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Islip

$317+ Cheap flights from Louisville to Islip, NY (SDF - ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ISP
เม.ย. 1 — เม.ย. 81
อ. 4/1
อ. 4/8
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 มีนาคม 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(Southwest)

Popular in

December

Cheapest in

August

Average price

$272
Provider with most accurate pricing for Louisville Intl-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Islip Long Island flights.
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From Louisville Intl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 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 มีนาคม 27, 2025.

This Southwest deal was found by Cheapflights users on 3/26. 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.
ส. 5/36:15 amSDF - ISP
1 stop5h 25mSouthwest
จ. 5/126:10 pmISP - SDF
1 stop5h 05mSouthwest
Deal found 3/26$317
This Mytrip deal was found by Cheapflights users on 3/26. 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.
พฤ. 4/105:45 amSDF - ISP
2 stops38h 00mMultiple Airlines
จ. 4/148:25 pmISP - SDF
2 stops25h 52mMultiple Airlines
Deal found 3/26$577
This FlightHub deal was found by Cheapflights users on 3/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ศ. 7/258:35 pmSDF - ISP
1 stop16h 57mBreeze Airways
อา. 7/277:39 pmISP - SDF
2 stops13h 13mBreeze Airways
Deal found 3/26$889

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 มีนาคม 27, 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

ส. 5/3

6:15 am-11:40 am

1 stop5h 25m

Islip Long Island

จ. 5/12

6:10 pm-11:15 pm

1 stop5h 05m

$317

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

พฤ. 4/10

5:45 am-7:45 pm

2 stops38h 00m

Islip Long Island

จ. 4/14

8:25 pm-10:17 pm

2 stops25h 52m

$577

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

ศ. 7/25

8:35 pm-1:32 pm

1 stop16h 57m

Islip Long Island

อา. 7/27

7:39 pm-8:52 am

2 stops13h 13m

$889

LouisvilleIslip

SDF - ISP

SDFISP

Louisville Intl

ศ. 4/11

9:13 am-5:59 pm

1 stop8h 46m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Compare providers for flights from Louisville to Islip

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Islip in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Louisville-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 มีนาคม 27, 2025.
Southwest
8.1
Very good
4,273 reviews

Food

7.1

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Food

7.1

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Breeze Airways
8.0
Very good
156 reviews
Southwest
8.1
Very good
4,273 reviews

Food

7.1

Entertainment

7.6

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $317 on this airline. An additional option worth looking into is Breeze Airways, starting at $889.

  • 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 มีนาคม 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$276Average$340FlexibilityNo cancel feeOn-time63%
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