HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$121+ Cheap flights from Houston to Islip, NY (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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ISP
Aug 2 — Aug 91
Sun 8/2
Sun 8/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Houston to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Houston to Islip

Cheapest flights from Houston to Islip
Explore the most affordable flight options available from Houston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:23 pm
IAH
-
ISP
1 stop13h 30m
Multiple Airlines
Mon 8/108:43 pm
ISP
-
IAH
2 stops37h 02m
Multiple Airlines
Deal found 7/1$327
This Expedia deal was found by Cheapflights users on 6/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:00 pm
IAH
-
ISP
1 stop7h 44m
Multiple Airlines
Fri 7/2410:57 am
ISP
-
IAH
1 stop22h 48m
Multiple Airlines
Deal found 6/30$339
This Southwest deal was found by Cheapflights users on 6/30. 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 7/228:10 pm
HOU
-
ISP
1 stop11h 10m
Southwest
Fri 7/245:50 pm
ISP
-
HOU
2 stops7h 20m
Southwest
Deal found 6/30$339
This JetBlue deal was found by Cheapflights users on 6/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:00 pm
IAH
-
ISP
1 stop7h 49m
JetBlue
Wed 9/26:00 am
ISP
-
IAH
1 stop6h 47m
JetBlue
Deal found 6/29$345
This Booking.com deal was found by Cheapflights users on 7/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/141:16 pm
IAH
-
ISP
1 stop19h 37m
Frontier
Mon 8/1710:57 am
ISP
-
IAH
1 stop28h 35m
Frontier
Deal found 7/2$348
This Southwest deal was found by Cheapflights users on 6/29. 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.
Sat 8/87:25 am
HOU
-
ISP
1 stop6h 05m
Southwest
Mon 8/106:10 am
ISP
-
HOU
1 stop7h 05m
Southwest
Deal found 6/29$352
This JetBlue deal was found by Cheapflights users on 6/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:00 pm
IAH
-
ISP
1 stop7h 49m
JetBlue
Tue 8/186:00 am
ISP
-
IAH
1 stop6h 47m
JetBlue
Deal found 6/29$353
This JetBlue deal was found by Cheapflights users on 6/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:00 pm
IAH
-
ISP
1 stop7h 49m
JetBlue
Thu 8/136:00 am
ISP
-
IAH
1 stop10h 47m
JetBlue
Deal found 6/29$362
This Southwest deal was found by Cheapflights users on 6/28. 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.
Thu 8/65:05 am
HOU
-
ISP
1 stop5h 50m
Southwest
Mon 8/106:10 am
ISP
-
HOU
1 stop7h 05m
Southwest
Deal found 6/28$362
This JetBlue deal was found by Cheapflights users on 6/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:00 pm
IAH
-
ISP
1 stop7h 49m
JetBlue
Tue 8/254:58 pm
ISP
-
IAH
1 stop7h 01m
JetBlue
Deal found 6/30$365
This Trip.com deal was found by Cheapflights users on 7/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:23 pm
IAH
-
ISP
1 stop13h 30m
Frontier
Mon 8/1010:57 am
ISP
-
IAH
1 stop8h 28m
Frontier
Deal found 7/1$366
This JetBlue deal was found by Cheapflights users on 6/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:00 pm
IAH
-
ISP
1 stop7h 49m
JetBlue
Wed 8/126:00 am
ISP
-
IAH
1 stop6h 47m
JetBlue
Deal found 6/29$367

Find flight deals from Houston to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) 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 July 3, 2026.

Round-trip from

$327
(Kiwi.com)

One-way from

$121
(Frontier)

Popular in

June

Cheapest in

January

Average price

$295
From Houston to Islip Long Island
Search Deals
One-way flight from Houston 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).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston 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 July 3, 2026.
Use the filters below to find and compare flights from Houston to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 8/6

