HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

Cheap flights from Houston to Islip, NY (ISP)

HOU — ISP
Nov 4 — Nov 111
Wed 11/4
Wed 11/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Houston 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 Houston to Islip

Popular in

December

Cheapest in

January

Average price

$332
High demand for flights, 6% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Best time to book a flight from Houston to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Houston with our price prediction graph.
Estimated round-trip price

Reviews of airlines servicing Islip

See what other customers who have flown with Southwest from Houston to Islip have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,213 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,213 reviews
Southwest
8.0
Very good
4,213 reviews

Entertainment

7.5

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

  • What airport do you fly into for flights to Islip from Houston?

    For a flight from Houston to Islip, you will be flying into Long Island. Islip Long Island (ISP) is just 7.2 mi from the center of the city. Long Island is the only Islip airport and it handles 0 inbound flights from Houston per day. 1 airline has flights to Islip Long Island from Houston on a regular basis.

  • What is the cheapest airline to fly from Houston to Islip, New York round-trip?

    Southwest, at $280, was found to be the cheapest airline from Houston to Islip, New York..

  • Can I find deals for flights from Houston to Islip that include hotel bookings?

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

  • How can I find direct flights from Houston to Islip?

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

  • Can I find deals for business class flights from Houston to Islip?

    Yes. Cheapflights offers flight deals from Houston 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.

See more FAQs

Traveling to a place near Islip?

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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Houston to Islip

Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
Hobby to LaGuardia flights
Hobby to Newark flights
Hobby to John F Kennedy Intl flights
George Bush Intcntl to LaGuardia flights
Austin to John F Kennedy Intl flights
George Bush Intcntl to Newark flights
George Bush Intcntl to John F Kennedy Intl flights
Austin to Newark flights
Love Field to LaGuardia flights
Austin to LaGuardia flights
Dallas/Fort Worth to Stewart flights
San Antonio to Newark flights
San Antonio to John F Kennedy Intl flights
San Antonio to LaGuardia flights
Love Field to Newark flights
Dallas/Fort Worth to Buffalo flights
George Bush Intcntl to Stewart flights
Dallas/Fort Worth to Islip flights
Love Field to John F Kennedy Intl flights
Dallas/Fort Worth to White Plains flights
El Paso to John F Kennedy Intl flights
El Paso to Newark flights
Hobby to Buffalo flights
El Paso to LaGuardia flights
Dallas/Fort Worth to Albany flights
George Bush Intcntl to Buffalo flights
Austin to White Plains flights
McAllen to John F Kennedy Intl flights
Dallas/Fort Worth to Syracuse flights
McAllen to Newark flights
McAllen to LaGuardia flights
Dallas/Fort Worth to Rochester flights
Hobby to Syracuse flights
Austin to Albany flights
Austin to Syracuse flights
Hobby to Albany flights
San Antonio to Stewart flights
Austin to Rochester flights
George Bush Intcntl to Syracuse flights
George Bush Intcntl to White Plains flights
Love Field to Buffalo flights
Laredo to John F Kennedy Intl flights
Hobby to Rochester flights

Top airline flying from Houston to Islip

AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$280Average$491FlexibilityNo cancel feeOn-time63%

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.