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Cheap flights from Islip, New York to Florida Keys from $89

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Florida Keys departing on 1/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Florida Keys

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:50 am - 4:56 pm
ISP
-
MIA
5h 06m
1 stop
Multiple Airlines Logo
1:38 pm - 12:49 am
MIA
-
ISP
35h 11m
2 stops
$216Multiple Airlines
Sat, Feb 28 - Wed, Mar 4
Multiple Airlines Logo
7:26 pm - 5:48 pm
ISP
-
MIA
22h 22m
2 stops
Multiple Airlines Logo
10:30 am - 1:31 pm
MIA
-
ISP
27h 01m
1 stop
$254Multiple Airlines
Thu, Jan 29 - Thu, Feb 5
Multiple Airlines Logo
11:55 am - 2:53 pm
ISP
-
EYW
26h 58m
2 stops
Multiple Airlines Logo
4:31 pm - 12:47 pm
EYW
-
ISP
20h 16m
1 stop
$271Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
7:53 pm - 10:59 am
ISP
-
MIA
15h 06m
2 stops
Multiple Airlines Logo
9:00 am - 1:31 pm
MIA
-
ISP
28h 31m
1 stop
$274Multiple Airlines
Sun, Feb 8 - Sun, Feb 15
Multiple Airlines Logo
2:31 pm - 11:50 am
ISP
-
MIA
21h 19m
2 stops
Multiple Airlines Logo
6:00 am - 1:31 pm
MIA
-
ISP
7h 31m
1 stop
$275Multiple Airlines
Mon, Feb 9 - Mon, Mar 9
Multiple Airlines Logo
2:31 pm - 4:56 pm
ISP
-
MIA
26h 25m
1 stop
Multiple Airlines Logo
6:59 pm - 8:48 am
MIA
-
ISP
37h 49m
2 stops
$287Multiple Airlines
Fri, Feb 27 - Sat, Mar 7
Multiple Airlines Logo
3:34 pm - 12:26 pm
ISP
-
EYW
20h 52m
1 stop
Multiple Airlines Logo
4:31 pm - 12:47 pm
EYW
-
ISP
20h 16m
1 stop
$299Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Southwest Logo
4:05 pm - 10:25 pm
ISP
-
MIA
6h 20m
1 stop
Southwest Logo
6:50 am - 11:20 am
MIA
-
ISP
4h 30m
1 stop
$301Southwest
Mon, Feb 9 - Mon, Feb 16
Southwest Logo
2:10 pm - 9:55 pm
ISP
-
MIA
7h 45m
2 stops
Southwest Logo
6:50 am - 11:20 am
MIA
-
ISP
4h 30m
1 stop
$306Southwest
Mon, Feb 9 - Mon, Feb 16
Southwest Logo
2:20 pm - 10:15 pm
ISP
-
MIA
7h 55m
2 stops
Southwest Logo
12:55 pm - 10:50 pm
MIA
-
ISP
9h 55m
2 stops
$312Southwest
Tue, Mar 10 - Tue, Mar 17

Southwest flights from Islip, New York to Florida Keys

Our best Southwest deals on Islip, New York to Florida Keys flight tickets
Southwest
Feb 9
ISP4:05 pmIslip Long Island
6h 20m
1 stop
MIA10:25 pmMiami
Feb 16
MIA6:50 amMiami
4h 30m
1 stop
ISP11:20 amIslip Long Island
$301
Southwest
Feb 9
ISP2:10 pmIslip Long Island
7h 45m
2 stops
MIA9:55 pmMiami
Feb 16
MIA6:50 amMiami
4h 30m
1 stop
ISP11:20 amIslip Long Island
$306
Southwest
Mar 10
ISP2:20 pmIslip Long Island
7h 55m
2 stops
MIA10:15 pmMiami
Mar 17
MIA12:55 pmMiami
9h 55m
2 stops
ISP10:50 pmIslip Long Island
$312

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 5
ISP7:26 pmIslip Long Island
17h 00m
2 stops
EYW12:26 pmKey West
Mar 12
EYW4:22 pmKey West
21h 09m
2 stops
ISP1:31 pmIslip Long Island
$609
Breeze Airways
Feb 1
ISP11:55 amIslip Long Island
21h 14m
2 stops
EYW9:09 amKey West
Feb 8
EYW9:46 amKey West
27h 45m
2 stops
ISP1:31 pmIslip Long Island
$622
Breeze Airways
Mar 4
ISP11:50 amIslip Long Island
27h 52m
2 stops
EYW3:42 pmKey West
Mar 8
EYW9:46 amKey West
34h 19m
2 stops
ISP8:05 pmIslip Long Island
$626

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Florida Keys that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 12, 2026.
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

Sat 2/28

11:50 am-4:56 pm

1 stop5h 06m

Miami

Wed 3/4

1:38 pm-12:49 am

2 stops35h 11m

$216

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Thu 1/29

7:26 pm-5:48 pm

2 stops22h 22m

Miami

Thu 2/5

10:30 am-1:31 pm

1 stop27h 01m

$254

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Thu 3/5

11:55 am-2:53 pm

2 stops26h 58m

Key West

Thu 3/12

4:31 pm-12:47 pm

1 stop20h 16m

$271

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Sun 2/8

7:53 pm-10:59 am

2 stops15h 06m

Miami

Sun 2/15

9:00 am-1:31 pm

1 stop28h 31m

$274

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Mon 2/9

2:31 pm-11:50 am

2 stops21h 19m

Miami

Mon 3/9

6:00 am-1:31 pm

1 stop7h 31m

$275

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Fri 2/27

2:31 pm-4:56 pm

1 stop26h 25m

Miami

Sat 3/7

6:59 pm-8:48 am

2 stops37h 49m

$287

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Thu 3/5

3:34 pm-12:26 pm

1 stop20h 52m

Key West

Thu 3/12

4:31 pm-12:47 pm

1 stop20h 16m

$299

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Mon 2/9

4:05 pm-10:25 pm

1 stop6h 20m

Miami

Mon 2/16

6:50 am-11:20 am

1 stop4h 30m

$301

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Mon 2/9

2:10 pm-9:55 pm

2 stops7h 45m

Miami

Mon 2/16

6:50 am-11:20 am

1 stop4h 30m

$306

IslipMiami

ISP - MIA

ISPMIA

Islip Long Island

Tue 3/10

2:20 pm-10:15 pm

2 stops7h 55m

Miami

Tue 3/17

12:55 pm-10:50 pm

2 stops9h 55m

$312

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Florida Keys from

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

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 $302. 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 $373. 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 $356 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 $271 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?

  • 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?

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.

An easier way to manage your Florida Keys trip

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Find better results for your trip to Florida Keys

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