7:23 pm-9:53 am

1 stop13h 30m

Islip Long Island

Mon 8/10

8:43 pm-8:45 am

2 stops37h 02m

$334

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Tue 9/1

1:00 pm-9:49 pm

1 stop7h 49m

Islip Long Island

Wed 9/2

6:00 am-11:47 am

1 stop6h 47m

$345

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Sat 8/8

7:25 am-2:30 pm

1 stop6h 05m

Islip Long Island

Mon 8/10

6:10 am-12:15 pm

1 stop7h 05m

$352

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 8/6

7:23 pm-9:53 am

1 stop13h 30m

Islip Long Island

Mon 8/10

10:57 am-6:25 pm

1 stop8h 28m

$366

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 8/14

12:16 pm-9:53 am

2 stops20h 37m

Islip Long Island

Mon 8/17

10:57 am-6:25 pm

1 stop8h 28m

$366

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Thu 8/6

5:05 am-11:55 am

1 stop5h 50m

Islip Long Island

Mon 8/10

6:10 am-2:00 pm

2 stops8h 50m

$367

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Wed 7/22

8:10 pm-8:20 am

1 stop11h 10m

Islip Long Island

Fri 7/24

6:00 am-10:40 am

1 stop5h 40m

$371
Quickest round-trip

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Fri 8/14

3:55 pm-10:05 pm

1 stop5h 10m

Islip Long Island

Mon 8/17

4:05 pm-8:25 pm

1 stop5h 20m

$389

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Fri 7/17

4:35 pm-11:45 pm

1 stop6h 10m

Islip Long Island

Tue 7/21

2:55 pm-8:25 pm

1 stop6h 30m

$432

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 7/15

1:00 pm-9:44 pm

1 stop7h 44m

Islip Long Island

Thu 7/23

6:00 am-11:47 am

1 stop6h 47m

$442

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 29 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Houston to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Houston 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 Houston to Islip
No data available for this route at this time. Please check back soon.

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 July 3, 2026.
See what other customers who have flown with Southwest from Houston to Islip have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

7.9

Comfort

8.0

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

7.9

Comfort

8.0

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

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

  • What airport do you fly into for flights to Islip from Houston?

    For a flight from Houston to Islip, you will be flying into Long Island. Islip Long Island (ISP) is just 7.2 mi from the center of the city. Long Island is the only Islip airport and it handles 0 inbound flights from Houston per day. 1 airline has flights to Islip Long Island from Houston on a regular basis.

  • How long is the flight from Houston to Islip, New York?

    For as low as $352, JetBlue can have you in Islip, New York from Houston in 6h 05m. The distance between Houston and Islip, New York is about 1462 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Houston to Islip, New York round-trip?

    Southwest, at $278, was found to be the cheapest airline from Houston to Islip, New York..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Houston 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.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Houston to Islip

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
Hobby to Newark flights
Hobby to LaGuardia flights
George Bush Intcntl to Newark flights
Austin to John F Kennedy Intl flights
Hobby to John F Kennedy Intl flights
Austin to Newark flights
George Bush Intcntl to John F Kennedy Intl flights
George Bush Intcntl to LaGuardia flights
Love Field to LaGuardia flights
Austin to LaGuardia flights
San Antonio to Newark flights
Dallas/Fort Worth to Buffalo flights
San Antonio to John F Kennedy Intl flights
Dallas/Fort Worth to Stewart flights
San Antonio to LaGuardia flights
Dallas/Fort Worth to Islip flights
Love Field to Newark flights
Dallas/Fort Worth to White Plains flights
Hobby to Buffalo flights
George Bush Intcntl to Buffalo flights
El Paso to John F Kennedy Intl flights
Love Field to Buffalo flights
El Paso to Newark flights
El Paso to LaGuardia flights
Love Field to John F Kennedy Intl flights
Dallas/Fort Worth to Albany flights
Austin to Buffalo flights
Dallas/Fort Worth to Rochester flights
Dallas/Fort Worth to Syracuse flights
McAllen to John F Kennedy Intl flights
Hobby to Albany flights
Hobby to Syracuse flights
Hobby to Rochester flights
McAllen to LaGuardia flights
George Bush Intcntl to Stewart flights
McAllen to Newark flights
Austin to Syracuse flights
George Bush Intcntl to White Plains flights
George Bush Intcntl to Albany flights
Brownsville to Newark flights
Austin to Albany flights
George Bush Intcntl to Syracuse flights
George Bush Intcntl to Rochester flights
Brownsville to LaGuardia flights

Top airline flying from Houston to Islip

Discover the top airline that operate flights from Houston 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 July 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$278Average$616FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.