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Islip

$96+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ISP
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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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 January 21, 2026.

This Frontier deal was found by Cheapflights users on 1/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/148:18 pm
IAH
-
ISP
1 stop10h 30m
Frontier
Sat 2/218:23 pm
ISP
-
IAH
1 stop12h 32m
Frontier
Deal found 1/21$180
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/318:19 pm
IAH
-
ISP
1 stop11h 21m
Multiple Airlines
Wed 2/411:50 am
ISP
-
IAH
2 stops28h 29m
Multiple Airlines
Deal found 1/19$260
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:11 pm
IAH
-
ISP
1 stop13h 36m
Frontier
Sun 3/85:08 pm
ISP
-
IAH
1 stop15h 21m
Frontier
Deal found 1/19$267
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:05 pm
IAH
-
ISP
2 stops22h 42m
Multiple Airlines
Sun 3/85:08 pm
ISP
-
IAH
1 stop15h 21m
Multiple Airlines
Deal found 1/19$269
This CheapOair deal was found by Cheapflights users on 1/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/69:03 pm
IAH
-
ISP
1 stop11h 45m
Frontier
Mon 3/910:58 am
ISP
-
IAH
1 stop10h 10m
Frontier
Deal found 1/20$299
This CheapOair deal was found by Cheapflights users on 1/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2311:08 am
IAH
-
ISP
1 stop6h 30m
Frontier
Sun 1/257:53 pm
ISP
-
IAH
1 stop15h 20m
Frontier
Deal found 1/19$371
This CheapOair deal was found by Cheapflights users on 1/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:01 pm
IAH
-
ISP
1 stop18h 12m
Frontier
Mon 4/274:07 pm
ISP
-
IAH
1 stop17h 31m
Frontier
Deal found 1/20$448
This Frontier deal was found by Cheapflights users on 1/19. 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.
Thu 2/196:18 pm
IAH
-
ISP
1 stop12h 20m
Frontier
Sun 2/228:21 pm
ISP
-
IAH
1 stop11h 39m
Frontier
Deal found 1/19$455
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/228:18 pm
IAH
-
ISP
2 stops16h 03m
Multiple Airlines
Fri 1/239:43 pm
ISP
-
IAH
1 stop14h 28m
Multiple Airlines
Deal found 1/20$487
This CheapOair deal was found by Cheapflights users on 1/18. 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.
Tue 2/108:18 pm
IAH
-
ISP
1 stop15h 55m
Frontier
Sun 2/158:01 pm
ISP
-
IAH
1 stop11h 59m
Frontier
Deal found 1/18$524
This Frontier deal was found by Cheapflights users on 1/19. 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.
Sun 2/228:18 pm
IAH
-
ISP
1 stop10h 20m
Frontier
Sat 2/288:23 pm
ISP
-
IAH
1 stop12h 32m
Frontier
Deal found 1/19$543

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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$180
(Frontier)

One-way from

$96
(Frontier)

Popular in

December

Cheapest in

September

Average price

$205
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. 6% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 21, 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

George Bush Intcntl

Fly to

Islip

Route

Depart

Return

Price

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 2/14

8:18 pm-7:48 am

1 stop10h 30m

Islip Long Island

Sat 2/21

8:23 pm-7:55 am

1 stop12h 32m

$180

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 1/31

8:19 pm-8:40 am

1 stop11h 21m

Islip Long Island

Wed 2/4

11:50 am-3:19 pm

2 stops28h 29m

$260

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 3/5

10:11 pm-12:47 pm

1 stop13h 36m

Islip Long Island

Sun 3/8

5:08 pm-7:29 am

1 stop15h 21m

$267

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 3/5

1:05 pm-12:47 pm

2 stops22h 42m

Islip Long Island

Sun 3/8

5:08 pm-7:29 am

1 stop15h 21m

$269

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 3/6

9:03 pm-9:48 am

1 stop11h 45m

Islip Long Island

Mon 3/9

10:58 am-8:08 pm

1 stop10h 10m

$299

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 4/25

2:01 pm-9:13 am

1 stop18h 12m

Islip Long Island

Mon 4/27

4:07 pm-8:38 am

1 stop17h 31m

$448

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 2/19

6:18 pm-7:38 am

1 stop12h 20m

Islip Long Island

Sun 2/22

8:21 pm-7:00 am

1 stop11h 39m

$455

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Tue 2/10

8:18 pm-1:13 pm

1 stop15h 55m

Islip Long Island

Sun 2/15

8:01 pm-7:00 am

1 stop11h 59m

$524

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sun 2/22

8:18 pm-7:38 am

1 stop10h 20m

Islip Long Island

Sat 2/28

8:23 pm-7:55 am

1 stop12h 32m

$543

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 2/11

7:59 pm-2:39 pm

1 stop17h 40m

Islip Long Island

Fri 2/13

8:33 am-6:28 pm

1 stop10h 55m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 21 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Expedia the most. Expedia 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.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to Islip

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Islip, New York?

Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Islip, New York (average of $65). Flying from Houston George Bush Intcntl Airport to Islip, New York in December is currently the most expensive (average of $139). 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.

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 10h 30m. 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.

  • What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Islip, New York?

    Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Islip, New York (average of $65). Flying from Houston George Bush Intcntl Airport to Islip, New York in December is currently the most expensive (average of $139). 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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