$98+ Cheap flights from Houston to Islip, NY (ISP)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ISP
Sep 6 — Sep 131
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 August 7, 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 August 7, 2026.
This CheapOair deal was found by Cheapflights users on 8/4. 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.
Sat 9/198:25 pm -
1 stop19h 33m
Mon 9/215:43 pm -
1 stop28h 31m
Deal found 8/4![Frontier logo]()
$206
This CheapOair deal was found by Cheapflights users on 8/7. 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 9/295:43 pm -
1 stop28h 31m
Deal found 8/7![Frontier logo]()
$220
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:45 pm -
1 stop27h 29m
Wed 9/95:43 pm -
1 stop16h 43m
Deal found 8/5![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:09 pm -
1 stop20h 54m
Sun 10/254:13 pm -
1 stop29h 51m
Deal found 8/2![Frontier logo]()
$231
This CheapOair deal was found by Cheapflights users on 8/4. 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.
Fri 8/283:25 pm -
1 stop17h 28m
Fri 9/47:09 pm -
1 stop13h 53m
Deal found 8/4![Frontier logo]()
$234
This CheapOair deal was found by Cheapflights users on 8/3. 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.
Wed 8/261:45 pm -
1 stop19h 08m
Sun 8/307:09 pm -
1 stop13h 53m
Deal found 8/3![Frontier logo]()
$238
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:25 pm -
1 stop17h 28m
Tue 9/810:57 am -
1 stop29h 16m
Deal found 8/6![Frontier logo]()
$242
This CheapOair deal was found by Cheapflights users on 8/3. 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.
Fri 8/283:25 pm -
1 stop17h 28m
Sun 8/307:09 pm -
1 stop13h 53m
Deal found 8/3![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:25 pm -
1 stop17h 28m
Mon 9/710:57 am -
2 stops45h 20m
Deal found 8/2![Frontier logo]()
$256
This CheapOair deal was found by Cheapflights users on 8/2. 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 9/1112:21 pm -
1 stop27h 37m
Thu 9/175:43 pm -
1 stop16h 43m
Deal found 8/2![Frontier logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:45 pm -
1 stop19h 08m
Tue 9/85:27 pm -
2 stops14h 50m
Deal found 8/2![Multiple Airlines logo]()
$264
This Southwest deal was found by Cheapflights users on 8/6. 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 9/1110:05 am -
1 stop5h 20m
Thu 9/176:10 am -
2 stops8h 50m
Deal found 8/6![Southwest logo]()
$330
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 August 7, 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 August 7, 2026.
This JetBlue deal was found by Cheapflights users on 8/5. 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.
Tue 9/11:00 pm -
1 stop7h 49m
Wed 9/26:00 am -
1 stop6h 47m
Deal found 8/5![JetBlue logo]()
$307
This Southwest deal was found by Cheapflights users on 8/6. 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 9/1110:05 am -
1 stop5h 20m
Thu 9/176:10 am -
2 stops8h 50m
Deal found 8/6![Southwest logo]()
$330
This JetBlue deal was found by Cheapflights users on 8/6. 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.
Sat 9/1912:58 pm -
1 stop9h 24m
Sun 9/207:00 am -
1 stop9h 47m
Deal found 8/6![JetBlue logo]()
$307
This Southwest deal was found by Cheapflights users on 8/4. 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
Mon 9/215:00 pm -
1 stop6h 25m
Deal found 8/4![Southwest logo]()
$335
This JetBlue deal was found by Cheapflights users on 8/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:00 pm -
1 stop7h 49m
Sat 9/56:00 am -
1 stop6h 47m
Deal found 8/4![JetBlue logo]()
$337
This Southwest deal was found by Cheapflights users on 8/5. 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 9/16:05 am -
1 stop5h 05m
Sun 9/612:20 pm -
1 stop6h 00m
Deal found 8/5![Southwest logo]()
$347
This JetBlue deal was found by Cheapflights users on 8/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:58 pm -
1 stop9h 24m
Sun 9/207:00 am -
1 stop9h 47m
Deal found 8/4![JetBlue logo]()
$337
This JetBlue deal was found by Cheapflights users on 8/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:58 pm -
1 stop9h 24m
Sun 9/137:00 am -
1 stop9h 47m
Deal found 8/4![JetBlue logo]()
$337
This Southwest deal was found by Cheapflights users on 8/2. 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 10/2010:55 am -
1 stop8h 00m
Sun 10/256:15 pm -
1 stop6h 30m
Deal found 8/2![Southwest logo]()
$371
This JetBlue deal was found by Cheapflights users on 8/5. 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 9/1112:58 pm -
1 stop9h 24m
Sun 9/137:00 am -
1 stop9h 47m
Deal found 8/5![JetBlue logo]()
$337
This Southwest deal was found by Cheapflights users on 8/4. 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.
