Cheap flights from Islip to Houston (ISP - IAH)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

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 2022: compare Islip to Houston flight prices with the expected peak season, weather and rainfall in Houston.
What is the cheapest day to fly round-trip from Islip, New York to Houston?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Houston. Check prices with Cheapflights to find a great deal for your trip.

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

It’s optimal to fly from Islip, New York to Houston in the morning. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest month to fly from Islip, New York to Houston?

Flights from Islip, New York to Houston lean towards being more expensive in December. Prices are generally better when you fly from Islip, New York to Houston in August, with the cheapest ticket starting at $37.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 30 days in advance, which can save you up to 39% on flights from Islip, New York to Houston compared to booking the week you need them. Waiting 30 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $260. For sooner than that we have options available in the next 3 days from $337.

Cheap flights from Islip to Houston in May, June 2022

The best prices found for ISP to IAH flights for May, June
24 May - 28 May
$261pp
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
24 May - 28 May
$265pp
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
24 May - 29 May
$266pp
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

Islip Long Island to Houston 2022 flight deals

Cheap flights to Houston from Islip found for this year
24 May - 28 May
$261pp
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
24 May - 28 May
$265pp
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
24 May - 29 May
$266pp
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

Last minute flights from Islip to Houston

Late deals on round-trip flights to Houston from Islip, departing today and this week
1 Jun - 9 Jun
$471pp
ISP
Islip Long Island
American Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
 
1 STOP
ISP
Islip Long Island
1 Jun - 5 Jul
$490pp
ISP
Islip Long Island
American Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
 
1 STOP
ISP
Islip Long Island
1 Jun - 5 Jul
$630pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
American Airlines
 
1 STOP
ISP
Islip Long Island

One-way flights to Houston from Islip

The cheapest one-way flights from Islip to Houston
2:15 am - 7:15 pm
American Airlines
2 Stops
18h 00m
ISP - IAH
American Airlines
2:14 pm - 9:36 am
Multiple Airlines
2 Stops
20h 22m
ISP - IAH
Multiple Airlines
$248
Kiwi.com
2:49 pm - 1:50 pm
Frontier
2 Stops
24h 01m
ISP - IAH
Frontier
$263
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 JetBlue 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 $400 on Cheapflights?

Yes, there are multiple flights from Islip, New York to Houston for under $400. The cheapest flight booked recently is on Multiple Airlines for just $362, but on average you can expect to pay $556.

Are there last-minute flights available from Islip, New York to Houston for under $500?

There are currently 4+ open flights from Islip, New York to Houston within the next 7 days for less than $500.

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

American Airlines, at $471, was found to be the cheapest airline from Islip, New York to Houston..

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

On average you can expect to pay $543 for a flight from Islip, New York to Houston. The cheapest flight overall is $543 while the most popular route, (Islip Long Island - Houston Hobby) is currently priced at $396.

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 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) 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 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) 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 May in Houston
77.0 °F

Airports servicing Islip

Airports servicing Houston

Home North America USA Texas Houston Cheap flights from Islip to Houston