$131 Cheap Flights from Islip (ISP) to Houston (HOU)

View $131 flight on Mon, Oct 27, 2025Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Houston William Hobby Airport (HOU)

Cheap Flights from Islip to Houston (ISP-HOU)

Prices were available within the past 7 days and start at $131 for one-way flights and $263 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Mon, Nov 10 - Thu, Nov 13
ISP
Islip
HOU
Houston
$263 Roundtrip, found 13 hours ago
$263
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Mon, Nov 10 from Islip to Houston, returning Thu, Nov 13, priced at $263 found 13 hours ago
Southwest Airlines
Mon, Nov 10 - Thu, Nov 13
ISP
Islip
HOU
Houston
$268 Roundtrip, found 13 hours ago
$268
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Mon, Nov 10 from Islip to Houston, returning Thu, Nov 13, priced at $268 found 13 hours ago
Southwest Airlines
Sat, Nov 1 - Tue, Nov 4
ISP
Islip
HOU
Houston
$278 Roundtrip, found 5 days ago
$278
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Nov 1 from Islip to Houston, returning Tue, Nov 4, priced at $278 found 5 days ago
Southwest Airlines
Sat, Nov 1 - Tue, Nov 4
ISP
Islip
HOU
Houston
$302 Roundtrip, found 5 days ago
$302
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Nov 1 from Islip to Houston, returning Tue, Nov 4, priced at $302 found 5 days ago
Southwest Airlines
Thu, Nov 27 - Tue, Dec 2
ISP
Islip
HOU
Houston
$304 Roundtrip, found 6 hours ago
$304
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Thu, Nov 27 from Islip to Houston, returning Tue, Dec 2, priced at $304 found 6 hours ago
Southwest Airlines
Wed, Nov 5 - Sun, Nov 9
ISP
Islip
HOU
Houston
$309 Roundtrip, found 2 days ago
$309
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Nov 5 from Islip to Houston, returning Sun, Nov 9, priced at $309 found 2 days ago
Southwest Airlines
Fri, Nov 7 - Sat, Nov 8
ISP
Islip
HOU
Houston
$314 Roundtrip, found 1 day ago
$314
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Fri, Nov 7 from Islip to Houston, returning Sat, Nov 8, priced at $314 found 1 day ago
Southwest Airlines
Thu, Nov 6 - Mon, Nov 10
ISP
Islip
HOU
Houston
$321 Roundtrip, found 13 hours ago
$321
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Thu, Nov 6 from Islip to Houston, returning Mon, Nov 10, priced at $321 found 13 hours ago
Southwest Airlines
Sat, Nov 1 - Tue, Nov 4
ISP
Islip
HOU
Houston
$324 Roundtrip, found 5 days ago
$324
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Nov 1 from Islip to Houston, returning Tue, Nov 4, priced at $324 found 5 days ago
Southwest Airlines
Fri, Nov 7 - Sat, Nov 8
ISP
Islip
HOU
Houston
$326 Roundtrip, found 1 day ago
$326
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Fri, Nov 7 from Islip to Houston, returning Sat, Nov 8, priced at $326 found 1 day ago

Alternative airports near Houston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to George Bush Intercontinental IAH. Cheapest option available. Average driving time to city center is 24 minutes. Flights from $315
IAH
George Bush Intercontinental
Cheapest
Average driving time to city center24 min
Flights from $315

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to William P. Hobby Airport (HOU) cost?
Snag a cheap one-way flight from $131 or cheap return flight from $263 from MacArthur Airport (ISP) to William P. Hobby Airport (HOU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from MacArthur Airport (ISP) to William P. Hobby Airport (HOU)?
Traveling in November is a good way to save, as it's the cheapest month for flights between ISP and HOU. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from MacArthur Airport (ISP) to William P. Hobby Airport (HOU)?
To find the cheapest airline that'll fly you from ISP to HOU, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from MacArthur Airport (ISP) to William P. Hobby Airport (HOU)?
There are no daily nonstop flights from MacArthur Airport (ISP) to William P. Hobby Airport (HOU). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from ISP to HOU?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to William P. Hobby Airport (HOU)?
Choose a flight from MacArthur Airport (ISP) to William P. Hobby Airport (HOU) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to William P. Hobby Airport (HOU) last-minute?
Last-minute fares from ISP to HOU are typically more expensive. To lock in the lowest rates, start searching for flights early. That being said, if you can play around with your travel dates, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book an ISP to HOU flight and hotel package?
Compared with arranging hotels and flights separately, booking an ISP to HOU flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the hassle out of travel planning. Just pick your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to William P. Hobby Airport (HOU)?
If you booked your ISP to HOU flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
MacArthur
Destination airport
William P. Hobby
Airlines serving
Southwest Airlines
Roundtrip price
$262
Distance
1462 mi

Book with confidence

Book with confidence

Islip to Houston Flights

The cheapest times to fly from Islip to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to Houston are during the month of November. You can find some of the cheapest flights from Islip to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Houston

Sunday is one of the best days to book for cheap flights from Islip to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Islip to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $131 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Islip to Houston Flights

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*Available to One Key members.