Wed 9/28:00 am -
1 stop7h 55m
Tue 9/810:55 am -
1 stop6h 15m
Deal found 8/4![Southwest logo]()
$384
This Southwest deal was found by Cheapflights users on 8/6. 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.
Thu 9/35:05 am -
1 stop5h 50m
Wed 9/910:55 am -
1 stop6h 15m
Deal found 8/6![Southwest logo]()
$421
This JetBlue deal was found by Cheapflights users on 8/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:00 pm -
1 stop7h 37m
Mon 11/166:00 am -
1 stop6h 47m
Deal found 8/4![JetBlue logo]()
$400
This JetBlue deal was found by Cheapflights users on 8/5. 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.
Wed 8/261:00 pm -
1 stop7h 44m
Thu 9/34:58 pm -
1 stop7h 01m
Deal found 8/5![JetBlue logo]()
$455
This JetBlue deal was found by Cheapflights users on 8/5. 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.
Thu 8/271:00 pm -
1 stop7h 49m
Thu 9/34:58 pm -
1 stop7h 01m
Deal found 8/5![JetBlue logo]()
$455
This JetBlue deal was found by Cheapflights users on 8/5. 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.
Wed 8/261:00 pm -
1 stop7h 44m
Wed 9/26:00 am -
1 stop6h 47m
Deal found 8/5![JetBlue logo]()
$455
This JetBlue deal was found by Cheapflights users on 8/6. 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.
Sun 8/231:00 pm -
1 stop8h 04m
Mon 8/316:00 am -
1 stop6h 47m
Deal found 8/6![JetBlue logo]()
$515
Last-minute flights from Houston to IslipDiscover last-minute flight deals from Houston to Islip. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Islip. Data last updated August 7, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/3. 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.
Wed 8/261:45 pm -
1 stop19h 08m
Sun 8/307:09 pm -
1 stop13h 53m
Deal found 8/3![Frontier logo]()
$238
This CheapOair deal was found by Cheapflights users on 8/4. 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.
Fri 8/283:25 pm -
1 stop17h 28m
Fri 9/47:09 pm -
1 stop13h 53m
Deal found 8/4![Frontier logo]()
$234
This CheapOair deal was found by Cheapflights users on 8/3. 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.
Fri 8/283:25 pm -
1 stop17h 28m
Sun 8/307:09 pm -
1 stop13h 53m
Deal found 8/3![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:25 pm -
1 stop17h 28m
Mon 9/710:57 am -
2 stops45h 20m
Deal found 8/2![Frontier logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:45 pm -
1 stop19h 08m
Tue 9/85:27 pm -
2 stops14h 50m
Deal found 8/2![Multiple Airlines logo]()
$264
This Trip.com deal was found by Cheapflights users on 8/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:45 pm -
1 stop27h 29m
Wed 9/95:43 pm -
1 stop16h 43m
Deal found 8/5![Frontier logo]()
$226
This Expedia deal was found by Cheapflights users on 8/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:25 pm -
1 stop17h 28m
Tue 9/810:57 am -
1 stop29h 16m
Deal found 8/6![Frontier logo]()
$242
This CheapOair deal was found by Cheapflights users on 8/2. 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 9/1112:21 pm -
1 stop27h 37m
Thu 9/175:43 pm -
1 stop16h 43m
Deal found 8/2![Frontier logo]()
$263
This Southwest deal was found by Cheapflights users on 8/6. 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 9/1110:05 am -
1 stop5h 20m
Thu 9/176:10 am -
2 stops8h 50m
Deal found 8/6![Southwest logo]()
$330
This CheapOair deal was found by Cheapflights users on 8/4. 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.
