$105 Find Cheap Flights from Islip to Houston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Houston departing on 4/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Houston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Houston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Houston, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$210
Frontier
Fri 4/24Sun 4/26
ISP - IAH • 1 stop
Cheapest one-way
$105
Frontier
Thu 4/9
ISP - IAH • 1 stop
Top airlines
Frontier
Cheapest • from $210 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Houston!
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Booking Insights
Flight Deals

Cheap Flights from Islip to Houston (ISP-HOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Houston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Houston

Fri, Apr 24 - Sun, Apr 26
Frontier Logo
4:07 pm - 8:38 am
ISP
-
IAH
17h 31m
1 stop
Frontier Logo
5:12 pm - 9:28 am
IAH
-
ISP
15h 16m
1 stop
$210Frontier
Fri, Apr 24 - Thu, Apr 30
Frontier Logo
4:07 pm - 8:38 am
ISP
-
IAH
17h 31m
1 stop
Frontier Logo
7:55 pm - 9:13 am
IAH
-
ISP
12h 18m
1 stop
$217Frontier
Fri, May 8 - Tue, May 12
Frontier Logo
11:00 am - 6:49 pm
ISP
-
IAH
8h 49m
1 stop
Frontier Logo
8:02 pm - 10:05 am
IAH
-
ISP
37h 03m
2 stops
$235Frontier
Sun, Apr 12 - Thu, Apr 16
Frontier Logo
7:59 pm - 7:02 am
ISP
-
IAH
12h 03m
1 stop
Frontier Logo
7:55 pm - 9:13 am
IAH
-
ISP
12h 18m
1 stop
$250Frontier
Thu, Apr 16 - Sun, Apr 19
Frontier Logo
4:07 pm - 8:38 am
ISP
-
IAH
17h 31m
1 stop
Frontier Logo
7:46 pm - 9:13 am
IAH
-
ISP
12h 27m
1 stop
$260Frontier
Wed, Apr 15 - Sun, Apr 19
Multiple Airlines Logo
11:50 am - 1:03 pm
ISP
-
IAH
26h 13m
1 stop
Multiple Airlines Logo
6:00 am - 1:31 pm
IAH
-
ISP
30h 31m
2 stops
$301Multiple Airlines
Wed, Apr 15 - Sun, Apr 19
Southwest Logo
5:15 pm - 10:45 pm
ISP
-
HOU
6h 30m
1 stop
Southwest Logo
5:05 am - 11:50 am
HOU
-
ISP
5h 45m
1 stop
$322Southwest
Wed, Apr 15 - Sun, Apr 19
Southwest Logo
6:30 am - 1:40 pm
ISP
-
HOU
8h 10m
2 stops
Southwest Logo
5:05 am - 11:50 am
HOU
-
ISP
5h 45m
1 stop
$327Southwest
Sat, May 23 - Fri, May 29
Southwest Logo
4:40 pm - 9:40 pm
ISP
-
HOU
6h 00m
1 stop
Southwest Logo
5:30 am - 11:50 am
HOU
-
ISP
5h 20m
1 stop
$341Southwest
Sun, Apr 12 - Thu, Apr 23
Southwest Logo
6:05 am - 11:20 am
ISP
-
HOU
6h 15m
1 stop
Southwest Logo
5:05 pm - 11:30 pm
HOU
-
ISP
5h 25m
1 stop
$346Southwest
Booking Insights

KAYAK's insights & trends for Islip to Houston flights

Get data-powered insights and trends into flights from Islip to Houston to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Islip, New York to Houston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip, New York to Houston departing in April.
Find deals

Good to know

Cheapest flight$105
Flight from Islip to Houston George Bush Airport

When to book flights from Islip to Houston

Are your dates flexible? Find out the best times to travel from Islip to Houston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to Houston

  • What is the cheapest flight from Islip to Houston?

    In the last 3 days, the lowest price for a flight from Islip to Houston was $105 for a one-way ticket and $210 for a round-trip.

  • Do I need a passport to fly between Islip and Houston?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Islip and on arrival in Houston.

  • Which airports will I be using when flying from Islip to Houston?

    When flying out of Islip you will be using Islip Long Island. You will be landing at one of these airports: Houston Hobby or Houston George Bush Intcntl.

  • Which aircraft models fly most regularly from Islip to Houston?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to Houston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to Houston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to Houston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to Houston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston with an airline and back to Islip with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to Houston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Islip to Houston

 
See real verified KAYAK customer reviews for airlines flying from Islip to Houston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to Houston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4320 reviews
8.0Comfort
8.1Boarding
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

I elected to pay for the upgrades and found very little difference

6.0 GoodChris, Mar 2026
DAL - SAT
Read more Southwest reviews

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Everything you need to know for your flight from Islip to Houston

Information on your arrival and departure airports

Islip (ISP)