$123+ Cheap flights from Houston to Islip, NY (ISP)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ISP
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from Houston to Islip with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Houston to Islip
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Cheapest flights from Houston to IslipExplore the most affordable flight options available from Houston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
Explore the most affordable flight options available from Houston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
This CheapOair deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:21 pm -
1 stop23h 37m
Tue 9/295:43 pm -
1 stop28h 31m
Deal found 9/1![Frontier logo]()
$226
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:35 pm -
1 stop19h 56m
Mon 11/26:54 pm -
1 stop27h 01m
Deal found 9/2![Frontier logo]()
$236
This CheapOair deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:21 pm -
1 stop27h 37m
Tue 9/225:43 pm -
1 stop28h 31m
Deal found 9/1![Frontier logo]()
$291
This CheapOair deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:35 pm -
1 stop20h 25m
Sun 10/256:25 pm -
1 stop16h 02m
Deal found 8/30![Frontier logo]()
$309
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:21 pm -
1 stop23h 37m
Sat 10/106:25 pm -
1 stop16h 02m
Deal found 9/2![Frontier logo]()
$318
This CheapOair deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:25 pm -
1 stop19h 33m
Mon 9/215:43 pm -
1 stop22h 30m
Deal found 8/31![Frontier logo]()
$322
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:05 am -
1 stop5h 05m
Mon 10/57:10 pm -
1 stop6h 10m
Deal found 8/30![Southwest logo]()
$323
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:55 am -
1 stop8h 05m
Sat 10/103:50 pm -
1 stop7h 00m
Deal found 9/2![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:15 pm -
1 stop6h 25m
Mon 11/306:00 pm -
1 stop7h 20m
Deal found 8/30![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm -
1 stop5h 15m
Tue 9/226:05 am -
1 stop8h 10m
Deal found 9/2![Southwest logo]()
$485
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:00 am -
2 stops8h 50m
Wed 9/2312:55 pm -
2 stops7h 45m
Deal found 9/4![Southwest logo]()
$495
Best flights from Houston to IslipDiscover carefully curated flight deals from Houston to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Houston to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:05 am -
1 stop5h 05m
Mon 10/57:10 pm -
1 stop6h 10m
Deal found 8/30![Southwest logo]()
$323
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:25 pm -
1 stop19h 33m
Mon 9/215:43 pm -
1 stop22h 30m
Deal found 9/2![Frontier logo]()
$380
This CheapOair deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:21 pm -
1 stop27h 37m
Mon 9/214:26 pm -
2 stops30h 29m
Deal found 8/31![Multiple Airlines logo]()
$447
This KAYAK deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:58 pm -
1 stop9h 24m
Sun 10/47:00 am -
1 stop9h 47m
Deal found 9/3![JetBlue logo]()
$533
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:55 am -
1 stop8h 05m
Sat 10/103:50 pm -
1 stop7h 00m
Deal found 9/2![Southwest logo]()
$337
This CheapOair deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:21 pm -
1 stop27h 37m
Tue 9/294:26 pm -
2 stops30h 29m
Deal found 9/3![Multiple Airlines logo]()
$448
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:28 am -
2 stops33h 30m
Tue 9/295:43 pm -
2 stops29h 47m
Deal found 9/4![Frontier logo]()
$458
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:15 pm -
1 stop6h 25m
Mon 11/306:00 pm -
1 stop7h 20m
Deal found 8/30![Southwest logo]()
$472
This JetBlue deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:30 am -
1 stop9h 07m
Mon 10/266:00 am -
1 stop6h 50m
Deal found 8/31![JetBlue logo]()
$535
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:48 pm -
1 stop18h 29m
Mon 11/308:01 pm -
1 stop24h 56m
Deal found 8/30![Multiple Airlines logo]()
$512
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:00 am -
1 stop6h 05m
Wed 9/2310:55 am -
1 stop6h 15m
Deal found 9/4![Southwest logo]()
$485
This JetBlue deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:58 pm -
1 stop9h 24m
Sun 10/47:00 am -
1 stop9h 47m
Deal found 9/3![JetBlue logo]()
$535
This CheapOair deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:35 pm -
1 stop19h 56m
Mon 11/23:26 pm -
2 stops28h 07m
Deal found 9/1![Multiple Airlines logo]()
$523
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm -
1 stop5h 15m
Tue 9/226:05 am -
1 stop8h 10m
Deal found 9/2![Southwest logo]()
$485
This JetBlue deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:58 pm -
1 stop9h 24m
Mon 10/57:00 am -
1 stop9h 45m
Deal found 9/1![JetBlue logo]()
$535
Last-minute flights from Houston to IslipDiscover last-minute flight deals from Houston to Islip. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Islip. Data last updated September 4, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:05 am -
1 stop5h 05m
Sun 9/206:20 am -
1 stop6h 10m
Deal found 9/1![Southwest logo]()
$556
This CheapOair deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:21 pm -
1 stop27h 37m
Tue 9/225:43 pm -
1 stop28h 31m
Deal found 9/1![Frontier logo]()
$291
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm -
1 stop5h 15m
Tue 9/226:05 am -
1 stop8h 10m
Deal found 9/2![Southwest logo]()
$485
This CheapOair deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:25 pm -
1 stop19h 33m
Mon 9/215:43 pm -
1 stop22h 30m
Deal found 8/31![Frontier logo]()
$322
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:00 am -
2 stops8h 50m