Sat 9/198:25 pm -
1 stop19h 33m
Mon 9/215:43 pm -
1 stop28h 31m
Deal found 8/4![Frontier logo]()
$206
This Southwest deal was found by Cheapflights users on 8/4. 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
Mon 9/215:00 pm -
1 stop6h 25m
Deal found 8/4![Southwest logo]()
$335
This CheapOair deal was found by Cheapflights users on 8/7. 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 9/295:43 pm -
1 stop28h 31m
Deal found 8/7![Frontier logo]()
$220
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 August 7, 2026.
Search for one-way flight options from Houston to Islip. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This Frontier deal was found by Cheapflights users on 8/2. 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 8/278:57 am -
1 stop8h 17m
Deal found 8/2![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 8/5. 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.
Sun 9/68:57 am -
1 stop8h 17m
Deal found 8/5![Frontier logo]()
$116
This Frontier deal was found by Cheapflights users on 8/5. 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 9/78:57 am -
1 stop8h 17m
Deal found 8/5![Frontier logo]()
$141
This JetBlue deal was found by Cheapflights users on 8/5. 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.
Sun 8/301:00 pm -
1 stop8h 04m
Deal found 8/5![JetBlue logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:45 pm -
1 stop27h 29m
Deal found 8/2![Frontier logo]()
$158
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:57 am -
1 stop8h 17m
Deal found 8/4![Frontier logo]()
$163
This JetBlue deal was found by Cheapflights users on 8/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:00 pm -
1 stop7h 49m
Deal found 8/4![JetBlue logo]()
$169
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:10 pm -
1 stop11h 51m
Deal found 8/4![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 8/2. 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 8/288:57 am -
1 stop8h 17m
Deal found 8/2![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Tue 8/186:00 am -
2 stops26h 53m
Deal found 8/5![Frontier logo]()
$190
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/138:10 pm -
1 stop11h 51m
Deal found 8/4![Frontier logo]()
$191
This Southwest deal was found by Cheapflights users on 8/2. 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.
Wed 8/196:25 am -
1 stop7h 30m
Deal found 8/2![Southwest logo]()
$243
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 August 7, 2026.
Round-trip from | $206 (CheapOair) |
|---|---|
One-way from | $98 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $303 |
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 2,558,603 searches. Data last updated August 7, 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
Tue 9/1
1:00 pm-9:49 pm
1 stop7h 49m
Islip Long Island
Wed 9/2
6:00 am-11:47 am
1 stop6h 47m
$307
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Sat 9/19
12:58 pm-11:22 pm
1 stop9h 24m
Islip Long Island
Sun 9/20
7:00 am-3:47 pm
1 stop9h 47m
$307
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Fri 9/11
10:05 am-4:25 pm
1 stop5h 20m
Islip Long Island
Thu 9/17
6:10 am-2:00 pm
2 stops8h 50m
$330
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Sat 9/19
5:00 am-12:05 pm
1 stop6h 05m
Islip Long Island
Mon 9/21
5:00 pm-10:25 pm
1 stop6h 25m
$335
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Tue 9/1
1:00 pm-9:49 pm
1 stop7h 49m
Islip Long Island
Sat 9/5
6:00 am-11:47 am
1 stop6h 47m
$337
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Sat 9/12
12:58 pm-11:22 pm
1 stop9h 24m
Islip Long Island
Sun 9/20
7:00 am-3:47 pm
1 stop9h 47m
$337
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Thu 9/10
12:58 pm-11:22 pm
1 stop9h 24m
Islip Long Island
Sun 9/13
7:00 am-3:47 pm
1 stop9h 47m
$337
HoustonIslip
IAH Houston George Bush Intcntl - ISP Islip Long Island
IAHISP
Houston George Bush Intcntl
Fri 9/11
12:58 pm-11:22 pm
1 stop9h 24m
Islip Long Island
Sun 9/13
7:00 am-3:47 pm
1 stop9h 47m
$337
Quickest round-trip
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Tue 9/1
6:05 am-12:10 pm
1 stop5h 05m
Islip Long Island
Sun 9/6
12:20 pm-5:20 pm
1 stop6h 00m
$347
HoustonIslip
HOU Houston Hobby - ISP Islip Long Island
HOUISP
Houston Hobby
Tue 10/20
10:55 am-7:55 pm
1 stop8h 00m
Islip Long Island
Sun 10/25
6:15 pm-11:45 pm
1 stop6h 30m
$371
Showing 1-10 of 29 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
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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 August 7, 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.
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
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Other flights to Islip
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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 2,558,603 searches. Data last updated August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$574 | FlexibilityNo cancel fee | On-time63% |