What airlines fly to Houston?

United Airlines, Spirit Airlines and Delta are the top three most popular airlines that fly to Houston from Islip, New York according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Houston. Keep in mind that there are 7 different airlines that fly to Houston on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Islip Long Island to Houston?

Frontier is the most popular carrier operating from Islip Long Island to Houston

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?

The number of operators available for flights from Islip Long Island Airport to Houston is 1 as of December 2025.

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.

$65 Cheap Flights from Islip to Houston in 2025/26

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Find the cheapest flights from Islip, New York to Houston

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 6:58 pm

ISP

IAH

11h 58m1 stop

12:41 pm - 7:50 pm

IAH

ISP

6h 09m1 stop

$182Frontier

mié., ene. 14 - jue., ene. 15

3:34 pm - 6:28 pm

ISP

IAH

27h 54m1 stop

7:59 pm - 1:13 pm

IAH

ISP

16h 14m1 stop

$183Frontier

jue., feb. 26 - mar., mar. 3

8:33 am - 6:28 pm

ISP

IAH

10h 55m1 stop

9:44 pm - 7:38 am

IAH

ISP

8h 54m1 stop

$204Multiple Airlines

dom., mar. 1 - dom., mar. 1

8:33 am - 6:28 pm

ISP

IAH

10h 55m1 stop

7:45 am - 2:39 pm

IAH

ISP

5h 54m1 stop

$217Frontier

vie., feb. 27 - lun., mar. 2

9:43 pm - 9:00 am

ISP

IAH

12h 17m1 stop

8:18 pm - 6:48 pm

IAH

ISP

21h 30m1 stop

$241Frontier

vie., ene. 23 - dom., ene. 25

2:01 pm - 9:02 pm

ISP

IAH

8h 01m1 stop

6:00 am - 11:59 am

IAH

ISP

28h 59m2 stops

$251Multiple Airlines

lun., ene. 12 - lun., ene. 19

6:00 pm - 12:05 am

ISP

HOU

7h 05m1 stop

5:40 am - 11:45 am

HOU

ISP

5h 05m1 stop

$436Southwest

mar., dic. 30 - sáb., ene. 3

5:55 pm - 11:50 pm

ISP

HOU

6h 55m1 stop

3:55 pm - 11:55 pm

HOU

ISP

7h 00m2 stops

$441Southwest

sáb., ene. 3 - dom., ene. 4

5:55 pm - 11:50 pm

ISP

HOU

6h 55m1 stop

8:40 pm - 10:15 am

HOU

ISP

12h 35m1 stop

$452Southwest

sáb., ene. 3 - dom., ene. 4

5:50 pm - 12:20 am

ISP

HOU

7h 30m1 stop

3:55 pm - 11:55 pm

HOU

ISP

7h 00m2 stops

$460Southwest

vie., ene. 2 - dom., ene. 4

Southwest flights from Islip, New York to Houston

Our best Southwest deals on Islip, New York to Houston flight tickets

Southwest

Jan 6

ISP3:45 pmIslip Long Island

6h 00m

1 stop

HOU8:45 pmHouston Hobby

Jan 13

HOU6:05 amHouston Hobby

7h 30m

1 stop

ISP2:35 pmIslip Long Island

$369

Find similar

Southwest

Jan 6

ISP3:45 pmIslip Long Island

6h 00m

1 stop

HOU8:45 pmHouston Hobby

Jan 13

HOU6:30 amHouston Hobby

8h 45m

2 stops

ISP4:15 pmIslip Long Island

$374

Find similar

Southwest

Jan 6

ISP12:40 pmIslip Long Island

8h 00m

2 stops

HOU7:40 pmHouston Hobby

Jan 13

HOU7:25 amHouston Hobby

7h 50m

2 stops

ISP4:15 pmIslip Long Island

$379

Find similar

Frontier flights from Islip, New York to Houston

Our best Frontier deals on Islip, New York to Houston flight tickets

Frontier

Jan 14

ISP8:00 amIslip Long Island

11h 58m

1 stop

IAH6:58 pmHouston George Bush Intcntl

Jan 15

IAH12:41 pmHouston George Bush Intcntl

6h 09m

1 stop

ISP7:50 pmIslip Long Island

$182

Find similar

Frontier

Feb 26

ISP3:34 pmIslip Long Island

27h 54m

1 stop

IAH6:28 pmHouston George Bush Intcntl

Mar 3

IAH7:59 pmHouston George Bush Intcntl

16h 14m

1 stop

ISP1:13 pmIslip Long Island

$183

Find similar

Frontier

Feb 27

ISP8:33 amIslip Long Island

10h 55m

1 stop

IAH6:28 pmHouston George Bush Intcntl

Mar 2

IAH7:45 amHouston George Bush Intcntl

5h 54m

1 stop

ISP2:39 pmIslip Long Island

$217

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

mié. 1/14

8:00 am-6:58 pm

1 stop11h 58m

Houston George Bush Intcntl

jue. 1/15

12:41 pm-7:50 pm

1 stop6h 09m

$182

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

jue. 2/26

3:34 pm-6:28 pm

1 stop27h 54m

Houston George Bush Intcntl

mar. 3/3

7:59 pm-1:13 pm

1 stop16h 14m

$183

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

dom. 3/1

8:33 am-6:28 pm

1 stop10h 55m

Houston George Bush Intcntl

dom. 3/1

9:44 pm-7:38 am

1 stop8h 54m

$204

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

vie. 2/27

8:33 am-6:28 pm

1 stop10h 55m

Houston George Bush Intcntl

lun. 3/2

7:45 am-2:39 pm

1 stop5h 54m

$217

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

vie. 1/23

9:43 pm-9:00 am

1 stop12h 17m

Houston George Bush Intcntl

dom. 1/25

8:18 pm-6:48 pm

1 stop21h 30m

$241

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

lun. 1/12

2:01 pm-9:02 pm

1 stop8h 01m

Houston George Bush Intcntl

lun. 1/19

6:00 am-11:59 am

2 stops28h 59m

$251

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

mar. 12/30

6:00 pm-12:05 am

1 stop7h 05m

Houston Hobby

sáb. 1/3

5:40 am-11:45 am

1 stop5h 05m

$436

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

sáb. 1/3

5:55 pm-11:50 pm

1 stop6h 55m

Houston Hobby

dom. 1/4

3:55 pm-11:55 pm

2 stops7h 00m

$441

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

sáb. 1/3

5:55 pm-11:50 pm

1 stop6h 55m

Houston Hobby

dom. 1/4

8:40 pm-10:15 am

1 stop12h 35m

$452

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

vie. 1/2

5:50 pm-12:20 am

1 stop7h 30m

Houston Hobby

dom. 1/4

3:55 pm-11:55 pm

2 stops7h 00m

$460

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $325. 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 $436.

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 $316. Try not to purchase tickets in the morning because they tend to be around $380. 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	7h 17m
Direct flights	None

The fastest flight from Islip, New York to Houston takes 7h 17m

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 7h 17m 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?
The number of operators available for flights from Islip Long Island Airport to Houston is 1 as of December 2025.
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
Southwest	PriceFrom $343	Free Cancellation	Rating 7.9 4,250 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.