Delaware

$167+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — ILG
Apr 29 — May 61
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Cheap flight deals from Islip to Delaware

Keep the following information in mind while searching for Islip to Delaware flight deals. Data was last updated April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$200
(Lucky2Go)

One-way from

$167
(JetBlue)

Popular in

February

Cheapest in

September

Average price

$390
Provider with most accurate pricing for New York (NYC)-Philadelphia flight deals.
Provider most trusted by Cheapflights users for New York (NYC)-Philadelphia flights.
From Islip Long Island to Delaware
One-way flight from Islip Long Island to Delaware
Highest demand for flights based on searches. 16% potential increase in price ($56 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from Islip to Delaware

Cheapest flights from Islip to Delaware
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 April 24, 2025.

This Lucky2Go deal was found by Cheapflights users on 4/23. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/911:02 amISP - PHL
1 stop25h 32mFrontier
Tue 5/134:09 pmPHL - ISP
1 stop26h 16mFrontier
Deal found 4/23$200
This JetBlue deal was found by Cheapflights users on 4/23. 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 5/176:00 amISP - PHL
1 stop3h 38mJetBlue
Sat 5/176:10 pmPHL - ISP
1 stop3h 18mJetBlue
Deal found 4/23$523

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 April 24, 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

Fri 5/9

11:02 am-12:34 pm

1 stop25h 32m

Philadelphia

Tue 5/13

4:09 pm-6:25 pm

1 stop26h 16m

$200

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Sat 5/17

6:00 am-9:38 am

1 stop3h 38m

Philadelphia

Sat 5/17

6:10 pm-9:28 pm

1 stop3h 18m

$523

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Sat 6/7

6:00 am-9:55 am

1 stop3h 55m

$167

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Sat 6/7

2:25 pm-9:34 pm

2 stops31h 09m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

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

Rainfall in Delaware by month

Plan your trip to Delaware by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.

Temperature in Delaware by month

Plan your trip to Delaware by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Delaware, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Delaware

Get insights into the airlines that provide service to Delaware. 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 Delaware. Reviews last updated April 24, 2025.

Comfort

7.6

Crew

8.0

Overall

7.3

Entertainment

7.3

Boarding

7.5

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2025

JFK - CHS

Boarding took a very long time, in fact we were delayed by at least 30mins. There wasn’t many options for snacks and there was only water. The pilot did an excellent job

Comfort

7.6

Crew

8.0

Overall

7.3

Entertainment

7.3

Boarding

7.5

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2025

JFK - CHS

Boarding took a very long time, in fact we were delayed by at least 30mins. There wasn’t many options for snacks and there was only water. The pilot did an excellent job

Comfort

7.6

Crew

8.0

Overall

7.3

Entertainment

7.3

Boarding

7.5

Food

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Feb 2025

JFK - CHS

Boarding took a very long time, in fact we were delayed by at least 30mins. There wasn’t many options for snacks and there was only water. The pilot did an excellent job

Related info for your journey

Find useful and relevant information for your journey from Islip to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Islip to Delaware?

    Islip Long Island (ISP), located 7.2 mi from the city center, is the airport you fly out of when you book flights from Islip to Delaware.

  • Can I find deals for flights from Islip to Delaware that include hotel bookings?

    Yes. In addition to deals on Islip to Delaware flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Delaware?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Delaware.

  • Can I find deals for business class flights from Islip to Delaware?

    Yes. Cheapflights offers flight deals from Islip to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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