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Cheap flights from Islip, New York to Houston from $144

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Houston departing on 12/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:15 am - 2:35 pmISP-HOU
9h 20m1 stop
Southwest Logo
4:20 pm - 11:50 pmHOU-ISP
6h 30m1 stop
$321Southwest
Find Deal
Mon, Dec 8 - Fri, Dec 12
Southwest Logo
10:55 am - 9:35 pmISP-HOU
11h 40m2 stops
Southwest Logo
5:20 am - 12:50 pmHOU-ISP
6h 30m1 stop
$332Southwest
Find Deal
Fri, Dec 12 - Sun, Dec 14
Southwest Logo
12:55 pm - 6:15 pmISP-HOU
6h 20m1 stop
Southwest Logo
5:20 am - 12:50 pmHOU-ISP
6h 30m1 stop
$345Southwest
Find Deal
Fri, Dec 5 - Sun, Dec 7
Southwest Logo
6:15 am - 12:45 pmISP-HOU
7h 30m1 stop
Southwest Logo
10:00 am - 4:55 pmHOU-ISP
5h 55m2 stops
$346Southwest
Find Deal
Mon, Dec 8 - Fri, Dec 12
Southwest Logo
12:55 pm - 7:45 pmISP-HOU
7h 50m2 stops
Southwest Logo
5:20 am - 12:50 pmHOU-ISP
6h 30m1 stop
$350Southwest
Find Deal
Fri, Dec 5 - Sun, Dec 7
Southwest Logo
6:00 pm - 12:05 amISP-HOU
7h 05m1 stop
Southwest Logo
6:00 am - 3:20 pmHOU-ISP
8h 20m2 stops
$357Southwest
Find Deal
Mon, Dec 1 - Mon, Dec 8
Southwest Logo
10:55 am - 9:35 pmISP-HOU
11h 40m2 stops
Southwest Logo
3:15 pm - 11:50 pmHOU-ISP
7h 35m2 stops
$361Southwest
Find Deal
Fri, Dec 12 - Sun, Dec 14
Southwest Logo
12:55 pm - 7:45 pmISP-HOU
7h 50m2 stops
Southwest Logo
10:00 am - 4:55 pmHOU-ISP
5h 55m2 stops
$375Southwest
Find Deal
Fri, Dec 5 - Sun, Dec 7
Southwest Logo
6:00 pm - 12:05 amISP-HOU
7h 05m1 stop
Southwest Logo
6:00 am - 12:15 pmHOU-ISP
5h 15m1 stop
$393Southwest
Find Deal
Mon, Dec 1 - Mon, Dec 8
Southwest Logo
5:50 pm - 1:00 amISP-HOU
8h 10m2 stops
Southwest Logo
6:00 am - 3:20 pmHOU-ISP
8h 20m2 stops
$412Southwest
Find Deal
Mon, Dec 1 - Mon, Dec 8

Southwest flights from Islip, New York to Houston Hobby Airport

Our best Southwest deals on Islip, New York to Houston Hobby Airport flight tickets
Southwest
Dec 8
ISP6:15 amIslip Long Island
9h 20m
1 stop
HOU2:35 pmHouston Hobby
Dec 12
HOU4:20 pmHouston Hobby
6h 30m
1 stop
ISP11:50 pmIslip Long Island
$321
Find similar
Southwest
Dec 12
ISP10:55 amIslip Long Island
11h 40m
2 stops
HOU9:35 pmHouston Hobby
Dec 14
HOU5:20 amHouston Hobby
6h 30m
1 stop
ISP12:50 pmIslip Long Island
$332
Find similar
Southwest
Dec 5
ISP12:55 pmIslip Long Island
6h 20m
1 stop
HOU6:15 pmHouston Hobby
Dec 7
HOU5:20 amHouston Hobby
6h 30m
1 stop
ISP12:50 pmIslip Long Island
$345
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Houston Hobby Airport 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, momondo users made 832,500 searches. Data last updated November 5, 2025.
Use the filters below to find and compare flights from Islip, New York to Houston Hobby Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 12/8

