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Galveston

$168+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — HOU
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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Cheap 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 26, 2025.

Round-trip from

$330
(Southwest)

One-way from

$168
(Southwest)

Popular in

December

Cheapest in

January

Average price

$277
From Islip Long Island to Galveston
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One-way flight from Islip Long Island to Galveston
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 26, 2025.

This Southwest deal was found by Cheapflights users on 3/25. 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.
Thu 5/11:00 pmISP - HOU
1 stop7h 50mSouthwest
Mon 5/59:15 amHOU - ISP
1 stop6h 10mSouthwest
Deal found 3/25$330

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 26, 2025.
Use the filters below to find and compare flights from Islip to Galveston that are best for you.

Fly from

Islip

Fly to

Galveston

Route

Depart

Return

Price

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Thu 5/1

1:00 pm-7:50 pm

1 stop7h 50m

Houston Hobby

Mon 5/5

9:15 am-4:25 pm

1 stop6h 10m

$330

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Wed 4/16

1:00 pm-6:55 pm

1 stop6h 55m

$168

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 5/26

10:44 am-11:33 am

2 stops25h 49m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

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, September is the cheapest month in which you can book a flight from Islip, New York to Galveston (average of $230). Flying from Islip, New York to Galveston in March is currently the most expensive (average of $334). 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.

What is the cheapest time of day to fly from ISP to G4L?

Find hourly flight availability from Islip to Galveston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2025.

When flying from Islip, New York to Galveston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Galveston by month

Plan your trip to Galveston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Galveston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Galveston when rainfall is around 3.2 in.

Temperature in Galveston by month

Plan your trip to Galveston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Galveston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

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 26, 2025.
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

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
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

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 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.

  • 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, September is the cheapest month in which you can book a flight from Islip, New York to Galveston (average of $230). Flying from Islip, New York to Galveston in March is currently the most expensive (average of $334). 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$376Average$476FlexibilityNo cancel feeOn-time63%
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