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$111+ Cheap flights from Islip, NY (ISP) to Houston

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — HOU
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
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Cheap flight deals from Islip to Houston

Cheapest flights from Islip to Houston
Explore the most affordable flight options available from Islip to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 13, 2026.

This Expedia deal was found by Cheapflights users on 5/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/179:52 pm
ISP
-
IAH
1 stop11h 55m
Frontier
Mon 6/227:24 pm
IAH
-
ISP
1 stop19h 32m
Frontier
Deal found 5/12$230
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:13 pm
ISP
-
IAH
1 stop25h 01m
Frontier
Tue 10/274:39 pm
IAH
-
ISP
1 stop20h 54m
Frontier
Deal found 5/12$262
This CheapOair deal was found by Cheapflights users on 5/11. 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.
Thu 5/2811:00 am
ISP
-
IAH
1 stop8h 33m
Frontier
Tue 6/21:29 pm
IAH
-
ISP
1 stop19h 36m
Frontier
Deal found 5/11$280
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/33:43 pm
ISP
-
IAH
1 stop25h 01m
Frontier
Tue 11/104:39 pm
IAH
-
ISP
1 stop20h 54m
Frontier
Deal found 5/11$283
This CheapOair deal was found by Cheapflights users on 5/11. 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.
Fri 6/129:52 pm
ISP
-
IAH
1 stop11h 55m
Frontier
Mon 6/157:24 pm
IAH
-
ISP
1 stop19h 32m
Frontier
Deal found 5/11$290
This Frontier deal was found by Cheapflights users on 5/12. 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 6/179:52 pm
ISP
-
IAH
1 stop11h 55m
Frontier
Thu 6/251:07 pm
IAH
-
ISP
1 stop6h 50m
Frontier
Deal found 5/12$315
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:02 pm
ISP
-
IAH
1 stop15h 53m
Frontier
Wed 5/271:29 pm
IAH
-
ISP
1 stop19h 36m
Frontier
Deal found 5/10$323
This CheapOair deal was found by Cheapflights users on 5/12. 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.
Fri 6/199:52 pm
ISP
-
IAH
1 stop11h 55m
Frontier
Mon 6/227:24 pm
IAH
-
ISP
1 stop19h 32m
Frontier
Deal found 5/12$335
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 6/12:28 pm
ISP
-
IAH
1 stop23h 06m
Multiple Airlines
Mon 6/88:50 pm
IAH
-
ISP
2 stops20h 48m
Multiple Airlines
Deal found 5/12$339
This Trip.com deal was found by Cheapflights users on 5/11. 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.
Mon 6/299:52 pm
ISP
-
IAH
1 stop21h 37m
Frontier
Fri 7/37:24 pm
IAH
-
ISP
1 stop13h 39m
Frontier
Deal found 5/11$340
This Southwest deal was found by Cheapflights users on 5/11. 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.
Tue 11/312:25 pm
ISP
-
HOU
1 stop7h 25m
Southwest
Tue 11/106:30 am
HOU
-
ISP
2 stops8h 50m
Southwest
Deal found 5/11$359
This Southwest deal was found by Cheapflights users on 5/12. 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.
Tue 10/1310:10 am
ISP
-
HOU
2 stops10h 35m
Southwest
Tue 10/2711:05 am
HOU
-
ISP
1 stop7h 30m
Southwest
Deal found 5/12$363

Find flight deals from Islip to Houston

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Houston (HO1). 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 May 13, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$230
(Expedia)

One-way from

$111
(Frontier)

Popular in

March

Cheapest in

January

Average price

$317
Provider with most accurate pricing for New York (NYC)-Houston flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Houston flights.
Search Deals
From Islip Long Island to Houston
Search Deals
One-way flight from Islip Long Island to Houston
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Houston 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 May 13, 2026.
Use the filters below to find and compare flights from Islip to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 6/17

9:52 pm-8:47 am

1 stop11h 55m

Houston George Bush Intcntl

Mon 6/22

1:07 pm-8:57 pm

1 stop6h 50m

$250

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 6/17

9:52 pm-8:47 am

1 stop11h 55m

Houston George Bush Intcntl

Thu 6/25

1:07 pm-8:57 pm

1 stop6h 50m

$315

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Tue 7/14

5:27 pm-12:19 pm

1 stop19h 52m

Houston George Bush Intcntl

Tue 7/28

9:42 am-9:58 am

2 stops23h 16m

$349

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Tue 7/14

4:41 pm-6:25 pm

1 stop26h 44m

Houston George Bush Intcntl

Mon 7/27

7:24 pm-3:56 pm

1 stop19h 32m

$355

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Tue 11/3

12:25 pm-6:50 pm

1 stop7h 25m

Houston Hobby

Tue 11/10

5:35 am-4:20 pm

1 stop9h 45m

$359

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Tue 10/13

10:10 am-7:45 pm

2 stops10h 35m

Houston Hobby

Tue 10/27

11:05 am-7:35 pm

1 stop7h 30m

$363

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Thu 6/18

9:52 pm-8:47 am

1 stop11h 55m

Houston George Bush Intcntl

Sun 6/21

1:07 pm-8:57 pm

1 stop6h 50m

$405
Quickest round-trip

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Wed 6/24

2:55 pm-8:25 pm

1 stop6h 30m

Houston Hobby

Sat 6/27

5:25 am-11:35 am

1 stop5h 10m

$414

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sun 7/12

3:30 pm-9:50 pm

1 stop7h 20m

Houston Hobby

Wed 7/22

8:10 pm-8:20 am

1 stop11h 10m

$443

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Tue 8/25

6:00 am-3:47 pm

1 stop10h 47m

Houston George Bush Intcntl

Wed 8/26

1:00 pm-9:34 pm

1 stop7h 34m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/13

Showing 1-10 of 31 resultsSorted by cheapest first
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Best time to book a flight from Islip to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston 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
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. 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 Houston. Reviews last updated May 13, 2026.
Get a feel of what it's like to fly with Southwest from Islip to Houston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,296 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
7.9
Good
4,296 reviews
Southwest
7.9
Good
4,296 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Islip to Houston. 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?

    For a flight from Islip to Houston, you will be flying from 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 outbound flights to Houston per day. 1 airline has flights to Houston from Islip Long Island on a regular basis.

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

    There are many flights that can get you from Islip, New York to Houston in 7h 25m. Fly via Frontier or Southwest to get the fastest option. There are 1462 mi between Islip, New York and Houston. This flight may include one or multiple stops.

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

    Southwest, at $266, was found to be the cheapest airline from Islip, New York to Houston..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to Houston 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Islip to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Islip to Houston

Discover the top airline that operate flights from Islip to Houston. 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 May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$266Average$361FlexibilityNo cancel feeOn-time63%

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