When did momondo last update prices for flights from Louisville Intl Airport to Islip Long Island Airport?

Prices for flights from Louisville Intl Airport to Islip Long Island Airport are updated daily.

How many operators does momondo search for flights from Louisville Intl Airport to Islip Long Island Airport?

As of January 2026, there is 1 operator available to choose from for flights from Louisville Intl Airport to Islip Long Island Airport.

How old do you have to be to fly from Louisville Intl Airport to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The necessary travel and health documents for your Islip Long Island 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.

$386 Cheap Flights from Louisville to Islip in 2026

1 adult

0 bags

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Find the cheapest flights from Louisville to New York

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:26 pm - 1:31 pm

SDF

ISP

23h 05m

1 stop

3:34 pm - 2:38 pm

ISP

SDF

23h 04m

2 stops

$386Multiple Airlines

jue., feb. 12 - lun., feb. 16

5:30 am - 12:15 pm

SDF

ISP

6h 45m

1 stop

5:35 pm - 12:45 am

ISP

SDF

7h 10m

1 stop

$459Southwest

jue., feb. 12 - lun., feb. 16

6:30 am - 5:00 pm

SDF

ISP

10h 30m

2 stops

1:10 pm - 12:05 am

ISP

SDF

10h 55m

2 stops

$492Southwest

jue., feb. 12 - lun., feb. 16

5:30 am - 11:40 am

SDF

ISP

6h 10m

1 stop

6:00 pm - 12:10 am

ISP

SDF

6h 10m

1 stop

$591Southwest

sáb., abr. 4 - sáb., abr. 4

Southwest flights from Louisville to Islip, New York

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

Southwest

Feb 12

SDF5:30 amLouisville Intl

6h 45m

1 stop

ISP12:15 pmIslip Long Island

Feb 16

ISP5:35 pmIslip Long Island

7h 10m

1 stop

SDF12:45 amLouisville Intl

$459

Southwest

Feb 12

SDF6:30 amLouisville Intl

10h 30m

2 stops

ISP5:00 pmIslip Long Island

Feb 16

ISP1:10 pmIslip Long Island

10h 55m

2 stops

SDF12:05 amLouisville Intl

$492

Southwest

Apr 4

SDF5:30 amLouisville Intl

6h 10m

1 stop

ISP11:40 amIslip Long Island

Apr 4

ISP6:00 pmIslip Long Island

6h 10m

1 stop

SDF12:10 amLouisville Intl

$591

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

jue. 2/12

2:26 pm-1:31 pm

1 stop23h 05m

Islip Long Island

lun. 2/16

3:34 pm-2:38 pm

2 stops23h 04m

$386

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

jue. 2/12

5:30 am-12:15 pm

1 stop6h 45m

Islip Long Island

lun. 2/16

5:35 pm-12:45 am

1 stop7h 10m

$459

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

jue. 2/12

6:30 am-5:00 pm

2 stops10h 30m

Islip Long Island

lun. 2/16

1:10 pm-12:05 am

2 stops10h 55m

$492

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

sáb. 4/4

5:30 am-11:40 am

1 stop6h 10m

Islip Long Island

sáb. 4/4

6:00 pm-12:10 am

1 stop6h 10m

$591

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

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 airlines fly to Islip, New York?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Islip, New York from Louisville according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When to book flights from Louisville to Islip, New York

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

Estimated round-trip price

Cheap Louisville to Islip, New York (SDF to ISP) flight deals and tips

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

Fastest flight time	6h 10m
Direct flights	None

The fastest flight from Louisville to Islip, New York takes 6h 10m

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

Search flight deals

How far is Louisville Intl to Islip Long Island by plane?
A flight from Louisville Intl to Islip Long Island will travel around 689.3 mi. In terms of flight time, this usually takes a little over 6h 10m.
When did momondo last update prices for flights from Louisville Intl Airport to Islip Long Island Airport?
Prices for flights from Louisville Intl Airport to Islip Long Island Airport are updated daily.
How many operators does momondo search for flights from Louisville Intl Airport to Islip Long Island Airport?
As of January 2026, there is 1 operator available to choose from for flights from Louisville Intl Airport to Islip Long Island Airport.
How old do you have to be to fly from Louisville Intl Airport to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The necessary travel and health documents for your Islip Long Island 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.
What is the most popular airline from Louisville to Islip, New York?
Based on momondo bookings for flights between Louisville and Islip, New York, the leading airline is Southwest, making up 100% of the total bookings.

Best airlines flying from Louisville to Islip, New York

Compare and see reviews for airlines that fly from Louisville to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $276	Free Cancellation	Rating 8.0 4,267 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Louisville to Islip. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Islip from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Louisville to Islip?

Once all potential Louisville to Islip flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Islip from Louisville 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.