ISP

$137 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 5/18. 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

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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Flights 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.

Recent round-trip flight deals from Houston to Islip

KAYAK's recommended round-trip deals from the most popular airlines that fly from Houston to Islip.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
9:05 pm - 10:12 amIAH-ISP
12h 07m1 stop
Frontier Logo
6:48 pm - 10:37 amISP-IAH
16h 49m1 stop
$251Frontier
Find Deal
Wed, May 14 - Mon, May 19
Frontier Logo
9:05 pm - 7:34 pmIAH-ISP
21h 29m1 stop
Frontier Logo
2:04 pm - 8:12 pmISP-IAH
7h 08m1 stop
$271Frontier
Find Deal
Wed, May 21 - Mon, May 26
Frontier Logo
9:05 pm - 10:41 amIAH-ISP
12h 36m1 stop
Frontier Logo
2:04 pm - 8:12 pmISP-IAH
7h 08m1 stop
$280Frontier
Find Deal
Fri, May 16 - Mon, May 26
Frontier Logo
9:05 pm - 10:12 amIAH-ISP
12h 07m1 stop
Frontier Logo
6:48 pm - 10:37 amISP-IAH
16h 49m1 stop
$281Frontier
Find Deal
Sat, May 10 - Sun, May 11
Frontier Logo
8:57 pm - 8:42 pmIAH-ISP
22h 45m1 stop
Frontier Logo
8:21 pm - 10:29 amISP-IAH
15h 08m1 stop
$301Frontier
Find Deal
Fri, May 23 - Mon, May 26
Southwest Logo
8:25 pm - 9:25 amHOU-ISP
12h 00m1 stop
Southwest Logo
6:00 pm - 11:20 pmISP-HOU
6h 20m1 stop
$382Southwest
Find Deal
Thu, Jul 10 - Sun, Jul 13
Southwest Logo
5:15 am - 2:05 pmHOU-ISP
7h 50m2 stops
Southwest Logo
5:25 pm - 11:10 pmISP-HOU
6h 45m1 stop
$386Southwest
Find Deal
Tue, Jul 1 - Sat, Jul 12
Southwest Logo
1:30 pm - 10:55 pmHOU-ISP
8h 25m2 stops
Southwest Logo
6:00 am - 12:00 pmISP-HOU
7h 00m2 stops
$402Southwest
Find Deal
Tue, Jul 1 - Sat, Jul 12
Southwest Logo
4:20 pm - 10:55 pmHOU-ISP
5h 35m1 stop
Southwest Logo
5:25 pm - 11:10 pmISP-HOU
6h 45m1 stop
$406Southwest
Find Deal
Tue, Jul 1 - Sat, Jul 12
Logo
8:24 am - 10:04 amIAH-ISP
24h 40m2 stops
Logo
3:59 pm - 6:59 pmISP-IAH
28h 00m3 stops
$513
Find Deal
Thu, Jun 5 - Fri, Jun 6
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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.

What’s the cheapest day of the week to fly from Houston to Islip?

The average price of all round-trip flights from Houston to Islip clicked on KAYAK for each day over the last 12 months.

When flying from Houston to Islip, you should consider leaving on a Thursday and avoid Tuesdays if you are looking for the best rates. For your return to Houston, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

Find deals

Good to know

Cheapest flight$137
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 $137 for a one-way ticket and $251 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.

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 4294 reviews
8.0Comfort
7.1Food
8.6Crew
7.6Entertainment
8.2Boarding
Airline reviews

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

8.0 ExcellentJonathan, Apr 2025AUS - MSY
Read more Southwest reviews

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

Plz don't take away free bags and free seating

My flight to Chicago left and landed early. My return flight left two minutes late and arrived 2 minutes late. My seat selections were ideal! There were no snacks going to Chicago and no snacks on the return trip. There are no charging outlets on board.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

The last 30 min or so, they put the heat on full. We thought we were being basted.

The fluidity of the entire process of boarding the plane the flight attendants attentiveness. The flight attendants also provided coloring books for my kids who loved it.

The plane wasn’t full, so we got the best seats

It good. Just not that plane didn’t have power outlets to charge devices etc.

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

Information on your arrival and departure airports

Islip (ISP)

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