Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Islip to Louisville from $101

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 to Louisville departing on 9/29. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Islip to Louisville

Cheap round-trip flights

Logo
11:35 am - 9:19 amISP-SDF
21h 44m1 stop
Logo
10:14 am - 10:40 amSDF-ISP
24h 26m1 stop
$287
Find Deal
Wed, Sep 17 - Sun, Sep 21
Logo
11:40 am - 9:19 amISP-SDF
21h 39m1 stop
Logo
10:14 am - 10:40 amSDF-ISP
24h 26m1 stop
$349
Find Deal
Thu, Sep 18 - Sat, Sep 20
Southwest Logo
6:00 pm - 12:05 amISP-SDF
6h 05m1 stop
Southwest Logo
5:05 am - 11:55 amSDF-ISP
6h 50m1 stop
$432Southwest
Find Deal
Tue, Nov 25 - Mon, Dec 1
Logo
11:35 am - 9:19 amISP-SDF
21h 44m1 stop
Logo
10:14 am - 4:06 pmSDF-ISP
29h 52m2 stops
$487
Find Deal
Wed, Sep 17 - Sun, Sep 21
Southwest Logo
3:05 pm - 10:50 pmISP-SDF
7h 45m2 stops
Southwest Logo
6:35 am - 2:55 pmSDF-ISP
8h 20m2 stops
$537Southwest
Find Deal
Thu, Sep 18 - Sat, Sep 20
Breeze Airways Logo
8:21 pm - 2:15 pmISP-SDF
17h 54m3 stops
Breeze Airways Logo
7:42 pm - 6:28 pmSDF-ISP
22h 46m1 stop
$771Breeze Airways
Find Deal
Wed, Sep 17 - Sun, Sep 21
Breeze Airways Logo
8:21 pm - 2:15 pmISP-SDF
17h 54m3 stops
Breeze Airways Logo
7:42 pm - 8:07 pmSDF-ISP
24h 25m2 stops
$880Breeze Airways
Find Deal
Wed, Sep 17 - Sun, Sep 21

Southwest flights from Islip to Louisville

Our best Southwest deals on Islip to Louisville flight tickets
Southwest
Nov 25
ISP6:00 pmIslip Long Island
6h 05m
1 stop
SDF12:05 amLouisville Intl
Dec 1
SDF5:05 amLouisville Intl
6h 50m
1 stop
ISP11:55 amIslip Long Island
$432
Find similar
Southwest
Sep 18
ISP3:05 pmIslip Long Island
8h 25m
1 stop
SDF11:30 pmLouisville Intl
Sep 20
SDF6:35 amLouisville Intl
8h 20m
2 stops
ISP2:55 pmIslip Long Island
$448
Find similar
Southwest
Sep 12
ISP12:10 pmIslip Long Island
6h 25m
1 stop
SDF6:35 pmLouisville Intl
Sep 13
SDF5:50 amLouisville Intl
6h 15m
1 stop
ISP12:05 pmIslip Long Island
$469
Find similar

Breeze Airways flights from Islip to Louisville

Our best Breeze Airways deals on Islip to Louisville flight tickets
Breeze Airways
Sep 10
ISP7:32 pmIslip Long Island
23h 30m
1 stop
SDF7:02 pmLouisville Intl
Sep 14
SDF7:42 pmLouisville Intl
22h 46m
1 stop
ISP6:28 pmIslip Long Island
$723
Find similar
Breeze Airways
Sep 11
ISP7:36 pmIslip Long Island
13h 22m
2 stops
SDF8:58 amLouisville Intl
Sep 14
SDF7:42 pmLouisville Intl
22h 46m
1 stop
ISP6:28 pmIslip Long Island
$744
Find similar
Breeze Airways
Sep 17
ISP8:21 pmIslip Long Island
17h 54m
3 stops
SDF2:15 pmLouisville Intl
Sep 21
SDF7:42 pmLouisville Intl
22h 46m
1 stop
ISP6:28 pmIslip Long Island
$771
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip to Louisville 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 September 4, 2025.
Use the filters below to find and compare flights from Islip to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Wed 9/17

11:35 am-9:19 am

1 stop21h 44m

Louisville Intl

Sun 9/21

10:14 am-10:40 am

1 stop24h 26m

$287

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Thu 9/18

11:40 am-9:19 am

1 stop21h 39m

Louisville Intl

Sat 9/20

10:14 am-10:40 am

1 stop24h 26m

$349

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Tue 11/25

6:00 pm-12:05 am

1 stop6h 05m

Louisville Intl

Mon 12/1

5:05 am-11:55 am

1 stop6h 50m

$432

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Wed 9/17

11:35 am-9:19 am

1 stop21h 44m

Louisville Intl

Sun 9/21

10:14 am-4:06 pm

2 stops29h 52m

$487

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Thu 9/18

3:05 pm-10:50 pm

2 stops7h 45m

Louisville Intl

Sat 9/20

6:35 am-2:55 pm

2 stops8h 20m

$537

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Wed 9/17

8:21 pm-2:15 pm

3 stops17h 54m

Louisville Intl

Sun 9/21

7:42 pm-6:28 pm

1 stop22h 46m

$771

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Wed 9/17

8:21 pm-2:15 pm

3 stops17h 54m

Louisville Intl

Sun 9/21

7:42 pm-8:07 pm

2 stops24h 25m

$880

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Mon 9/29

5:05 pm-9:19 am

1 stop16h 14m

$101

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Sun 9/28

11:25 am-9:19 am

1 stop21h 54m

$131

IslipLouisville

ISP - SDF

ISPSDF

Islip Long Island

Sun 9/28

11:25 am-10:04 pm

2 stops34h 39m

$171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

See travel insights to Louisville from

How to get the cheapest flight ticket from Islip to Louisville

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 Louisville?

On average, the least expensive day to fly to Louisville from Islip is on a Friday. momondo users have found tickets for Friday departures for as low as $293. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Islip to Louisville on a Sunday will generally be more expensive and average around $361. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest Islip to Louisville flights are usually those with departure times in the morning. Our users have found flights to Louisville in the morning for as low as $311. In the evening is when there is more demand to fly to Louisville, so prices are often more expensive at around $325 per ticket.

When to book flights from Islip to Louisville

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

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

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

Direct flights

None
There are no direct flights from Islip to Louisville. There are no popular flight routes from Islip to Louisville.
Search flight deals

  • How far is Islip Long Island to Louisville Intl by plane?

    The straight-line distance from Islip Long Island to Louisville Intl is 689.3 mi. Flights usually cover this in 6h 05m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Louisville Intl Airport.

  • What documentation or ID do you need to fly to Louisville Intl Airport?

    The required travel and health documents for your Louisville Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Louisville Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Islip to Louisville?

Best airlines flying from Islip to Louisville

Compare and see reviews for airlines that fly from Islip to Louisville with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $296Free CancellationRating
8.0
4,241 reviews
Search Southwest flights

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
French Lick
Elizabethtown
Bardstown
West Baden Springs
Jeffersonville
Shepherdsville
New Albany
Corydon
Elizabeth
Charlestown
Springfield
Brandenburg
Georgetown

Why use momondo?

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

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

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

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

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

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

If you are not ready to book a flight from Islip to Louisville now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Louisville and let you know when they change.

An easier way to manage your Louisville trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 9/9
Tue 9/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States