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 and Southwest are the most popular carriers 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 November 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.

$69 Cheap Flights from Islip to Houston in 2025/26

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Find the cheapest flights from Islip, New York to Houston

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Cheap round-trip flights

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10:19 am - 6:29 pmISP-IAH

9h 10m1 stop

8:07 pm - 10:44 pmIAH-ISP

25h 37m1 stop

$138Frontier

Find Deal

sáb., dic. 6 - mar., dic. 9

8:29 pm - 6:29 pmISP-IAH

23h 00m1 stop

8:13 pm - 7:45 pmIAH-ISP

22h 32m1 stop

$142Frontier

Find Deal

mar., dic. 9 - sáb., ene. 10

10:19 am - 6:29 pmISP-IAH

9h 10m1 stop

8:07 pm - 7:34 pmIAH-ISP

22h 27m1 stop

$146Frontier

Find Deal

jue., dic. 4 - lun., dic. 8

11:50 am - 4:19 pmISP-IAH

29h 29m2 stops

8:16 pm - 8:55 amIAH-ISP

11h 39m1 stop

$166Multiple Airlines

Find Deal

mié., ene. 7 - mié., ene. 14

11:50 am - 12:26 pmISP-IAH

25h 36m1 stop

8:16 pm - 8:55 amIAH-ISP

11h 39m1 stop

$169Multiple Airlines

Find Deal

mié., ene. 7 - mié., ene. 14

8:29 pm - 6:29 pmISP-IAH

23h 00m1 stop

8:07 pm - 7:34 pmIAH-ISP

22h 27m1 stop

$170Frontier

Find Deal

mar., dic. 9 - jue., dic. 11

12:40 pm - 8:45 pmISP-HOU

9h 05m1 stop

6:00 am - 11:55 amHOU-ISP

4h 55m1 stop

$267Southwest

Find Deal

mié., ene. 7 - mié., ene. 14

6:00 am - 12:50 pmISP-HOU

7h 50m2 stops

6:00 am - 11:55 amHOU-ISP

4h 55m1 stop

$272Southwest

Find Deal

mié., ene. 7 - mié., ene. 14

6:00 am - 12:50 pmISP-HOU

7h 50m2 stops

12:30 pm - 9:55 pmHOU-ISP

8h 25m2 stops

$277Southwest

Find Deal

mié., ene. 7 - mié., ene. 14

12:30 pm - 7:10 pmISP-HOU

7h 40m1 stop

6:00 am - 1:50 pmHOU-ISP

6h 50m1 stop

$345Southwest

Find Deal

mar., abr. 21 - mar., abr. 28

Southwest flights from Islip, New York to Houston

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

Southwest

Jan 7

ISP12:40 pmIslip Long Island

9h 05m

1 stop

HOU8:45 pmHouston Hobby

Jan 14

HOU6:00 amHouston Hobby

4h 55m

1 stop

ISP11:55 amIslip Long Island

$267

Find similar

Southwest

Jan 7

ISP6:00 amIslip Long Island

7h 50m

2 stops

HOU12:50 pmHouston Hobby

Jan 14

HOU6:00 amHouston Hobby

4h 55m

1 stop

ISP11:55 amIslip Long Island

$272

Find similar

Southwest

Jan 7

ISP6:00 amIslip Long Island

7h 50m

2 stops

HOU12:50 pmHouston Hobby

Jan 14

HOU12:30 pmHouston Hobby

8h 25m

2 stops

ISP9:55 pmIslip Long Island

$277

Find similar

Frontier flights from Islip, New York to Houston

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

Frontier

Dec 6

ISP10:19 amIslip Long Island

9h 10m

1 stop

IAH6:29 pmHouston George Bush Intcntl

Dec 9

IAH8:07 pmHouston George Bush Intcntl

25h 37m

1 stop

ISP10:44 pmIslip Long Island

$138

Find similar

Frontier

Dec 9

ISP8:29 pmIslip Long Island

23h 00m

1 stop

IAH6:29 pmHouston George Bush Intcntl

Jan 10

IAH8:13 pmHouston George Bush Intcntl

22h 32m

1 stop

ISP7:45 pmIslip Long Island

$142

Find similar

Frontier

Dec 4

ISP10:19 amIslip Long Island

9h 10m

1 stop

IAH6:29 pmHouston George Bush Intcntl

Dec 8

IAH8:07 pmHouston George Bush Intcntl

22h 27m

1 stop

ISP7:34 pmIslip Long Island

$146

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

sáb. 12/6

10:19 am-6:29 pm

1 stop9h 10m

Houston George Bush Intcntl

mar. 12/9

8:07 pm-10:44 pm

1 stop25h 37m

$138

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

mar. 12/9

8:29 pm-6:29 pm

1 stop23h 00m

Houston George Bush Intcntl

sáb. 1/10

8:13 pm-7:45 pm

1 stop22h 32m

$142

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

jue. 12/4

10:19 am-6:29 pm

1 stop9h 10m

Houston George Bush Intcntl

lun. 12/8

8:07 pm-7:34 pm

1 stop22h 27m

$146

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

mié. 1/7

11:50 am-4:19 pm

2 stops29h 29m

Houston George Bush Intcntl

mié. 1/14

8:16 pm-8:55 am

1 stop11h 39m

$166

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

mié. 1/7

11:50 am-12:26 pm

1 stop25h 36m

Houston George Bush Intcntl

mié. 1/14

8:16 pm-8:55 am

1 stop11h 39m

$169

IslipHouston

ISP - IAH

ISPIAH

Islip Long Island

mar. 12/9

8:29 pm-6:29 pm

1 stop23h 00m

Houston George Bush Intcntl

jue. 12/11

8:07 pm-7:34 pm

1 stop22h 27m

$170

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

mié. 1/7

12:40 pm-8:45 pm

1 stop9h 05m

Houston Hobby

mié. 1/14

6:00 am-11:55 am

1 stop4h 55m

$267

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

mié. 1/7

6:00 am-12:50 pm

2 stops7h 50m

Houston Hobby

mié. 1/14

6:00 am-11:55 am

1 stop4h 55m

$272

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

mié. 1/7

6:00 am-12:50 pm

2 stops7h 50m

Houston Hobby

mié. 1/14

12:30 pm-9:55 pm

2 stops8h 25m

$277

IslipHouston

ISP - HOU

ISPHOU

Islip Long Island

mar. 4/21

12:30 pm-7:10 pm

1 stop7h 40m

Houston Hobby

mar. 4/28

6:00 am-1:50 pm

1 stop6h 50m

$345

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 $463.

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 $317. 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.

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

Direct flights	None

There are no direct flights from Islip, New York to Houston. There are no popular flight routes from Islip, New York to Houston.

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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 5h 40m 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 November 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 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.