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Islip

$82+ Cheap flights from George Bush Intcntl (IAH) 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ISP
May 18 — May 251
Mon 5/18
Mon 5/25
1 adult, Economy
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Find cheap flights from George Bush Intcntl to Islip with Cheapflights

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Cheap flight deals from George Bush Intcntl to Islip

Cheapest flights from George Bush Intcntl to Islip
Explore the most affordable flight options available from George Bush Intcntl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.

This Frontier deal was found by Cheapflights users on 4/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:57 pm
IAH
-
ISP
1 stop13h 16m
Frontier
Wed 5/611:00 am
ISP
-
IAH
1 stop8h 49m
Frontier
Deal found 4/17$200
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Fri 5/15:45 am
IAH
-
ISP
2 stops12h 51m
Multiple Airlines
Mon 5/44:07 pm
ISP
-
IAH
1 stop27h 42m
Multiple Airlines
Deal found 4/14$244
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Wed 5/206:00 am
IAH
-
ISP
1 stop27h 27m
Multiple Airlines
Wed 5/2711:00 am
ISP
-
IAH
1 stop21h 33m
Multiple Airlines
Deal found 4/16$248
This Expedia deal was found by Cheapflights users on 4/14. 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 5/281:29 pm
IAH
-
ISP
1 stop19h 36m
Frontier
Sun 5/3111:00 am
ISP
-
IAH
1 stop8h 33m
Frontier
Deal found 4/14$250
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/281:29 pm
IAH
-
ISP
1 stop19h 36m
Multiple Airlines
Sun 5/317:49 pm
ISP
-
IAH
2 stops28h 01m
Multiple Airlines
Deal found 4/14$289
This Trip.com deal was found by Cheapflights users on 4/13. 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.
Wed 5/137:44 pm
IAH
-
ISP
1 stop13h 43m
Frontier
Wed 5/2011:00 am
ISP
-
IAH
1 stop8h 49m
Frontier
Deal found 4/13$300
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Wed 5/137:44 pm
IAH
-
ISP
1 stop13h 43m
Multiple Airlines
Wed 5/2011:57 am
ISP
-
IAH
2 stops29h 19m
Multiple Airlines
Deal found 4/13$304
This CheapOair deal was found by Cheapflights users on 4/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:44 pm
IAH
-
ISP
1 stop13h 43m
Frontier
Tue 5/125:38 pm
ISP
-
IAH
1 stop16h 17m
Frontier
Deal found 4/15$306
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Fri 5/228:28 am
IAH
-
ISP
2 stops24h 37m
Multiple Airlines
Tue 5/265:27 pm
ISP
-
IAH
1 stop20h 07m
Multiple Airlines
Deal found 4/14$324
This Travelocity deal was found by Cheapflights users on 4/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:04 pm
IAH
-
ISP
1 stop13h 59m
Frontier
Sat 7/1810:48 am
ISP
-
IAH
1 stop8h 21m
Frontier
Deal found 4/14$355
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Fri 6/197:24 pm
IAH
-
ISP
1 stop13h 39m
Frontier
Mon 6/297:50 pm
ISP
-
IAH
2 stops27h 58m
Frontier
Deal found 4/15$376

Find flight deals from George Bush Intcntl to Islip

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) 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 April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Frontier)

One-way from

$82
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$285
Provider with most accurate pricing for Houston George Bush Intcntl-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Islip Long Island flights.
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From Houston George Bush Intcntl to Islip Long Island
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One-way flight from Houston George Bush Intcntl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($6 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 April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl 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 April 18, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport 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

Fri 5/1

5:45 am-7:36 pm

2 stops12h 51m

Islip Long Island

Mon 5/4

4:07 pm-6:49 pm

1 stop27h 42m

$244

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 5/28

1:29 pm-10:05 am

1 stop19h 36m

Islip Long Island

Sun 5/31

7:49 pm-10:50 pm

2 stops28h 01m

$289

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 5/13

7:44 pm-10:27 am

1 stop13h 43m

Islip Long Island

Wed 5/20

11:57 am-4:16 pm

2 stops29h 19m

$304
Quickest round-trip

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 5/9

7:44 pm-10:27 am

1 stop13h 43m

Islip Long Island

Tue 5/12

5:38 pm-8:55 am

1 stop16h 17m

$306

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 5/22

8:28 am-10:05 am

2 stops24h 37m

Islip Long Island

Tue 5/26

5:27 pm-12:34 pm

1 stop20h 07m

$324

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 6/19

7:24 pm-10:03 am

1 stop13h 39m

Islip Long Island

Mon 6/29

7:50 pm-10:48 pm

2 stops27h 58m

$376

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 5/13

5:45 am-10:27 am

2 stops27h 42m

Islip Long Island

Wed 5/20

11:00 am-10:50 pm

2 stops12h 50m

$394

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Mon 7/20

8:42 pm-10:03 am

2 stops36h 21m

Islip Long Island

Mon 7/27

10:48 am-8:47 am

1 stop22h 59m

$403

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 6/19

7:24 pm-10:03 am

1 stop13h 39m

Islip Long Island

Mon 6/29

2:28 pm-12:12 pm

1 stop22h 44m

$447

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 6/25

7:24 pm-10:03 am

1 stop13h 39m

Islip Long Island

Sun 6/28

7:49 pm-7:23 am

2 stops36h 34m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from George Bush Intcntl 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 George Bush Intcntl to Islip in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Houston George Bush Intcntl Airport-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 Houston George Bush Intcntl Airport-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-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 Houston George Bush Intcntl Airport-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 George Bush Intcntl to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from George Bush Intcntl 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.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl 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 George Bush Intcntl?

    Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Islip from Houston George Bush Intcntl. Booking flights from Houston George Bush Intcntl to Long Island (ISP) should be relatively easy as there are 0 daily inbound flights from Houston George Bush Intcntl from 0 different airlines.

  • How long is the flight from Houston George Bush Intcntl Airport to Islip, New York?

    Departing from Houston George Bush Intcntl Airport to Islip, New York will take you 13h 43m. Airlines will cover a distance of 1451 mi.

  • Can I find deals for flights from George Bush Intcntl to Islip that include hotel bookings?

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

  • How can I find direct flights from George Bush Intcntl to Islip?

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

  • Can I find deals for business class flights from George Bush Intcntl to Islip?

    Yes. Cheapflights offers flight deals from George Bush Intcntl 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.

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