Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Islip, New York to Houston from $95

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 4/9. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
5:45 am - 3:14 pm
ISP
-
IAH
10h 29m
1 stop
Frontier Logo
6:57 pm - 9:13 am
IAH
-
ISP
13h 16m
1 stop
$190Frontier
Sat, Apr 11 - Sat, Apr 18
Frontier Logo
8:36 pm - 7:02 am
ISP
-
IAH
11h 26m
1 stop
Frontier Logo
6:59 pm - 9:13 am
IAH
-
ISP
13h 14m
1 stop
$211Frontier
Sun, Apr 12 - Thu, Apr 16
Frontier Logo
7:34 pm - 8:38 am
ISP
-
IAH
14h 04m
1 stop
Frontier Logo
5:49 pm - 2:55 pm
IAH
-
ISP
20h 06m
2 stops
$217Frontier
Mon, Apr 13 - Thu, Apr 16
Frontier Logo
8:36 pm - 7:02 am
ISP
-
IAH
11h 26m
1 stop
Frontier Logo
6:57 pm - 9:13 am
IAH
-
ISP
13h 16m
1 stop
$232Frontier
Sun, Apr 12 - Wed, Apr 15
Multiple Airlines Logo
11:50 am - 12:57 pm
ISP
-
IAH
26h 07m
1 stop
Multiple Airlines Logo
9:15 pm - 10:28 pm
IAH
-
ISP
24h 13m
1 stop
$237Multiple Airlines
Wed, Mar 25 - Tue, Mar 31
Multiple Airlines Logo
11:50 am - 12:57 pm
ISP
-
IAH
26h 07m
1 stop
Multiple Airlines Logo
5:15 am - 1:21 am
IAH
-
ISP
19h 06m
2 stops
$241Multiple Airlines
Wed, Mar 25 - Tue, Mar 31
Multiple Airlines Logo
5:51 pm - 7:00 am
ISP
-
IAH
14h 09m
1 stop
Multiple Airlines Logo
6:07 pm - 11:10 am
IAH
-
ISP
40h 03m
2 stops
$254Multiple Airlines
Sun, Mar 1 - Thu, Mar 5
Frontier Logo
8:23 am - 6:28 pm
ISP
-
IAH
11h 05m
1 stop
Frontier Logo
9:03 pm - 9:48 am
IAH
-
ISP
11h 45m
1 stop
$271Frontier
Mon, Mar 2 - Fri, Mar 6
Multiple Airlines Logo
11:50 am - 1:03 pm
ISP
-
IAH
26h 13m
1 stop
Multiple Airlines Logo
5:49 pm - 11:10 am
IAH
-
ISP
40h 21m
2 stops
$272Multiple Airlines
Wed, Apr 15 - Mon, Apr 20
Frontier Logo
8:33 am - 6:28 pm
ISP
-
IAH
10h 55m
1 stop
Frontier Logo
8:18 pm - 7:38 am
IAH
-
ISP
10h 20m
1 stop
$276Frontier
Fri, Feb 27 - Sun, Mar 1

Frontier flights from Islip, New York to Houston George Bush Intcntl Airport

Our best Frontier deals on Islip, New York to Houston George Bush Intcntl Airport flight tickets
Frontier
Apr 11
ISP5:45 amIslip Long Island
10h 29m
1 stop
IAH3:14 pmHouston George Bush Intcntl
Apr 18
IAH6:57 pmHouston George Bush Intcntl
13h 16m
1 stop
ISP9:13 amIslip Long Island
$190
Frontier
Apr 12
ISP8:36 pmIslip Long Island
11h 26m
1 stop
IAH7:02 amHouston George Bush Intcntl
Apr 16
IAH6:59 pmHouston George Bush Intcntl
13h 14m
1 stop
ISP9:13 amIslip Long Island
$211
Frontier
Apr 13
ISP7:34 pmIslip Long Island
14h 04m
1 stop
IAH8:38 amHouston George Bush Intcntl
Apr 16
IAH5:49 pmHouston George Bush Intcntl
20h 06m
2 stops
ISP2:55 pmIslip Long Island
$217

