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Islip

$135+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ISP
Jun 21 — Jun 281
Sun 6/21
Sun 6/28
1 adult, Economy
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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 May 22, 2026.

This Frontier deal was found by Cheapflights users on 5/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:07 pm
IAH
-
ISP
1 stop6h 50m
Frontier
Wed 7/19:52 pm
ISP
-
IAH
1 stop11h 55m
Frontier
Deal found 5/20$270
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Tue 9/224:39 pm
IAH
-
ISP
1 stop15h 54m
Multiple Airlines
Tue 9/2912:00 pm
ISP
-
IAH
2 stops11h 06m
Multiple Airlines
Deal found 5/17$287
This Expedia deal was found by Cheapflights users on 5/19. 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.
Thu 6/117:24 pm
IAH
-
ISP
1 stop24h 33m
Frontier
Tue 6/164:41 pm
ISP
-
IAH
1 stop26h 48m
Frontier
Deal found 5/19$289
This Expedia deal was found by Cheapflights users on 5/19. 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.
Tue 7/77:24 pm
IAH
-
ISP
1 stop13h 34m
Frontier
Fri 7/1010:48 am
ISP
-
IAH
1 stop22h 57m
Frontier
Deal found 5/19$290
This Expedia deal was found by Cheapflights users on 5/17. 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.
Tue 8/187:04 pm
IAH
-
ISP
1 stop13h 59m
Frontier
Mon 8/2410:48 am
ISP
-
IAH
1 stop22h 59m
Frontier
Deal found 5/17$294
This Booking.com deal was found by Cheapflights users on 5/19. 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.
Tue 6/27:44 pm
IAH
-
ISP
1 stop13h 21m
Frontier
Tue 6/94:41 pm
ISP
-
IAH
1 stop17h 06m
Frontier
Deal found 5/19$302
This Booking.com deal was found by Cheapflights users on 5/17. 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.
Tue 9/224:39 pm
IAH
-
ISP
1 stop15h 54m
Frontier
Tue 9/294:13 pm
ISP
-
IAH
1 stop24h 31m
Frontier
Deal found 5/17$307
This Southwest deal was found by Cheapflights users on 5/17. 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.
Tue 8/186:05 am
HOU
-
ISP
1 stop5h 05m
Southwest
Mon 8/246:10 am
ISP
-
HOU
1 stop7h 15m
Southwest
Deal found 5/17$309
This Frontier deal was found by Cheapflights users on 5/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:07 pm
IAH
-
ISP
1 stop6h 50m
Frontier
Sat 7/410:48 am
ISP
-
IAH
1 stop8h 41m
Frontier
Deal found 5/19$310
This Expedia deal was found by Cheapflights users on 5/17. 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 6/171:07 pm
IAH
-
ISP
1 stop6h 50m
Frontier
Sat 6/209:52 pm
ISP
-
IAH
1 stop11h 55m
Frontier
Deal found 5/17$320
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Tue 8/189:42 am
IAH
-
ISP
1 stop24h 35m
Multiple Airlines
Mon 8/242:28 pm
ISP
-
IAH
2 stops33h 20m
Multiple Airlines
Deal found 5/17$324
This Southwest deal was found by Cheapflights users on 5/21. 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.
Tue 7/78:10 pm
HOU
-
ISP
1 stop10h 55m
Southwest
Fri 7/106:00 am
ISP
-
HOU
1 stop5h 40m
Southwest
Deal found 5/21$325

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 May 22, 2026.

Round-trip from

$270
(Frontier)

One-way from

$135
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$277
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. 1% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 22, 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
Quickest round-trip

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Tue 8/18

6:05 am-12:10 pm

1 stop5h 05m

Islip Long Island

Mon 8/24

6:10 am-12:25 pm

1 stop7h 15m

$309

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Sun 7/5

8:40 pm-10:30 am

1 stop12h 50m

Islip Long Island

Mon 7/20

5:50 pm-12:45 am

2 stops7h 55m

$352

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Fri 6/12

3:25 pm-11:35 pm

1 stop7h 10m

Islip Long Island

Mon 6/15

6:05 pm-11:45 pm

1 stop6h 40m

$389

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 6/17

8:55 pm-8:57 pm

2 stops23h 02m

Islip Long Island

Sat 6/20

9:52 pm-8:47 am

1 stop11h 55m

$414

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Thu 6/18

8:35 pm-8:20 am

1 stop10h 45m

Islip Long Island

Thu 6/25

5:50 pm-12:05 am

2 stops7h 15m

$419

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sun 6/21

1:07 pm-8:57 pm

1 stop6h 50m

Islip Long Island

Wed 6/24

9:52 pm-8:47 am

1 stop11h 55m

$420

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Thu 6/11

8:35 pm-8:20 am

1 stop10h 45m

Islip Long Island

Tue 6/16

6:00 am-1:45 pm

2 stops8h 45m

$424

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Tue 6/2

6:00 am-4:47 pm

2 stops9h 47m

Islip Long Island

Tue 6/9

7:18 pm-12:12 pm

1 stop17h 54m

$425

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Tue 9/22

1:00 pm-9:35 pm

1 stop7h 35m

Islip Long Island

Tue 9/29

6:00 am-11:47 am

1 stop6h 47m

$465

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Tue 8/25

1:00 pm-10:56 pm

1 stop8h 56m

Islip Long Island

Wed 8/26

6:00 am-11:47 am

1 stop6h 47m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Showing 1-10 of 31 resultsSorted by cheapest first
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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 May 22, 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
4,277 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Comfort

8.0

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
4,277 reviews
Southwest
7.9
Good
4,277 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

7.9

Food

7.0

Comfort

8.0

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 $309, Southwest can have you in Islip, New York from Houston in 5h 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
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Alternative routes for Houston to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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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 May 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$278Average$592FlexibilityNo cancel feeOn-time63%

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