ISP

$131 Find Cheap Flights from Houston to Islip - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$340
Typical prices: $395-$726
Frontier
Mon 11/19Thu 11/22
IAH - ISP • 1 stop
Cheapest one-way
$131
Typical prices: $169-$288
Multiple Airlines
Sat 12/1
IAH - ISP • 2 stops
Nonstop flights
There are currently no direct flights between Houston and Islip. You'll need to take a connecting flight to reach the destination.
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Top routes
Cheapest • 46% average savings
Most popular
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Top layover airports
Cheapest • Avg $260 (round-trip)
Shortest trip • 5h 53m (one-way)
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Cheap Flights from Houston to Islip

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Houston to Islip

Thu, Nov 19 - Sun, Nov 22
Frontier Logo
12:27 pm - 3:45 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
26h 18m1 stop Orlando
Frontier Logo
4:40 pm - 12:25 amISP  Islip Long Island-IAH Houston George Bush Intcntl
8h 45m1 stop Orlando
$340Frontier
Fri, Nov 13 - Mon, Nov 16
JetBlue Logo
5:46 pm - 9:37 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
26h 51m1 stop Fort Lauderdale
JetBlue Logo
6:00 am - 4:56 pmISP  Islip Long Island-IAH Houston George Bush Intcntl
11h 56m1 stop Fort Lauderdale
$428JetBlue
Wed, Nov 25 - Wed, Dec 2
Multiple Airlines Logo
5:01 am - 3:45 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
9h 44m1 stop Orlando
Multiple Airlines Logo
3:43 pm - 6:37 pmISP  Islip Long Island-IAH Houston George Bush Intcntl
27h 54m2 stops Vero Beach Raleigh-Durham
$432Multiple Airlines
Fri, Nov 13 - Mon, Nov 16
Multiple Airlines Logo
12:27 pm - 5:31 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
28h 04m1 stop Orlando
Multiple Airlines Logo
6:00 am - 4:56 pmISP  Islip Long Island-IAH Houston George Bush Intcntl
11h 56m1 stop Fort Lauderdale
$443Multiple Airlines
Fri, Nov 13 - Mon, Nov 16
JetBlue Logo
5:46 pm - 9:37 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
26h 51m1 stop Fort Lauderdale
JetBlue Logo
6:00 am - 4:56 pmISP  Islip Long Island-IAH Houston George Bush Intcntl
11h 56m1 stop Fort Lauderdale
$453JetBlue
Mon, Dec 7 - Mon, Dec 14
JetBlue Logo
1:10 pm - 10:04 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
7h 54m1 stop Fort Lauderdale
JetBlue Logo
6:00 am - 3:34 pmISP  Islip Long Island-IAH Houston George Bush Intcntl
10h 34m1 stop Fort Lauderdale
$461JetBlue
Wed, Nov 25 - Wed, Dec 2
Multiple Airlines Logo
5:01 am - 3:45 pmIAH  Houston George Bush Intcntl-ISP Islip Long Island
9h 44m1 stop Orlando
Multiple Airlines Logo
6:00 am - 11:04 pmISP  Islip Long Island-IAH Houston George Bush Intcntl
18h 04m1 stop Fort Lauderdale
$463Multiple Airlines
Thu, Nov 19 - Sun, Nov 22
Multiple Airlines Logo
9:14 pm - 11:20 amIAH  Houston George Bush Intcntl-ISP Islip Long Island
37h 06m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham
Multiple Airlines Logo
4:40 pm - 12:25 amISP  Islip Long Island-IAH Houston George Bush Intcntl
8h 45m1 stop Orlando
$475Multiple Airlines
Fri, Nov 13 - Tue, Nov 17
Southwest Logo
5:55 am - 5:05 pmHOU  Houston Hobby-ISP Islip Long Island
10h 10m1 stop Baltimore/Washington
Southwest Logo
6:05 am - 11:20 amISP  Islip Long Island-HOU Houston Hobby
6h 15m1 stop Baltimore/Washington
$542Southwest
Sun, Mar 7 - Sun, Mar 14
Southwest Logo
8:15 am - 6:30 pmHOU  Houston Hobby-ISP Islip Long Island
9h 15m1 stop Tampa
Southwest Logo
6:00 am - 1:45 pmISP  Islip Long Island-HOU Houston Hobby
8h 45m2 stops Baltimore/Washington Austin Bergstrom
$547Southwest
Booking Insights

Price, demand and travel trends for Houston to Islip flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Houston to Islip typically range from $395 to $726. The lowest price found in the past 5 days was $340, on Frontier.

Key details for Houston to Islip flights

Cheapest flight

$131
One-way flight from Houston George Bush Intcntl 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

Your Houston to Islip flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Houston to Islip?

    Only Economy Class is available on flights from Houston to Islip.

  • How long is a flight from Houston to Islip?

    A nonstop flight from Houston to Islip takes 00m, covering 1,462 miles.

  • Do I need a passport to fly from Houston to Islip?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • Have flight prices from Houston to Islip changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $340 to $1,409. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Houston to Islip looking right now?

    One-way fares from Houston to Islip are currently higher than usual. Average one-way flight prices are about $210, which is 7% above the typical average for this route.

  • What car rental options are available at Islip Long Island Airport (ISP)?

    Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates averaging $105 for economy cars. Top options include:

    • Budget
    • Enterprise Rent-A-Car
    • Avis
    • National
    • Empire Rent A Car

  • Which airports can I use when flying from Houston to Islip?

    Flights from Houston to Islip may depart from several airports in Houston area, including Houston Hobby (HOU) and Houston George Bush Intcntl (IAH). Flights usually arrive at Islip Long Island (ISP).

  • Which airports do connecting flights from Houston to Islip pass through?

    Connecting flights from Houston to Islip most commonly pass through:

    • Baltimore/Washington (BWI) - 75% of one-stop connections
    • Orlando (MCO) - 25% of one-stop connections

  • Can I save money by using flexible dates for flights from Houston to Islip?

    Yes. Flexible dates can save you up to 58% on flights from Houston to Islip. Friday is the cheapest departure day at $298 round-trip on average, while Tuesday is the most expensive at $700, a difference of $402.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Houston to Islip?

    Flying via Baltimore/Washington (BWI) gives the shortest average 1-stop total travel time at 5h 53m, compared with 12h 11m via Orlando (MCO).

  • What is the time difference between Houston and Islip?

    Islip is 1 hour ahead of Houston (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Houston to Islip flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Tuesday. On this route, Friday flights average $298, about $402 less than Tuesday fares (57% savings) based on the last 12 months.

More options for your flight from Houston to Islip

Complete your trip to Islip with a hotel stay or car rental