Cheap flights from Islip to Houston (ISP - IAH)

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How to find the cheapest flight from
Islip (ISP) to Houston (IAH)

All the information you need to plan the best ISP to IAH flight in 2021: compare Islip to Houston flight prices with the expected peak season, weather and rainfall in Houston.
What is the cheapest month to fly from Islip, New York to Houston?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to Houston. Flights to Houston from Islip, New York in August are about $233 on average during August, but can be found for as low as $37.

What is the cheapest day to fly round-trip from Islip, New York to Houston?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 132%.

When is the cheapest time to fly from Islip, New York to Houston (ISP - HO1)?

When flying from Islip, New York to Houston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 13% versus a flight in the afternoon.

How far in advance should I book a flight from Islip, New York to Houston?

To save on the cost of your flight from Islip, New York to Houston, book at least 30 days before your planned departure. Booking around this time can save you about 39% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $260 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $337.

Cheap flights from Islip to Houston in October, November 2021

The best prices found for ISP to IAH flights for October, November
12 Nov - 15 Nov
$146pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
ISP
Islip Long Island
30 Oct - 6 Nov
$152pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
 
1 STOP
ISP
Islip Long Island
30 Oct - 6 Nov
$156pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
   
2 STOPS
ISP
Islip Long Island

Islip Long Island to Houston 2021 flight deals

Cheap flights to Houston from Islip found for this year
12 Nov - 15 Nov
$146pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
ISP
Islip Long Island
30 Oct - 6 Nov
$152pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
 
1 STOP
ISP
Islip Long Island
30 Oct - 6 Nov
$156pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
   
2 STOPS
ISP
Islip Long Island

Last minute flights from Islip to Houston

Late deals on round-trip flights to Houston from Islip, departing today and this week
26 Oct - 1 Nov
$174pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
ISP
Islip Long Island
26 Oct - 1 Nov
$178pp
ISP
Islip Long Island
American Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
   
2 STOPS
ISP
Islip Long Island
26 Oct - 1 Nov
$182pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
   
2 STOPS
ISP
Islip Long Island

One-way flights to Houston from Islip

The cheapest one-way flights from Islip to Houston
1:32 pm - 12:38 pm
Multiple Airlines
1 Stop
24h 06m
ISP - IAH
Multiple Airlines
$52
Kiwi.com
2:15 am - 7:33 am
American Airlines
1 Stop
6h 18m
ISP - IAH
American Airlines
2:26 pm - 3:34 am
Multiple Airlines
1 Stop
14h 08m
ISP - IAH
Multiple Airlines
$106
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Islip</span> to <span class="emphasized">Houston</span> flights.

Flight FAQs

From Islip to Houston

What airport do you fly from for flights from Islip to Houston?

For a flight from Islip to Houston, you will be flying from Long Island. Islip Long Island (ISP) is just 7.2 mi from the center of the city. Long Island is the only Islip airport and it handles 0 outbound flights to Houston per day. 2 airlines have flights to Houston from Islip Long Island on a regular basis.

Which airlines flying from Islip Long Island to Houston have flexible cancellations due to COVID-19?

American Airlines and Delta are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Islip, New York to Houston for under $200 on Cheapflights?

Yes, there are multiple flights from Islip, New York to Houston for under $200. The cheapest flight booked recently is on Multiple Airlines for just $146, but on average you can expect to pay $182.

Are there last-minute flights available from Islip, New York to Houston for under $200?

There are currently 9+ open flights from Islip, New York to Houston within the next 7 days for less than $200.

What is the cheapest airline to fly from Islip, New York to Houston round-trip?

American Airlines, at $175, was found to be the cheapest airline from Islip, New York to Houston.. American Airlines is currently priced 52% below the average price you’ll pay for this route.

What are the cheapest flights from Islip, New York to Houston?

On average you can expect to pay $365 for a flight from Islip, New York to Houston. The cheapest flight overall is $187 while the most popular route, (Islip Long Island - Houston Hobby) is currently priced at $174.

COVID Restrictions

View COVID Travel Restrictions for Houston, TX

Do I need a COVID test to fly to Houston from Islip?

Information is based on travel restrictions for travel to Houston within the United States

Most visitors from Islip Long Island need to provide a negative COVID-19 test result and/or quarantine to enter Houston.

COVID-19 testing requirements
Visitors from Islip Long Island must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Houston.

Quarantine requirements
Visitors from Islip Long Island are not required to quarantine after entering Houston.

Do I need a test to fly back to Islip from Houston?

Returning to Islip Long Island from Houston

COVID-19 testing requirements
Visitors from Houston must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Islip Long Island.

Quarantine requirements
Visitors from Houston are not required to quarantine after entering Islip Long Island.

Hide COVID Travel Restrictions for Houston, TX

Alternative routes for Islip to Houston

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Houston

Things to know before you go - useful duration and weather info for your trip from Islip to Houston.
Average temperature for October in Houston
77.0 °F

Airports servicing Islip

Airports servicing Houston

Hourly flight availability from Islip to Houston

See what time of day planes typically take off from Islip towards Houston.
Afternoon Noon to 6 PM 100% of ISP to IAH departures
Early morning Midnight to 6 AM 0% of ISP to IAH departures
Morning 6 AM to noon 0% of ISP to IAH departures
Evening 6 PM to midnight 0% of ISP to IAH departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Islip to Houston
See how many times per day planes take to the skies headed from Islip to Houston.
Sunday
0 flights
Monday
1 daily flight
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
1 daily flight
Friday
1 daily flight
Saturday
0 flights
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