Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Islip, New York to Houston from $97

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 1/5. 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
6:00 am - 7:54 amISP-IAH
26h 54m1 stop
Frontier Logo
8:07 pm - 11:25 amIAH-ISP
14h 18m1 stop
$183Frontier
Find Deal
Wed, Dec 10 - Wed, Dec 17
Frontier Logo
8:35 pm - 7:21 amISP-IAH
11h 46m1 stop
Frontier Logo
9:34 pm - 4:37 pmIAH-ISP
18h 03m1 stop
$184Frontier
Find Deal
Sun, Dec 21 - Tue, Dec 30
Frontier Logo
8:35 pm - 7:21 amISP-IAH
11h 46m1 stop
Frontier Logo
9:34 pm - 11:25 amIAH-ISP
12h 51m1 stop
$185Frontier
Find Deal
Sun, Dec 21 - Wed, Dec 24
Frontier Logo
6:00 am - 6:29 pmISP-IAH
13h 29m1 stop
Frontier Logo
9:34 pm - 11:25 amIAH-ISP
12h 51m1 stop
$203Frontier
Find Deal
Wed, Dec 10 - Mon, Dec 22
Frontier Logo
8:24 pm - 10:01 amISP-IAH
14h 37m1 stop
Frontier Logo
8:13 pm - 7:45 pmIAH-ISP
22h 32m1 stop
$204Frontier
Find Deal
Mon, Jan 5 - Sat, Jan 10
Frontier Logo
6:00 am - 6:29 pmISP-IAH
13h 29m1 stop
Frontier Logo
8:01 am - 9:13 amIAH-ISP
24h 12m1 stop
$208Frontier
Find Deal
Wed, Dec 10 - Sun, Dec 14
Frontier Logo
8:00 am - 6:58 pmISP-IAH
11h 58m1 stop
Frontier Logo
8:18 pm - 8:40 amIAH-ISP
11h 22m1 stop
$222Frontier
Find Deal
Sat, Jan 17 - Sat, Jan 24
Frontier Logo
8:35 pm - 7:11 amISP-IAH
11h 36m1 stop
Frontier Logo
8:13 pm - 7:45 pmIAH-ISP
22h 32m1 stop
$227Frontier
Find Deal
Fri, Jan 2 - Wed, Jan 7
Southwest Logo
3:45 pm - 8:45 pmISP-HOU
6h 00m1 stop
Southwest Logo
3:45 pm - 9:55 pmHOU-ISP
5h 10m1 stop
$321Southwest
Find Deal
Thu, Jan 29 - Mon, Feb 2
Southwest Logo
3:45 pm - 8:45 pmISP-HOU
6h 00m1 stop
Southwest Logo
6:30 am - 4:15 pmHOU-ISP
8h 45m2 stops
$326Southwest
Find Deal
Thu, Jan 29 - Mon, Feb 2

Southwest flights from Islip, New York to Houston

Our best Southwest deals on Islip, New York to Houston flight tickets
Southwest
Jan 29
ISP3:45 pmIslip Long Island
6h 00m
1 stop
HOU8:45 pmHouston Hobby
Feb 2
HOU3:45 pmHouston Hobby
5h 10m
1 stop
ISP9:55 pmIslip Long Island
$321
Find similar
Southwest
Jan 29
ISP3:45 pmIslip Long Island
6h 00m
1 stop
HOU8:45 pmHouston Hobby
Feb 2
HOU6:30 amHouston Hobby
8h 45m
2 stops
ISP4:15 pmIslip Long Island
$326
Find similar
Southwest
Jan 29
ISP12:40 pmIslip Long Island
8h 00m
2 stops
HOU7:40 pmHouston Hobby
Feb 2
HOU12:30 pmHouston Hobby
8h 25m
2 stops
ISP9:55 pmIslip Long Island
$331
Find similar

Frontier flights from Islip, New York to Houston

Our best Frontier deals on Islip, New York to Houston flight tickets
Frontier
Dec 10
ISP6:00 amIslip Long Island
26h 54m
1 stop
IAH7:54 amHouston George Bush Intcntl
Dec 17
IAH8:07 pmHouston George Bush Intcntl
14h 18m
1 stop
ISP11:25 amIslip Long Island
$183
Find similar
Frontier
Dec 21
ISP8:35 pmIslip Long Island
11h 46m
1 stop
IAH7:21 amHouston George Bush Intcntl
Dec 30
IAH9:34 pmHouston George Bush Intcntl
18h 03m
1 stop
ISP4:37 pmIslip Long Island
$184
Find similar
Frontier
Dec 21
ISP8:35 pmIslip Long Island
11h 46m
1 stop
IAH7:21 amHouston George Bush Intcntl
Dec 24
IAH9:34 pmHouston George Bush Intcntl
12h 51m
1 stop
ISP11:25 amIslip Long Island
$185
Find similar

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 November 30, 2025.
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

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 12/10

6:00 am-7:54 am

1 stop26h 54m

Houston George Bush Intcntl

Wed 12/17

8:07 pm-11:25 am

1 stop14h 18m

$183

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sun 12/21

8:35 pm-7:21 am

1 stop11h 46m

Houston George Bush Intcntl

Tue 12/30

9:34 pm-4:37 pm

1 stop18h 03m

$184

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sun 12/21

8:35 pm-7:21 am

1 stop11h 46m

Houston George Bush Intcntl

Wed 12/24

9:34 pm-11:25 am

1 stop12h 51m

$185

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 12/10

6:00 am-6:29 pm

1 stop13h 29m

Houston George Bush Intcntl

Mon 12/22

9:34 pm-11:25 am

1 stop12h 51m

$203

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Mon 1/5

8:24 pm-10:01 am

1 stop14h 37m

Houston George Bush Intcntl

Sat 1/10

8:13 pm-7:45 pm

1 stop22h 32m

$204

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Wed 12/10

6:00 am-6:29 pm

1 stop13h 29m

Houston George Bush Intcntl

Sun 12/14

8:01 am-9:13 am

1 stop24h 12m

$208

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Sat 1/17

8:00 am-6:58 pm

1 stop11h 58m

Houston George Bush Intcntl

Sat 1/24

8:18 pm-8:40 am

1 stop11h 22m

$222

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

Fri 1/2

8:35 pm-7:11 am

1 stop11h 36m

Houston George Bush Intcntl

Wed 1/7

8:13 pm-7:45 pm

1 stop22h 32m

$227

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Thu 1/29

3:45 pm-8:45 pm

1 stop6h 00m

Houston Hobby

Mon 2/2

3:45 pm-9:55 pm

1 stop5h 10m

$321

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

Thu 1/29

3:45 pm-8:45 pm

1 stop6h 00m

Houston Hobby

Mon 2/2

6:30 am-4:15 pm

2 stops8h 45m

$326

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

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 typical price of a round-trip flight between Islip, New York and Houston?

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 Thursday. momondo users have found tickets for Thursday departures for as low as $327. 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 $439.

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 at noon. Our users have found flights to Houston at noon for as low as $314. Try not to purchase tickets in the morning because they tend to be around $381. 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

11h 36m

Direct flights

None
The fastest flight from Islip, New York to Houston takes 11h 36m
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

  • 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 6h 00m 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 $343Free CancellationRating
8.0
4,251 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.

An easier way to manage your Houston 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
Tue 12/30
Tue 1/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States