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Cheap flights from Islip, New York to Houston from $105

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 5/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from Islip, New York to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:00 am - 8:50 am
ISP
-
IAH
22h 50m
1 stop
Frontier Logo
9:55 am - 10:05 am
IAH
-
ISP
23h 10m
1 stop
$180Frontier
Sat, May 9 - Tue, May 12
Frontier Logo
11:00 am - 8:50 am
ISP
-
IAH
22h 50m
1 stop
Frontier Logo
7:44 pm - 10:27 am
IAH
-
ISP
13h 43m
1 stop
$205Frontier
Sat, May 9 - Wed, May 13
Frontier Logo
11:00 am - 8:50 am
ISP
-
IAH
22h 50m
1 stop
Frontier Logo
9:45 am - 10:27 am
IAH
-
ISP
23h 42m
1 stop
$210Frontier
Wed, May 13 - Sat, May 16
Frontier Logo
11:12 am - 6:33 pm
ISP
-
IAH
8h 21m
1 stop
Frontier Logo
7:28 pm - 10:05 am
IAH
-
ISP
13h 37m
1 stop
$226Frontier
Thu, May 7 - Sun, May 10
Frontier Logo
11:00 am - 8:50 am
ISP
-
IAH
22h 50m
1 stop
Frontier Logo
6:25 am - 5:58 pm
IAH
-
ISP
10h 33m
2 stops
$230Frontier
Wed, May 13 - Sat, May 16
Multiple Airlines Logo
11:00 am - 7:33 am
ISP
-
IAH
21h 33m
1 stop
Multiple Airlines Logo
9:45 am - 6:14 pm
IAH
-
ISP
31h 29m
2 stops
$285Multiple Airlines
Sat, May 9 - Thu, May 14
Southwest Logo
12:15 pm - 7:40 pm
ISP
-
HOU
8h 25m
1 stop
Southwest Logo
6:00 am - 11:55 am
HOU
-
ISP
4h 55m
1 stop
$346Southwest
Sat, May 9 - Wed, May 13
Southwest Logo
5:30 am - 1:20 pm
ISP
-
HOU
8h 50m
2 stops
Southwest Logo
8:05 am - 4:35 pm
HOU
-
ISP
7h 30m
1 stop
$351Southwest
Sat, May 9 - Wed, May 13
Southwest Logo
5:50 pm - 10:15 pm
ISP
-
HOU
5h 25m
1 stop
Southwest Logo
2:50 pm - 10:35 pm
HOU
-
ISP
6h 45m
1 stop
$353Southwest
Thu, Jun 4 - Wed, Jun 10
Southwest Logo
12:15 pm - 7:40 pm
ISP
-
HOU
8h 25m
1 stop
Southwest Logo
3:10 pm - 10:30 pm
HOU
-
ISP
6h 20m
1 stop
$370Southwest
Sat, May 9 - Thu, May 14

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Southwest flights from Islip, New York to Houston

Our best Southwest deals on Islip, New York to Houston flight tickets
Southwest
May 9
ISP12:15 pmIslip Long Island
8h 25m
1 stop
HOU7:40 pmHouston Hobby
May 13
HOU6:00 amHouston Hobby
4h 55m
1 stop
ISP11:55 amIslip Long Island
$346
Southwest
May 9
ISP5:30 amIslip Long Island
8h 50m
2 stops
HOU1:20 pmHouston Hobby
May 13
HOU8:05 amHouston Hobby
7h 30m
1 stop
ISP4:35 pmIslip Long Island
$351
Southwest
Jun 4
ISP5:50 pmIslip Long Island
5h 25m
1 stop
HOU10:15 pmHouston Hobby
Jun 10
HOU2:50 pmHouston Hobby
6h 45m
1 stop
ISP10:35 pmIslip Long Island
$353

