How far in advance should I book a flight from Islip, New York to Louisville?

Users have found that booking a flight from Islip, New York to Louisville at least 30 days early can save you up to 67% on average compared to booking a flight this week. If booking 30 days before your flight isn’t an option for you, users have found flights from Islip, New York to Louisville for as little as $256 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $388 for flights departing within the next 3 days.

What is the cheapest month to fly from Islip, New York to Louisville?

The best pricing can be found in the month of January. Prices to Louisville from Islip, New York average $313. You can even find prices in January for less than $313, as users have found deals to Louisville from as low as $199. The month of December appears to be one of the more expensive times to travel to Louisville from Islip, New York. Flying in the targeted month can save you up to 31%.

What is the cheapest time of day to fly from ISP to SDF?

When flying from Islip, New York to Louisville, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Islip, New York-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Louisville flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Islip, New York-Louisville 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 Islip, New York-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Islip to Louisville?

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

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

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

$122+ Save on Flights from Islip, NY to Louisville

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1. Tell us where you want to go

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Cheap flight deals from Islip to Louisville

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$287 (Southwest)
One-way from	$122 (Lucky2Go)
Popular in	December
Cheapest in	January
Average price	$279

Provider with most accurate pricing for Islip Long Island-Louisville Intl flight deals.

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Provider most trusted by Cheapflights users for Islip Long Island-Louisville Intl flights.

Search Deals

From Islip Long Island to Louisville Intl

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One-way flight from Islip Long Island to Louisville Intl

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Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in February 2025

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Find flight deals from Islip to Louisville

Cheapest flights from Islip to Louisville
Explore the most affordable flight options available from Islip to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Tue 3/116:30 amISP - SDF

1 stop6h 40mSouthwest

Thu 3/136:05 amSDF - ISP

1 stop4h 40mSouthwest

Deal found 2/20

$287

Thu 3/612:56 pmISP - SDF

1 stop25h 49mBreeze Airways

Mon 3/109:13 amSDF - ISP

1 stop8h 46mBreeze Airways

Deal found 2/19

$410

Best flights from Islip to Louisville
Discover carefully curated flight deals from Islip to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Tue 3/116:30 amISP - SDF

1 stop6h 40mSouthwest

Thu 3/136:05 amSDF - ISP

1 stop4h 40mSouthwest

Deal found 2/20

$287

Thu 3/612:56 pmISP - SDF

1 stop25h 49mBreeze Airways

Mon 3/109:13 amSDF - ISP

1 stop8h 46mBreeze Airways

Deal found 2/19

$410

Last-minute flights from Islip to Louisville
Discover last-minute flight deals from Islip to Louisville. Data last updated February 20, 2025 and is based on user searches.

Thu 3/612:56 pmISP - SDF

1 stop25h 49mBreeze Airways

Mon 3/109:13 amSDF - ISP

1 stop8h 46mBreeze Airways

Deal found 2/19

$410

Tue 3/116:30 amISP - SDF

1 stop6h 40mSouthwest

Thu 3/136:05 amSDF - ISP

1 stop4h 40mSouthwest

Deal found 2/20

$287

One-way flights from Islip to Louisville
Search for one-way flight options from Islip to Louisville. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Sun 4/277:25 pmISP - SDF

1 stop13h 06mMultiple Airlines

Deal found 2/19

$122

Tue 7/221:52 pmISP - SDF

2 stops23h 24mBreeze Airways

Deal found 2/20

$481

Find flights from Islip to Louisville within your budget

Fly from

Fly to

Route

Depart

Return

Price

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Tue 3/11

6:30 am-1:10 pm

1 stop6h 40m

Louisville Intl

Thu 3/13

6:05 am-10:45 am

1 stop4h 40m

$287

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Thu 3/6

12:56 pm-2:45 pm

1 stop25h 49m

Louisville Intl

Mon 3/10

9:13 am-5:59 pm

1 stop8h 46m

$410

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Sun 4/27

7:25 pm-8:31 am

1 stop13h 06m

$122

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Tue 7/22

1:52 pm-1:16 pm

2 stops23h 24m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Islip to Louisville

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Louisville in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust 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 Islip, New York-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Louisville flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Islip, New York-Louisville 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 Islip, New York-Louisville 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 Islip to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Islip 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.

Travel insights for flights from Islip to Louisville

Get recent, data-driven insights about flights from Islip to Louisville including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Louisville (average of $299). Flying from Islip, New York to Louisville in April is currently the most expensive (average of $369). 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 Louisville by month

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

If weather is an important factor for your trip to Louisville, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Louisville

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest

8.1

Very good

4,411 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Breeze Airways

8.1

Very good

150 reviews

Southwest

8.1

Very good

4,411 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Feb 2025

MCO - STL

Related info for your journey

Can I find deals for flights from Islip to Louisville that include hotel bookings?
Yes. In addition to deals on Islip to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Louisville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Louisville.
Can I find deals for business class flights from Islip to Louisville?
Yes. Cheapflights offers flight deals from Islip to Louisville 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 Islip, New York to Louisville?
Currently, January is the cheapest month in which you can book a flight from Islip, New York to Louisville (average of $299). Flying from Islip, New York to Louisville in April is currently the most expensive (average of $369). 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.

See more FAQs

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Corydon

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Bardstown

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$122+ Cheap flights from Islip, NY to Louisville (ISP - SDF)

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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Louisville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Louisville

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Islip to Louisville

Cheapest flights from Islip to LouisvilleExplore the most affordable flight options available from Islip to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from Islip to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from Islip to Louisville within your budget

Compare providers for flights from Islip to Louisville

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 Islip to Louisville in February.

Best time to book a flight from Islip to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Islip with our price prediction graph.

Travel insights for flights from Islip to Louisville

Get recent, data-driven insights about flights from Islip to Louisville including ideal travel times, pricing trends, and more.

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

Rainfall in Louisville by month

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

Temperature in Louisville by month

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

Reviews of airlines servicing Louisville

Related info for your journey

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

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

How can I find direct flights from Islip to Louisville?

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

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

Traveling to a place near Islip?

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Cheapest flights from Islip to Louisville
Explore the most affordable flight options available from Islip to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.