, New York averaging around $217.

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

Best Price Found	$120
Fastest flight time	4h 55m
Direct flights	None

The best one-way flight to Florida Keys from Islip, New York in the past 72 hours is $120. The best round-trip flight deal from Islip, New York to Florida Keys found on momondo in the last 72 hours is $240.

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 September 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 25.75% of the total bookings. Other popular models include Airbus A220-300 with 13.94%, Airbus A321neo with 10.95%, and Airbus A320neo with 9.14%.

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.