Frontier flights from Islip, New York to Houston

Our best Frontier deals on Islip, New York to Houston flight tickets
Frontier
May 9
ISP11:00 amIslip Long Island
22h 50m
1 stop
IAH8:50 amHouston George Bush Intcntl
May 12
IAH9:55 amHouston George Bush Intcntl
23h 10m
1 stop
ISP10:05 amIslip Long Island
$180
Frontier
May 9
ISP11:00 amIslip Long Island
22h 50m
1 stop
IAH8:50 amHouston George Bush Intcntl
May 13
IAH7:44 pmHouston George Bush Intcntl
13h 43m
1 stop
ISP10:27 amIslip Long Island
$205
Frontier
May 13
ISP11:00 amIslip Long Island
22h 50m
1 stop
IAH8:50 amHouston George Bush Intcntl
May 16
IAH9:45 amHouston George Bush Intcntl
23h 42m
1 stop
ISP10:27 amIslip Long Island
$210

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York 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, momondo users made 832,500 searches. Data last updated April 22, 2026.
Use the filters below to find and compare flights from Islip, New York 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

Sat 5/9

11:00 am-8:50 am

1 stop22h 50m

Houston George Bush Intcntl

Tue 5/12

9:55 am-10:05 am

1 stop23h 10m

$180

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 5/9

11:00 am-8:50 am

1 stop22h 50m

Houston George Bush Intcntl

Wed 5/13

7:44 pm-10:27 am

1 stop13h 43m

$205

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 5/13

11:00 am-8:50 am

1 stop22h 50m

Houston George Bush Intcntl

Sat 5/16

9:45 am-10:27 am

1 stop23h 42m

$210

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Thu 5/7

11:12 am-6:33 pm

1 stop8h 21m

Houston George Bush Intcntl

Sun 5/10

7:28 pm-10:05 am

1 stop13h 37m

$226

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 5/13

11:00 am-8:50 am

1 stop22h 50m

Houston George Bush Intcntl

Sat 5/16

6:25 am-5:58 pm

2 stops10h 33m

$230

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 5/9

11:00 am-7:33 am

1 stop21h 33m

Houston George Bush Intcntl

Thu 5/14

9:45 am-6:14 pm

2 stops31h 29m

$285

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sat 5/9

12:15 pm-7:40 pm

1 stop8h 25m

Houston Hobby

Wed 5/13

6:00 am-11:55 am

1 stop4h 55m

$346

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sat 5/9

5:30 am-1:20 pm

2 stops8h 50m

Houston Hobby

Wed 5/13

8:05 am-4:35 pm

1 stop7h 30m

$351
Quickest round-trip

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Thu 6/4

5:50 pm-10:15 pm

1 stop5h 25m

Houston Hobby

Wed 6/10

2:50 pm-10:35 pm

1 stop6h 45m

$353

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Sat 5/9

12:15 pm-7:40 pm

1 stop8h 25m

Houston Hobby

Thu 5/14

3:10 pm-10:30 pm

1 stop6h 20m

$370

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Islip, New York to Houston

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?

On average, the least expensive day to fly to Houston from Islip, New York is on a Friday. momondo users have found tickets for Friday departures for as low as $322. However, this price may fluctuate depending on the airline, the season, and holidays. 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 on Sunday is $452.

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

Our data shows that the cheapest Islip, New York to Houston flights are usually those with departure times in the morning. Our users have found flights to Houston in the morning for as low as $372. Try not to purchase tickets in the afternoon because they tend to be around $407. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Islip, New York to Houston flight deals and tips

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

Fastest flight time

8h 48m

Direct flights

None
The fastest flight from Islip, New York to Houston takes 8h 48m
There are no direct flights from Islip, New York to Houston. There are no popular flight routes from Islip, New York to Houston.
Search flight deals

Frequently asked questions about flying from Islip, New York to Houston

  • How far is Islip Long Island to Houston by plane?

    The straight-line distance from Islip Long Island to Houston is 1454.8 mi. Typically, this will take 8h 48m by plane in normal conditions.

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

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

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

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

    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.

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

    The necessary travel and health documents for your Houston 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.

Best airlines flying from Islip, New York to Houston

Compare and see reviews for airlines that fly from Islip, New York to Houston with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $266Free CancellationRating
8.0
4,330 reviews
Search Southwest flights

Why use momondo?

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

It is quick and easy to find Islip to Houston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Houston that suits you.

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

Yes. momondo allows you to filter the results for Islip to Houston flights to just show those with flexible booking policies.

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

Once you have performed a search for Islip to Houston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Houston from Islip are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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