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George Bush Intcntl

$66+ Cheap flights from Islip, NY (ISP) to George Bush Intcntl (IAH)

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — IAH
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Islip to George Bush Intcntl

Cheapest flights from Islip to George Bush Intcntl
Explore the most affordable flight options available from Islip to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Frontier deal was found by Cheapflights users on 1/26. 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 2/288:23 pm
ISP
-
IAH
1 stop12h 32m
Frontier
Sun 3/18:18 pm
IAH
-
ISP
1 stop10h 20m
Frontier
Deal found 1/26$189
This Frontier deal was found by Cheapflights users on 1/25. 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 2/228:21 pm
ISP
-
IAH
1 stop11h 39m
Frontier
Thu 2/268:18 pm
IAH
-
ISP
1 stop10h 20m
Frontier
Deal found 1/25$199
This Frontier deal was found by Cheapflights users on 1/26. 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 2/263:34 pm
ISP
-
IAH
1 stop27h 54m
Frontier
Sun 3/18:18 pm
IAH
-
ISP
1 stop10h 20m
Frontier
Deal found 1/26$240
This Frontier deal was found by Cheapflights users on 1/26. 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.
Fri 2/278:33 am
ISP
-
IAH
1 stop10h 55m
Frontier
Sun 3/18:18 pm
IAH
-
ISP
1 stop10h 20m
Frontier
Deal found 1/26$270
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 2/182:03 pm
ISP
-
IAH
1 stop18h 52m
Multiple Airlines
Thu 2/192:17 pm
IAH
-
ISP
1 stop22h 14m
Multiple Airlines
Deal found 1/25$276
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
Mon 1/267:43 pm
ISP
-
IAH
1 stop16h 28m
Multiple Airlines
Fri 1/308:19 pm
IAH
-
ISP
2 stops45h 27m
Multiple Airlines
Deal found 1/24$402
This Frontier deal was found by Cheapflights users on 1/26. 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.
Fri 2/278:33 am
ISP
-
IAH
1 stop10h 55m
Frontier
Mon 3/27:45 am
IAH
-
ISP
1 stop5h 54m
Frontier
Deal found 1/26$425
This Frontier deal was found by Cheapflights users on 1/25. 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.
Mon 2/238:23 am
ISP
-
IAH
1 stop11h 05m
Frontier
Mon 3/27:45 am
IAH
-
ISP
1 stop5h 54m
Frontier
Deal found 1/25$451
This CheapOair deal was found by Cheapflights users on 1/25. 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.
Mon 3/23:34 pm
ISP
-
IAH
1 stop28h 30m
Frontier
Sat 3/79:15 pm
IAH
-
ISP
1 stop17h 08m
Frontier
Deal found 1/25$464
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 2/1711:59 am
ISP
-
IAH
2 stops47h 23m
Multiple Airlines
Sun 2/228:18 pm
IAH
-
ISP
1 stop10h 20m
Multiple Airlines
Deal found 1/25$508

Find flight deals from Islip to George Bush Intcntl

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to George Bush Intcntl (IAH). 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 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$199
(Frontier)

One-way from

$67
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$253
Provider with most accurate pricing for Islip Long Island-Houston George Bush Intcntl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Houston George Bush Intcntl flights.
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From Islip Long Island to Houston George Bush Intcntl
Search Deals
One-way flight from Islip Long Island to Houston George Bush Intcntl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($22 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 Islip to George Bush Intcntl 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 26, 2026.
Use the filters below to find and compare flights from Islip to Houston George Bush Intcntl Airport that are best for you.

Fly from

Islip

Fly to

George Bush Intcntl

Route

Depart

Return

Price

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 2/28

8:23 pm-7:55 am

1 stop12h 32m

Houston George Bush Intcntl

Sun 3/1

8:18 pm-7:38 am

1 stop10h 20m

$189

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sun 2/22

8:21 pm-7:00 am

1 stop11h 39m

Houston George Bush Intcntl

Thu 2/26

8:18 pm-7:38 am

1 stop10h 20m

$199

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Fri 2/27

8:33 am-6:28 pm

1 stop10h 55m

Houston George Bush Intcntl

Sun 3/1

8:18 pm-7:38 am

1 stop10h 20m

$270

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 2/18

2:03 pm-7:55 am

1 stop18h 52m

Houston George Bush Intcntl

Thu 2/19

2:17 pm-1:31 pm

1 stop22h 14m

$276

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Fri 2/27

8:33 am-6:28 pm

1 stop10h 55m

Houston George Bush Intcntl

Mon 3/2

7:45 am-2:39 pm

1 stop5h 54m

$425

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Mon 2/23

8:23 am-6:28 pm

1 stop11h 05m

Houston George Bush Intcntl

Mon 3/2

7:45 am-2:39 pm

1 stop5h 54m

$451

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Mon 3/2

3:34 pm-7:04 pm

1 stop28h 30m

Houston George Bush Intcntl

Sat 3/7

9:15 pm-3:23 pm

1 stop17h 08m

$464

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Tue 2/17

11:59 am-10:22 am

2 stops47h 23m

Houston George Bush Intcntl

Sun 2/22

8:18 pm-7:38 am

1 stop10h 20m

$508

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 2/14

8:23 pm-6:28 pm

1 stop23h 05m

Houston George Bush Intcntl

Mon 2/23

7:45 am-3:05 pm

1 stop6h 20m

$560

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 2/14

8:23 pm-7:55 am

1 stop12h 32m

Houston George Bush Intcntl

Sun 2/22

8:18 pm-7:38 am

1 stop10h 20m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 21 results
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Compare providers for flights from Islip to George Bush Intcntl

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 Islip to George Bush Intcntl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Islip, New York-Houston George Bush Intcntl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Houston George Bush Intcntl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Houston George Bush Intcntl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Houston George Bush Intcntl Airport 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 Islip, New York-Houston George Bush Intcntl Airport 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 Islip to George Bush Intcntl

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

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

Currently, October is the cheapest month in which you can book a flight from Islip, New York to Houston George Bush Intcntl Airport (average of $65). Flying from Islip, New York to Houston George Bush Intcntl Airport in December is currently the most expensive (average of $149). 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 Islip to George Bush Intcntl. 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 from for flights from Islip to Houston George Bush Intcntl?

    Islip Long Island (ISP), located 7.2 mi from the city center, is the airport you fly out of when you book flights from Islip to Houston George Bush Intcntl. 0 airlines have flights from Long Island to Houston George Bush Intcntl on a regular basis. Booking flights from Islip Long Island to Houston George Bush Intcntl should not be difficult; the airport handles an average of 0 outbound flights to Houston George Bush Intcntl per day.

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

    There are many flights that can get you from Islip, New York to Houston George Bush Intcntl Airport in 11h 39m. Fly via Frontier to get the fastest option. The distance between Islip, New York and Houston George Bush Intcntl Airport is about 1451 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to George Bush Intcntl 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 Islip, New York to Houston George Bush Intcntl Airport?

    Currently, October is the cheapest month in which you can book a flight from Islip, New York to Houston George Bush Intcntl Airport (average of $65). Flying from Islip, New York to Houston George Bush Intcntl Airport in December is currently the most expensive (average of $149). 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

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Montgomery
Spring
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Tomball
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Conroe
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Cypress

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