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Galveston

$144+ Cheap flights from Islip, NY (ISP) to Galveston, TX

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — HOU
Apr 2 — Apr 91
Thu 4/2
Thu 4/9
1 adult, Economy
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Cheap flight deals from Islip to Galveston

Cheapest flights from Islip to Galveston
Explore the most affordable flight options available from Islip to Galveston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2026.

This Southwest deal was found by Cheapflights users on 3/1. 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.
Mon 4/134:30 pm
ISP
-
HOU
1 stop8h 35m
Southwest
Tue 4/1411:05 am
HOU
-
ISP
1 stop6h 25m
Southwest
Deal found 3/1$287
This Southwest deal was found by Cheapflights users on 3/1. 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 4/114:40 pm
ISP
-
HOU
1 stop6h 00m
Southwest
Mon 4/1310:20 am
HOU
-
ISP
2 stops9h 05m
Southwest
Deal found 3/1$292
This Southwest deal was found by Cheapflights users on 3/2. 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.
Fri 4/176:50 am
ISP
-
HOU
1 stop6h 00m
Southwest
Sun 4/195:05 am
HOU
-
ISP
1 stop5h 45m
Southwest
Deal found 3/2$321
This Southwest deal was found by Cheapflights users on 3/2. 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.
Fri 7/316:00 am
ISP
-
HOU
1 stop7h 15m
Southwest
Mon 8/35:05 am
HOU
-
ISP
2 stops8h 25m
Southwest
Deal found 3/2$398
This Southwest deal was found by Cheapflights users on 3/2. 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 3/175:25 pm
ISP
-
HOU
1 stop6h 25m
Southwest
Sat 3/215:00 am
HOU
-
ISP
1 stop7h 45m
Southwest
Deal found 3/2$455

Find flight deals from Islip to Galveston

Keep the following information in mind while searching for Islip to Galveston flight deals. Data was last updated March 3, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$287
(Southwest)

One-way from

$144
(Southwest)

Popular in

April

Cheapest in

February

Average price

$481
Provider with most accurate pricing for New York (NYC)-Houston flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-Houston flights.
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From Islip Long Island to Galveston
Search Deals
One-way flight from Islip Long Island to Galveston
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($140 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Galveston 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 March 3, 2026.
Use the filters below to find and compare flights from Islip to Galveston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 4/13

4:30 pm-12:05 am

1 stop8h 35m

Houston Hobby

Tue 4/14

11:05 am-6:30 pm

1 stop6h 25m

$287

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sat 4/11

9:20 am-5:40 pm

2 stops9h 20m

Houston Hobby

Mon 4/13

10:20 am-8:25 pm

2 stops9h 05m

$375

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 4/17

12:45 pm-9:00 pm

2 stops9h 15m

Houston Hobby

Sun 4/19

5:05 am-11:50 am

1 stop5h 45m

$393

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Tue 3/17

5:25 pm-10:50 pm

1 stop6h 25m

Houston Hobby

Sat 3/21

5:00 am-1:45 pm

1 stop7h 45m

$455

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 6/19

3:05 pm-9:35 pm

2 stops7h 30m

Houston Hobby

Mon 6/22

6:00 am-2:30 pm

2 stops7h 30m

$507

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sat 3/14

5:50 pm-11:10 pm

1 stop6h 20m

Houston Hobby

Wed 3/18

2:40 pm-10:50 pm

2 stops7h 10m

$537

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Thu 4/9

5:10 pm-11:30 pm

1 stop7h 20m

Houston Hobby

Sun 4/12

5:05 am-11:50 am

1 stop5h 45m

$597

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Thu 4/9

5:10 pm-11:30 pm

1 stop7h 20m

$144

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 3/23

5:55 pm-11:40 pm

1 stop6h 45m

$144

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sun 3/15

5:55 pm-11:15 pm

1 stop6h 20m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/28

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Islip to Galveston

Have a flexible travel schedule? Discover the best time to fly to Galveston 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 Galveston

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

Currently, October is the cheapest month in which you can book a flight from Islip, New York to Galveston (average of $65). Flying from Islip, New York to Galveston in December is currently the most expensive (average of $130). 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 Galveston

Get insights into the airlines that provide service to Galveston. 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 Galveston. Reviews last updated March 3, 2026.
See what other customers who have flown with Southwest from Islip to Galveston 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
4,302 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

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
8.0
Very good
4,302 reviews
Southwest
8.0
Very good
4,302 reviews

Entertainment

7.5

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

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 Galveston. 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 Galveston?

    For a flight from Islip to Galveston, 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 Galveston per day. 1 airline has flights to Galveston from Islip Long Island on a regular basis.

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

    A quick flight from Islip, New York to Galveston can take about 8h 35m. Southwest provides one of the quickest options available for as low as $287. Airlines will cover a distance of 1462 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to Galveston 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 Galveston?

    Currently, October is the cheapest month in which you can book a flight from Islip, New York to Galveston (average of $65). Flying from Islip, New York to Galveston in December is currently the most expensive (average of $130). 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

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Top airline flying from Islip to Galveston

Discover the top airline that operate flights from Islip to Galveston. 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 March 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$266Average$446FlexibilityNo cancel feeOn-time63%

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