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Houston George Bush Intcntl 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 February 16, 2026.
Use the filters below to find and compare flights from Islip, New York to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 4/11

5:45 am-3:14 pm

1 stop10h 29m

Houston George Bush Intcntl

Sat 4/18

6:57 pm-9:13 am

1 stop13h 16m

$190

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sun 4/12

8:36 pm-7:02 am

1 stop11h 26m

Houston George Bush Intcntl

Thu 4/16

6:59 pm-9:13 am

1 stop13h 14m

$211

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Mon 4/13

7:34 pm-8:38 am

1 stop14h 04m

Houston George Bush Intcntl

Thu 4/16

5:49 pm-2:55 pm

2 stops20h 06m

$217

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sun 4/12

8:36 pm-7:02 am

1 stop11h 26m

Houston George Bush Intcntl

Wed 4/15

6:57 pm-9:13 am

1 stop13h 16m

$232

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 3/25

11:50 am-12:57 pm

1 stop26h 07m

Houston George Bush Intcntl

Tue 3/31

9:15 pm-10:28 pm

1 stop24h 13m

$237

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 3/25

11:50 am-12:57 pm

1 stop26h 07m

Houston George Bush Intcntl

Tue 3/31

5:15 am-1:21 am

2 stops19h 06m

$241

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sun 3/1

5:51 pm-7:00 am

1 stop14h 09m

Houston George Bush Intcntl

Thu 3/5

6:07 pm-11:10 am

2 stops40h 03m

$254

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Mon 3/2

8:23 am-6:28 pm

1 stop11h 05m

Houston George Bush Intcntl

Fri 3/6

9:03 pm-9:48 am

1 stop11h 45m

$271

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 4/15

11:50 am-1:03 pm

1 stop26h 13m

Houston George Bush Intcntl

Mon 4/20

5:49 pm-11:10 am

2 stops40h 21m

$272

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Fri 2/27

8:33 am-6:28 pm

1 stop10h 55m

Houston George Bush Intcntl

Sun 3/1

8:18 pm-7:38 am

1 stop10h 20m

$276

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Houston from

How to get the cheapest flight ticket from Islip, New York to Houston George Bush Intcntl 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 George Bush Intcntl Airport?

The cheapest day to depart from Islip, New York to Houston George Bush Intcntl Airport is on a Friday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Friday will often find tickets for as low as $346. 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 George Bush Intcntl Airport on Sunday is $458.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest Islip, New York to Houston George Bush Intcntl Airport flights are usually those with departure times at noon. Our users have found flights to Houston George Bush Intcntl Airport at noon for as low as $339. Try not to purchase tickets in the evening because they tend to be around $391. 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 George Bush Intcntl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Houston George Bush Intcntl 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 George Bush Intcntl Airport (ISP to IAH) flight deals and tips

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

Fastest flight time

9h 59m

Direct flights

None
The fastest flight from Islip, New York to Houston George Bush Intcntl Airport takes 9h 59m
There are no direct flights from Islip, New York to Houston George Bush Intcntl Airport. There are no popular flight routes from Islip, New York to Houston George Bush Intcntl Airport.
Search flight deals

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

    There are 1444.1 mi between Islip Long Island and Houston George Bush Intcntl. Typically, this will take 9h 59m by plane in normal conditions.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The required travel and health documents for your Houston George Bush Intcntl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Houston George Bush Intcntl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
Katy
The Woodlands
Conroe
Cypress
Humble
Spring
Montgomery
Tomball
Livingston
Jersey Village

Why use momondo?

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

Finding the right flight to Houston from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Houston quick and easy, saving you time and money.

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

Yes. All flights to Houston from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Houston from Islip.

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

Yes momondo offers price alerts on flights to Houston from Islip. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Houston George Bush Intcntl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 3/18
Wed 3/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Houston