Wed 9/2312:55 pm -
2 stops7h 45m
Deal found 9/4![Southwest logo]()
$495
This CheapOair deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:21 pm -
1 stop23h 37m
Tue 9/295:43 pm -
1 stop28h 31m
Deal found 9/1![Frontier logo]()
$226
This Southwest deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:05 am -
1 stop5h 05m
Mon 10/57:10 pm -
1 stop6h 10m
Deal found 8/30![Southwest logo]()
$323
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:21 pm -
1 stop23h 37m
Sat 10/106:25 pm -
1 stop16h 02m
Deal found 9/2![Frontier logo]()
$318
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:55 am -
1 stop8h 05m
Sat 10/103:50 pm -
1 stop7h 00m
Deal found 9/2![Southwest logo]()
$337
This CheapOair deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:35 pm -
1 stop20h 25m
Sun 10/256:25 pm -
1 stop16h 02m
Deal found 8/30![Frontier logo]()
$309
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:35 pm -
1 stop19h 56m
Mon 11/26:54 pm -
1 stop27h 01m
Deal found 9/2![Frontier logo]()
$236
One-way flights from Houston to IslipSearch for one-way flight options from Houston to Islip. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Houston to Islip. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:04 pm -
2 stops18h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:10 pm -
1 stop11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:04 pm -
2 stops18h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:28 am -
2 stops33h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Frontier logo]()
$135
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:05 am -
1 stop5h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Southwest logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:12 pm -
2 stops37h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$142
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:05 am -
1 stop5h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Southwest logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:28 am -
3 stops33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$170
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:21 pm -
1 stop27h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:04 pm -
2 stops18h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:14 pm -
2 stops19h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$183
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:04 pm -
2 stops18h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$186
Find flight deals from Houston to Islip
Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 4, 2026.
Round-trip from | $226 (CheapOair) |
|---|---|
One-way from | $123 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $293 |
Cheapflights Fare Finder
Customize your flight search to find flights from Houston to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 4, 2026.
Use the filters below to find and compare flights from Houston to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Wed 9/30
4:21 pm-4:58 pm
1 stop23h 37m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$137
Quickest round-trip
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Wed 9/30
6:05 am-12:10 pm
1 stop5h 05m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$138
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Mon 10/26
5:25 am-2:30 pm
1 stop8h 05m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$138
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Mon 9/28
10:05 am-4:25 pm
1 stop5h 20m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$162
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Wed 11/25
6:10 am-7:06 pm
1 stop11h 56m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$181
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Wed 9/16
12:21 pm-4:58 pm
1 stop27h 37m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$181
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Sun 11/22
6:10 am-7:06 pm
1 stop11h 56m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$206
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Mon 10/26
10:12 am-11:20 am
1 stop24h 08m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$219
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Sun 9/27
5:15 am-3:55 pm
1 stop9h 40m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$229
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Sat 11/21
6:10 am-7:06 pm
1 stop11h 56m
Islip Long Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$231
Showing 1-10 of 33 resultsSorted by cheapest first
Best time to book a flight from Houston to Islip
Have a flexible travel schedule? Discover the best time to fly to Islip from Houston with our price prediction graph.
HO1-ISP
IAH-ISP
HOU-ISP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Houston to Islip
HO1-ISP
IAH-ISP
HOU-ISP
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Islip
Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated September 4, 2026.
See what other customers who have flown with Southwest from Houston to Islip have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
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Book flights to Islip if you plan to visit one of these locationsRiverhead
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Other flights to Islip
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Houston and Islip flights
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Top airline flying from Houston to Islip
Discover the top airline that operate flights from Houston to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$387 | FlexibilityNo cancel fee | On-time63% |