HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$125+ Cheap flights from George Bush Intcntl (IAH) to Islip (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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ISP
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from George Bush Intcntl to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find 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 October 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/14. 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 10/248:37 pmIAH - ISP
1 stop13h 00mFrontier
Mon 10/274:58 pmISP - IAH
1 stop17h 35mFrontier
Deal found 10/14$309
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Sun 10/266:05 amIAH - ISP
2 stops11h 51mMultiple Airlines
Sun 10/269:47 pmISP - IAH
1 stop11h 46mMultiple Airlines
Deal found 10/13$312
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:08 pmIAH - ISP
1 stop13h 03mFrontier
Fri 12/59:09 pmISP - IAH
1 stop12h 45mFrontier
Deal found 10/13$316
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 10/248:37 pmIAH - ISP
1 stop13h 00mMultiple Airlines
Mon 10/278:47 pmISP - IAH
2 stops37h 46mMultiple Airlines
Deal found 10/14$344
This Frontier deal was found by Cheapflights users on 10/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:37 pmIAH - ISP
1 stop13h 00mFrontier
Sun 10/269:47 pmISP - IAH
1 stop10h 17mFrontier
Deal found 10/14$365
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Fri 10/247:30 pmIAH - ISP
1 stop14h 07mMultiple Airlines
Sun 10/269:47 pmISP - IAH
2 stops15h 10mMultiple Airlines
Deal found 10/13$464
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:37 pmIAH - ISP
1 stop13h 00mFrontier
Sun 10/199:47 pmISP - IAH
1 stop10h 17mFrontier
Deal found 10/13$509
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Fri 10/178:10 pmIAH - ISP
2 stops40h 29mMultiple Airlines
Sun 10/199:47 pmISP - IAH
1 stop10h 17mMultiple Airlines
Deal found 10/13$595
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Sat 10/256:00 amIAH - ISP
2 stops28h 04mMultiple Airlines
Sun 10/269:47 pmISP - IAH
1 stop11h 46mMultiple Airlines
Deal found 10/13$639
This Mytrip deal was found by Cheapflights users on 10/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:10 amIAH - ISP
2 stops26h 26mMultiple Airlines
Sat 11/299:59 amISP - IAH
2 stops22h 25mMultiple Airlines
Deal found 10/14$828

Cheap 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$312
(Kiwi.com)

One-way from

$125
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$243
Provider with most accurate pricing for Houston George Bush Intcntl-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Houston George Bush Intcntl-Islip Long Island flights.
Search Deals
From Houston George Bush Intcntl to Islip Long Island
Search Deals
One-way flight from Houston George Bush Intcntl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 14, 2025.
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

Fri 10/24

8:37 pm-10:37 am

1 stop13h 00m

Islip Long Island

Mon 10/27

4:58 pm-9:33 am

1 stop17h 35m

$309

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sun 10/26

6:05 am-6:56 pm

2 stops11h 51m

Islip Long Island

Sun 10/26

9:47 pm-8:33 am

1 stop11h 46m

$312

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sun 11/2

10:28 am-8:42 pm

1 stop9h 14m

Islip Long Island

Mon 11/3

9:54 am-3:36 pm

1 stop6h 42m

$316

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 12/4

7:08 pm-9:11 am

1 stop13h 03m

Islip Long Island

Fri 12/5

9:09 pm-8:54 am

1 stop12h 45m

$316

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 10/24

8:37 pm-10:37 am

1 stop13h 00m

Islip Long Island

Sun 10/26

9:47 pm-7:04 am

1 stop10h 17m

$316

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 12/4

7:08 pm-9:11 am

1 stop13h 03m

Islip Long Island

Sun 12/7

9:09 pm-8:54 am

1 stop12h 45m

$316

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 10/24

7:30 pm-10:37 am

1 stop14h 07m

Islip Long Island

Sun 10/26

9:47 pm-11:57 am

2 stops15h 10m

$464

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 10/25

6:00 am-11:04 am

2 stops28h 04m

Islip Long Island

Sun 10/26

9:47 pm-8:33 am

1 stop11h 46m

$639

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 11/26

6:10 am-9:36 am

2 stops26h 26m

Islip Long Island

Sat 11/29

9:59 am-7:24 am

2 stops22h 25m

$828

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 11/1

8:48 pm-12:00 pm

3 stops14h 12m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 20 results
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-Islip 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 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 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?

Currently, March is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Islip (average of $75). Flying from Houston George Bush Intcntl Airport to Islip in December is currently the most expensive (average of $132). 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?

    Departing from Houston George Bush Intcntl Airport to Islip will take you 13h. The distance from Houston George Bush Intcntl Airport to Islip is about 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?

    Currently, March is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Islip (average of $75). Flying from Houston George Bush Intcntl Airport to Islip in December is currently the most expensive (average of $132). 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 Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for George Bush Intcntl to Islip

See prices for flight routes from nearby airports that may be better suited for you.
Hobby to Newark flights
Hobby to John F Kennedy Intl flights
Hobby to LaGuardia flights
George Bush Intcntl to John F Kennedy Intl flights
George Bush Intcntl to Newark flights
George Bush Intcntl to LaGuardia flights
Hobby to Buffalo flights
Hobby to Albany flights
Hobby to Syracuse flights
George Bush Intcntl to Buffalo flights
Hobby to Stewart flights
George Bush Intcntl to Syracuse flights
George Bush Intcntl to Albany flights
Hobby to White Plains flights
George Bush Intcntl to White Plains flights
Hobby to Rochester flights
George Bush Intcntl to Rochester flights
Hobby to Elmira flights
Hobby to Ithaca flights
George Bush Intcntl to Ithaca flights
George Bush Intcntl to Elmira flights
George Bush Intcntl to Binghamton flights
Hobby to Islip flights
Hobby to Niagara Falls flights
Hobby to Watertown flights
George Bush Intcntl to Watertown flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.