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Islip

$168+ Cheap flights from Louisville to Islip, NY (SDF - ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ISP
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Louisville to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$324
(Southwest)

One-way from

$168
(Southwest)

Popular in

October

Cheapest in

April

Average price

$359
From Louisville Intl to Islip Long Island
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One-way flight from Louisville Intl to Islip Long Island
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Highest demand for flights based on searches. 17% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Louisville to Islip

Cheapest flights from Louisville to Islip
Explore the most affordable flight options available from Louisville to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/205:30 amSDF - ISP
1 stop6h 25mSouthwest
Sun 8/246:00 amISP - SDF
1 stop6h 25mSouthwest
Deal found 6/10$324
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/112:16 pmSDF - ISP
3 stops25h 16mMultiple Airlines
Mon 8/410:44 amISP - SDF
3 stops32h 24mMultiple Airlines
Deal found 6/11$672
This KAYAK deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:57 pmSDF - ISP
2 stops15h 07mBreeze Airways
Sat 8/162:12 pmISP - SDF
3 stops25h 07mBreeze Airways
Deal found 6/10$695

Cheapflights Fare Finder

Customize your flight search to find flights from Louisville to Islip 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Louisville to Islip that are best for you.

Fly from

Louisville

Fly to

Islip

Route

Depart

Return

Price

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

Wed 8/20

5:30 am-11:55 am

1 stop6h 25m

Islip Long Island

Sun 8/24

6:00 am-12:25 pm

1 stop6h 25m

$324

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

Fri 8/1

12:16 pm-1:32 pm

3 stops25h 16m

Islip Long Island

Mon 8/4

10:44 am-7:08 pm

3 stops32h 24m

$672

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

Thu 8/14

6:57 pm-10:04 am

2 stops15h 07m

Islip Long Island

Sat 8/16

2:12 pm-3:19 pm

3 stops25h 07m

$695

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

Tue 6/24

6:00 pm-10:55 pm

1 stop4h 55m

$168

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

Mon 7/7

8:35 pm-1:15 pm

2 stops16h 40m

$270

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

Wed 6/25

3:07 pm-6:59 pm

3 stops27h 52m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Louisville to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Islip

What is the cheapest month to book a flight from Louisville to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from Louisville to Islip, New York (average of $108). Flying from Louisville to Islip, New York in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated June 12, 2025.
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
178 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,287 reviews
Breeze Airways
8.1
Very good
178 reviews

Overall

8.1

Food

6.7

Boarding

8.3

Comfort

8.2

Entertainment

6.6

Crew

8.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from Louisville to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Louisville to Islip, New York round-trip?

    Our cheapest airline available from Louisville to Islip, New York is Southwest. Our recent data shows that you can find tickets from as low as $324 on this airline. An additional option worth looking into is Breeze Airways, starting at $695. You may be able to fly from Louisville to Islip, New York for 17% less than the average price by searching for these airlines.

  • Can I find deals for flights from Louisville to Islip that include hotel bookings?

    Yes. In addition to deals on Louisville to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Islip.

  • Can I find deals for business class flights from Louisville to Islip?

    Yes. Cheapflights offers flight deals from Louisville to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Louisville to Islip, New York (average of $108). Flying from Louisville to Islip, New York in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top airline flying from Louisville to Islip

Discover the top airline that operate flights from Louisville to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$276Average$322FlexibilityNo cancel feeOn-time63%

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