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Cheap flights from Islip, New York to Key West from $355

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 Key West departing on 7/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Islip, New York to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:43 pm - 11:25 am
ISP
-
EYW
38h 42m
2 stops
Multiple Airlines Logo
12:07 pm - 9:53 am
EYW
-
ISP
21h 46m
1 stop
$391Multiple Airlines
Fri, Jul 24 - Fri, Jul 31
Multiple Airlines Logo
10:57 am - 11:25 am
ISP
-
EYW
24h 28m
1 stop
Multiple Airlines Logo
12:05 pm - 9:53 am
EYW
-
ISP
21h 48m
1 stop
$449Multiple Airlines
Wed, Jul 15 - Sun, Jul 19
Multiple Airlines Logo
11:57 am - 11:25 am
ISP
-
EYW
23h 28m
2 stops
Multiple Airlines Logo
12:05 pm - 9:53 am
EYW
-
ISP
21h 48m
1 stop
$451Multiple Airlines
Wed, Jul 15 - Sun, Jul 19
Multiple Airlines Logo
7:46 pm - 12:34 pm
ISP
-
EYW
16h 48m
1 stop
Multiple Airlines Logo
12:07 pm - 1:33 pm
EYW
-
ISP
25h 26m
2 stops
$464Multiple Airlines
Mon, Jul 13 - Fri, Jul 17
Multiple Airlines Logo
7:46 pm - 12:34 pm
ISP
-
EYW
16h 48m
1 stop
Multiple Airlines Logo
11:07 am - 11:17 am
EYW
-
ISP
24h 10m
1 stop
$486Multiple Airlines
Mon, Jul 13 - Fri, Jul 17
Multiple Airlines Logo
3:43 pm - 10:19 am
ISP
-
EYW
18h 36m
1 stop
Multiple Airlines Logo
11:59 am - 11:20 am
EYW
-
ISP
23h 21m
1 stop
$529Multiple Airlines
Wed, Nov 18 - Mon, Nov 23
Multiple Airlines Logo
8:55 pm - 9:24 am
ISP
-
EYW
12h 29m
1 stop
Multiple Airlines Logo
1:16 pm - 11:20 am
EYW
-
ISP
22h 04m
2 stops
$548Multiple Airlines
Fri, Oct 16 - Tue, Oct 20
Multiple Airlines Logo
10:57 am - 11:25 am
ISP
-
EYW
24h 28m
1 stop
Multiple Airlines Logo
7:53 pm - 12:20 pm
EYW
-
ISP
16h 27m
3 stops
$628Multiple Airlines
Wed, Jul 15 - Sun, Jul 19
Breeze Airways Logo
5:23 pm - 12:19 pm
ISP
-
EYW
18h 56m
2 stops
Breeze Airways Logo
11:59 am - 11:20 am
EYW
-
ISP
23h 21m
1 stop
$679Breeze Airways
Thu, Sep 10 - Mon, Sep 14
Breeze Airways Logo
9:39 am - 9:24 am
ISP
-
EYW
23h 45m
2 stops
Breeze Airways Logo
1:16 pm - 11:20 am
EYW
-
ISP
22h 04m
2 stops
$713Breeze Airways
Fri, Oct 2 - Tue, Oct 6

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Breeze Airways flights from Islip, New York to Key West

Our best Breeze Airways deals on Islip, New York to Key West flight tickets
Breeze Airways
Sep 10
ISP5:23 pmIslip Long Island
18h 56m
2 stops
EYW12:19 pmKey West
Sep 14
EYW11:59 amKey West
23h 21m
1 stop
ISP11:20 amIslip Long Island
$679
Breeze Airways
Jul 16
ISP5:50 pmIslip Long Island
18h 41m
2 stops
EYW12:31 pmKey West
Jul 20
EYW1:11 pmKey West
24h 17m
2 stops
ISP1:28 pmIslip Long Island
$689
Breeze Airways
Oct 2
ISP9:39 amIslip Long Island
23h 45m
2 stops
EYW9:24 amKey West
Oct 6
EYW1:16 pmKey West
22h 04m
2 stops
ISP11:20 amIslip Long Island
$713

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Key West 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 July 2, 2026.
Use the filters below to find and compare flights from Islip, New York to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Fri 7/24

8:43 pm-11:25 am

2 stops38h 42m

Key West

Fri 7/31

12:07 pm-9:53 am

1 stop21h 46m

$391

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Wed 7/15

10:57 am-11:25 am

1 stop24h 28m

Key West

Sun 7/19

12:05 pm-9:53 am

1 stop21h 48m

$449

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Wed 7/15

11:57 am-11:25 am

2 stops23h 28m

Key West

Sun 7/19

12:05 pm-9:53 am

1 stop21h 48m

$451

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Mon 7/13

7:46 pm-12:34 pm

1 stop16h 48m

Key West

Fri 7/17

12:07 pm-1:33 pm

2 stops25h 26m

$464

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Mon 7/13

7:46 pm-12:34 pm

1 stop16h 48m

Key West

Fri 7/17

11:07 am-11:17 am

1 stop24h 10m

$486

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Wed 11/18

3:43 pm-10:19 am

1 stop18h 36m

Key West

Mon 11/23

11:59 am-11:20 am

1 stop23h 21m

$529
Quickest round-trip

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Fri 10/16

8:55 pm-9:24 am

1 stop12h 29m

Key West

Tue 10/20

1:16 pm-11:20 am

2 stops22h 04m

$548

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Wed 7/15

10:57 am-11:25 am

1 stop24h 28m

Key West

Sun 7/19

7:53 pm-12:20 pm

3 stops16h 27m

$628

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Thu 9/10

5:23 pm-12:19 pm

2 stops18h 56m

Key West

Mon 9/14

11:59 am-11:20 am

1 stop23h 21m

$679

IslipKey West

ISP - EYW

ISPEYW

Islip Long Island

Fri 10/2

9:39 am-9:24 am

2 stops23h 45m

Key West

Tue 10/6

1:16 pm-11:20 am

2 stops22h 04m

$713

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 Key West from

How to get the cheapest flight ticket from Islip, New York to Key West

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 day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from Islip, New York is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $428. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Islip, New York to Key West for around $586.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is in the morning. momondo users have found flights departing from Islip, New York to Key West in the morning for as low as $489. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly at noon, with an average ticket price of $517. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Islip, New York to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Key West (ISP to EYW) flight deals and tips

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

Fastest flight time

12h 29m

Direct flights

None
The fastest flight from Islip, New York to Key West takes 12h 29m
There are no direct flights from Islip, New York to Key West. There are no popular flight routes from Islip, New York to Key West.
Search flight deals

Frequently asked questions about flying from Islip, New York to Key West

  • How far is Islip Long Island to Key West by plane?

    There are 1221.8 mi between Islip Long Island and Key West. Flights usually cover this in 12h 29m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Islip Long Island Airport to Key West Airport?

    Prices for flights from Islip Long Island Airport to Key West Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Key West Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The necessary travel and health documents for your Key West Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Key West?

It is quick and easy to find Islip to Key West 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 Key West that suits you.

Can I find flights from Islip to Key West with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Key West from Islip with this policy.

How can momondo help me find flights from Islip to Key West?

Once you have performed a search for Islip to Key West 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 Key West right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Islip to Key West flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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