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Islip

$71+ Cheap flights from Houston 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ISP
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Houston to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) 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 8, 2026.

Round-trip from

$170
(Kiwi.com)

One-way from

$71
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$201
From Houston to Islip Long Island
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One-way flight from Houston to Islip Long Island
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Highest demand for flights based on searches. 6% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Houston to Islip

Cheapest flights from Houston to Islip
Explore the most affordable flight options available from Houston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Trip.com deal was found by Cheapflights users on 1/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:40 pmIAH - ISP
1 stop8h 58mMultiple Airlines
Sat 2/2812:01 pmISP - IAH
1 stop11h 40mMultiple Airlines
Deal found 1/8$143
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 3/123:27 pmIAH - ISP
1 stop17h 21mFrontier
Mon 3/231:22 pmISP - IAH
1 stop20h 18mFrontier
Deal found 1/6$170
This Frontier deal was found by Cheapflights users on 1/6. 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.
Wed 1/148:16 pmIAH - ISP
1 stop11h 39mFrontier
Tue 1/2012:00 pmISP - IAH
1 stop10h 57mFrontier
Deal found 1/6$201
This CheapOair deal was found by Cheapflights users on 1/6. 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 1/178:16 pmIAH - ISP
1 stop11h 39mFrontier
Tue 1/2012:00 pmISP - IAH
1 stop10h 57mFrontier
Deal found 1/6$202
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 3/123:27 pmIAH - ISP
1 stop17h 21mFrontier
Sun 3/224:34 pmISP - IAH
1 stop15h 55mFrontier
Deal found 1/6$203
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 3/154:20 pmIAH - ISP
1 stop19h 13mMultiple Airlines
Mon 3/231:22 pmISP - IAH
1 stop20h 18mMultiple Airlines
Deal found 1/6$208
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 1/136:30 amIAH - ISP
2 stops15h 16mMultiple Airlines
Tue 1/2012:00 pmISP - IAH
1 stop27h 13mMultiple Airlines
Deal found 1/6$213
This Frontier deal was found by Cheapflights users on 1/6. 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.
Wed 1/148:16 pmIAH - ISP
1 stop11h 39mFrontier
Fri 1/239:43 pmISP - IAH
1 stop12h 17mFrontier
Deal found 1/6$216
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 2/1411:02 amIAH - ISP
1 stop7h 26mMultiple Airlines
Wed 2/1811:50 amISP - IAH
1 stop26h 16mMultiple Airlines
Deal found 1/6$219
This Trip.com deal was found by Cheapflights users on 1/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/138:16 pmIAH - ISP
1 stop25h 30mFrontier
Tue 1/2012:00 pmISP - IAH
1 stop10h 57mFrontier
Deal found 1/6$221
This Southwest deal was found by Cheapflights users on 1/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/147:55 amHOU - ISP
1 stop5h 25mSouthwest
Wed 2/183:45 pmISP - HOU
1 stop6h 00mSouthwest
Deal found 1/6$281
This Southwest deal was found by Cheapflights users on 1/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:25 amHOU - ISP
1 stop5h 10mSouthwest
Tue 6/232:55 pmISP - HOU
1 stop6h 30mSouthwest
Deal found 1/8$353

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston 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 8, 2026.
Use the filters below to find and compare flights from Houston to Islip that are best for you.

Fly from

Houston

Fly to

Islip

Route

Depart

Return

Price

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 2/26

9:40 pm-7:38 am

1 stop8h 58m

Islip Long Island

Sat 2/28

12:01 pm-10:41 pm

1 stop11h 40m

$143

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 3/12

3:27 pm-9:48 am

1 stop17h 21m

Islip Long Island

Mon 3/23

1:22 pm-8:40 am

1 stop20h 18m

$170

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 1/14

8:16 pm-8:55 am

1 stop11h 39m

Islip Long Island

Tue 1/20

12:00 pm-9:57 pm

1 stop10h 57m

$201

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 1/17

8:16 pm-8:55 am

1 stop11h 39m

Islip Long Island

Tue 1/20

12:00 pm-9:57 pm

1 stop10h 57m

$201

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 1/15

12:41 pm-7:50 pm

1 stop6h 09m

Islip Long Island

Tue 1/20

12:00 pm-9:57 pm

1 stop10h 57m

$201

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Tue 1/13

6:30 am-10:46 pm

2 stops15h 16m

Islip Long Island

Tue 1/20

12:00 pm-2:13 pm

1 stop27h 13m

$213

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 1/17

8:16 pm-8:55 am

1 stop11h 39m

Islip Long Island

Fri 1/23

9:43 pm-9:00 am

1 stop12h 17m

$216

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Wed 1/14

8:16 pm-8:55 am

1 stop11h 39m

Islip Long Island

Fri 1/23

9:43 pm-9:00 am

1 stop12h 17m

$216

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Thu 1/15

12:41 pm-7:50 pm

1 stop6h 09m

Islip Long Island

Fri 1/23

9:43 pm-9:00 am

1 stop12h 17m

$216

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 2/14

11:02 am-7:28 pm

1 stop7h 26m

Islip Long Island

Wed 2/18

11:50 am-1:06 pm

1 stop26h 16m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 25 results
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2
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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
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 to Islip

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

Currently, November is the cheapest month in which you can book a flight from Houston to Islip, New York (average of $65). Flying from Houston to Islip, New York in June is currently the most expensive (average of $116). 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 Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated January 8, 2026.
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
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Houston 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?

    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.

  • How long is the flight from Houston to Islip, New York?

    For as low as $281, Frontier can have you in Islip, New York from Houston in 5h 25m. The distance between Houston and Islip, New York is about 1462 mi. This flight may include one or multiple stops.

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

    Southwest, at $336, 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.

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

    Currently, November is the cheapest month in which you can book a flight from Houston to Islip, New York (average of $65). Flying from Houston to Islip, New York in June is currently the most expensive (average of $116). 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?

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Alternative routes for Houston to Islip

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Top airline flying from Houston to Islip

Discover the top airline that operate flights from Houston to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$336Average$576FlexibilityNo cancel feeOn-time63%

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