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George Bush Intcntl

$98+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — IAH
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap 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 July 29, 2025.

Round-trip from

$225
(FlightHub)

One-way from

$98
(Cheapflightsfares)

Popular in

December

Cheapest in

January

Average price

$303
From Islip Long Island to Houston George Bush Intcntl
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One-way flight from Islip Long Island to Houston George Bush Intcntl
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Highest demand for flights based on searches. 5% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1011:35 amISP - IAH
1 stop28h 29mFrontier
Wed 9/174:36 pmIAH - ISP
1 stop17h 19mFrontier
Deal found 7/28$225
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:21 pmISP - IAH
3 stops27h 04mMultiple Airlines
Wed 9/175:50 pmIAH - ISP
2 stops18h 49mMultiple Airlines
Deal found 7/28$628

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 July 29, 2025.
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

Wed 9/10

11:35 am-3:04 pm

1 stop28h 29m

Houston George Bush Intcntl

Wed 9/17

4:36 pm-10:55 am

1 stop17h 19m

$225

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 9/10

8:21 pm-10:25 pm

3 stops27h 04m

Houston George Bush Intcntl

Wed 9/17

5:50 pm-1:39 pm

2 stops18h 49m

$628

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 8/9

2:05 pm-7:44 pm

1 stop6h 39m

$98

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Mon 8/4

2:05 pm-10:54 pm

2 stops9h 49m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, August is the cheapest month in which you can book a flight from Islip, New York to Houston George Bush Intcntl Airport (average of $241). Flying from Islip, New York to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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.

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. 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 George Bush Intcntl. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Frontier from Islip to Houston George Bush Intcntl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Frontier
5.9
Fair
3,238 reviews

Comfort

5.6

Crew

6.7

Boarding

6.1

Entertainment

4.5

Food

4.7

Overall

5.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.
Frontier
5.9
Fair
3,238 reviews
Frontier
5.9
Fair
3,238 reviews

Comfort

5.6

Crew

6.7

Boarding

6.1

Entertainment

4.5

Food

4.7

Overall

5.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

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.

  • 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, August is the cheapest month in which you can book a flight from Islip, New York to Houston George Bush Intcntl Airport (average of $241). Flying from Islip, New York to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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
Humble
Conroe
The Woodlands
Tomball
Katy
Jersey Village

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