$262+ Cheap flights from Islip, NY (ISP) to Delaware
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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — ILG
Jan 14 — Jan 211
1 adult, Economy
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Cheapest flights from Islip to DelawareExplore the most affordable flight options available from Islip to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.
Explore the most affordable flight options available from Islip to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
Sun 12/1411:15 amISP - PHL
1 stop28h 01mMultiple Airlines
Sun 12/216:00 amPHL - ISP
2 stops31h 09mMultiple Airlines
Deal found 12/13![Multiple Airlines logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/168:29 pmISP - PHL
1 stop23h 14mMultiple Airlines
Tue 12/231:54 pmPHL - ISP
2 stops27h 20mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$453
This Kiwi.com deal was found by Cheapflights users on 12/13. 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.
Sun 12/1411:15 amISP - PHL
1 stop28h 01mFrontier
Sun 12/211:46 pmPHL - ISP
1 stop23h 23mFrontier
Deal found 12/13![Frontier logo]()
$462
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/168:29 pmISP - PHL
1 stop23h 14mFrontier
Tue 12/238:30 amPHL - ISP
1 stop30h 40mFrontier
Deal found 12/15![Frontier logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/297:25 amISP - SBY
2 stops11h 57mMultiple Airlines
Fri 1/28:02 pmSBY - ISP
1 stop22h 43mMultiple Airlines
Deal found 12/14![Multiple Airlines logo]()
$1,410
Find flight deals from Islip to Delaware
Keep the following information in mind while searching for Islip to Delaware flight deals. Data was last updated December 15, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $483 (Kiwi.com) |
One-way from | $262 (Kiwi.com) |
Popular in | July |
Cheapest in | March |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Delaware 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 December 15, 2025.
Use the filters below to find and compare flights from Islip to Delaware that are best for you.
Fly from
Islip
Fly to
Delaware
Route
Depart
Return
Price
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Thu 1/1
11:40 am-11:56 pm
2 stops12h 16m
Philadelphia
Sat 1/3
10:00 pm-7:39 pm
1 stop21h 39m
$483
IslipSalisbury
ISP - SBY
ISPSBY
Islip Long Island
Mon 12/29
7:25 am-7:22 pm
2 stops11h 57m
Salisbury-Ocean City
Fri 1/2
8:02 pm-6:45 pm
1 stop22h 43m
$1,410
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Mon 12/29
8:35 pm-12:41 am
2 stops28h 06m
$262
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Mon 12/29
8:35 pm-11:34 pm
3 stops26h 59m
$308
Best time to book a flight from Islip to Delaware
Have a flexible travel schedule? Discover the best time to fly to Delaware from Islip with our price prediction graph.
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 Islip to Delaware
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