ISP

$125 Find Cheap Flights from Houston to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Houston to Islip departing on 6/27. 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 Islip

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

Cheapest round-trip
$230
Frontier
Fr 5/29So 5/31
IAH - ISP • 1 stop
Cheapest one-way
$125
Frontier
Sa 6/27
IAH - ISP • 1 stop
Top airlines
Cheapest • from $230 (round-trip)
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 Islip!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Houston to Islip

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Houston to Islip 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 Houston to Islip

Fr, Mai 29 - So, Mai 31
Frontier Logo
1:29 pm - 10:05 am
IAH
-
ISP
19h 36m
1 stop
Frontier Logo
11:00 am - 8:50 am
ISP
-
IAH
22h 50m
1 stop
$230Frontier
Fr, Jun 12 - Mo, Jun 15
Frontier Logo
7:24 pm - 10:03 am
IAH
-
ISP
13h 39m
1 stop
Frontier Logo
10:48 am - 8:47 am
ISP
-
IAH
22h 59m
1 stop
$250Frontier
Fr, Mai 15 - Mo, Mai 18
Frontier Logo
1:29 pm - 10:05 am
IAH
-
ISP
19h 36m
1 stop
Frontier Logo
11:00 am - 9:00 am
ISP
-
IAH
23h 00m
1 stop
$252Frontier
Sa, Mai 16 - Di, Mai 19
Frontier Logo
7:44 pm - 10:27 am
IAH
-
ISP
13h 43m
1 stop
Frontier Logo
5:38 pm - 8:55 am
ISP
-
IAH
16h 17m
1 stop
$253Frontier
Mo, Jun 1 - Mi, Jun 3
Multiple Airlines Logo
8:50 pm - 4:47 pm
IAH
-
ISP
18h 57m
2 stops
Multiple Airlines Logo
11:00 am - 10:16 pm
ISP
-
IAH
12h 16m
1 stop
$267Multiple Airlines
Mo, Mai 11 - Fr, Mai 15
Multiple Airlines Logo
7:44 pm - 11:00 am
IAH
-
ISP
14h 16m
1 stop
Multiple Airlines Logo
11:00 am - 10:16 pm
ISP
-
IAH
12h 16m
1 stop
$269Multiple Airlines
Di, Sep 22 - Di, Sep 29
Southwest Logo
8:00 am - 4:55 pm
HOU
-
ISP
7h 55m
1 stop
Southwest Logo
6:05 am - 1:15 pm
ISP
-
HOU
8h 10m
1 stop
$341Southwest
Di, Sep 22 - Di, Sep 29
Southwest Logo
11:00 am - 9:05 pm
HOU
-
ISP
9h 05m
2 stops
Southwest Logo
6:05 am - 1:15 pm
ISP
-
HOU
8h 10m
1 stop
$346Southwest
Di, Sep 22 - Di, Sep 29
Southwest Logo
11:00 am - 9:05 pm
HOU
-
ISP
9h 05m
2 stops
Southwest Logo
12:55 pm - 7:30 pm
ISP
-
HOU
7h 35m
2 stops
$363Southwest
Fr, Jun 12 - Mo, Jun 15
Southwest Logo
3:25 pm - 11:35 pm
HOU
-
ISP
7h 10m
1 stop
Southwest Logo
5:50 pm - 10:15 pm
ISP
-
HOU
5h 25m
1 stop
$365Southwest
Booking Insights

KAYAK's insights & trends for Houston to Islip flights

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

Which airlines provide the cheapest flights from Houston to Islip?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Houston to Islip were found on Frontier ($230) and Southwest ($341).

Good to know

Cheapest flight$125
Flight from Houston George Bush Airport to Islip

When to book flights from Houston to Islip

Are your dates flexible? Find out the best times to travel from Houston to Islip 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 Houston to Islip

  • What is the cheapest flight from Houston to Islip?

    In the last 3 days, the lowest price for a flight from Houston to Islip was $125 for a one-way ticket and $230 for a round-trip.

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

    A passport is required to fly from Houston to Islip.

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

    On your way to Islip, you’ll fly out from one of these Houston airports: Houston Hobby or Houston George Bush Intcntl. You’ll be landing at Islip Long Island.

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

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

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

    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 Houston to Islip.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Houston 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 Houston to Islip?

    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 Islip with an airline and back to Houston with another airline.

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

    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 Islip from Houston 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 Houston to Islip

 
See real verified KAYAK customer reviews for airlines flying from Houston to Islip. 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 Houston to Islip? 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 4317 reviews
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
Airline reviews

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

10.0 Excellentdebra, Apr 2026
LBB - LAS
Read more Southwest reviews

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

Had a great flight. Delayed takeoff, but comfortable. Snacks were good.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

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

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.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

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

Information on your arrival and departure airports