6:15 am-2:35 pm

1 stop9h 20m

Houston Hobby

Fri 12/12

4:20 pm-11:50 pm

1 stop6h 30m

$321

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 12/12

10:55 am-9:35 pm

2 stops11h 40m

Houston Hobby

Sun 12/14

5:20 am-12:50 pm

1 stop6h 30m

$332

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 12/5

12:55 pm-6:15 pm

1 stop6h 20m

Houston Hobby

Sun 12/7

5:20 am-12:50 pm

1 stop6h 30m

$345

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 12/8

6:15 am-12:45 pm

1 stop7h 30m

Houston Hobby

Fri 12/12

10:00 am-4:55 pm

2 stops5h 55m

$346

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 12/5

12:55 pm-7:45 pm

2 stops7h 50m

Houston Hobby

Sun 12/7

5:20 am-12:50 pm

1 stop6h 30m

$350

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 12/1

6:00 pm-12:05 am

1 stop7h 05m

Houston Hobby

Mon 12/8

6:00 am-3:20 pm

2 stops8h 20m

$357

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 12/12

10:55 am-9:35 pm

2 stops11h 40m

Houston Hobby

Sun 12/14

3:15 pm-11:50 pm

2 stops7h 35m

$361

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Fri 12/5

12:55 pm-7:45 pm

2 stops7h 50m

Houston Hobby

Sun 12/7

10:00 am-4:55 pm

2 stops5h 55m

$375

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 12/1

6:00 pm-12:05 am

1 stop7h 05m

Houston Hobby

Mon 12/8

6:00 am-12:15 pm

1 stop5h 15m

$393

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Mon 12/1

5:50 pm-1:00 am

2 stops8h 10m

Houston Hobby

Mon 12/8

6:00 am-3:20 pm

2 stops8h 20m

$412

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Islip, New York to Houston Hobby Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Houston Hobby Airport?

Our data shows that Thursday is the least expensive day to fly to Houston Hobby Airport. Tickets to fly out on this day can be as low as $325. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston Hobby Airport on Sunday is $463.

What is the cheapest time of day to depart on your flight to Houston Hobby Airport?

According to our data, the cheapest time of day to fly to Houston Hobby Airport is at noon. momondo users have found flights departing from Islip, New York to Houston Hobby Airport at noon for as low as $317. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $382. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Islip, New York to Houston Hobby Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Houston Hobby Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Houston Hobby Airport (ISP to HOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Houston Hobby Airport

Direct flights

None
There are no direct flights from Islip, New York to Houston Hobby Airport. There are no popular flight routes from Islip, New York to Houston Hobby Airport.
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  • How far is Islip Long Island to Houston Hobby by plane?

    The distance between Islip Long Island and Houston Hobby is about 1455.1 mi. A reasonable flight in good conditions will take 6h 20m.

  • When did momondo last update prices for flights from Islip Long Island Airport to Houston Hobby Airport?

    Prices for flights from Islip Long Island Airport to Houston Hobby Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Islip Long Island Airport to Houston Hobby Airport?

  • How old do you have to be to fly from Islip Long Island Airport to Houston Hobby Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Houston Hobby Airport.

  • What documentation or ID do you need to fly to Houston Hobby Airport?

    The necessary travel and health documents for your Houston Hobby Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Islip, New York to Houston Hobby Airport?

Best airlines flying from Islip, New York to Houston Hobby Airport

Compare and see reviews for airlines that fly from Islip, New York to Houston Hobby Airport with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $343Free CancellationRating
8.0
4,240 reviews
Search Southwest flights

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
Galveston
Kemah
Sugar Land
Pasadena
Baytown
Texas City
Webster
Pearland
Rosenberg
Freeport
Lake Jackson
Stafford
League City
Missouri City
Seabrook
La Marque
West University Place
Nassau Bay

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Houston?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Houston. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Islip to Houston with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Houston from Islip with this policy.

How can momondo help me find flights from Islip to Houston?

momondo provides multiple filters to help you find the best flight to Houston from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Islip to Houston right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to Houston now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Houston and let you know when they change.

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