$802 Cheap Flights from Dublin (DUB) to Islip (ISP)

View $802 flight on Fri, Nov 28, 2025Opens in a new window

Popular airlines from Dublin Airport (DUB) to MacArthur Airport (ISP)

Cheap Flights from Dublin to Islip (DUB-ISP)

Prices were available within the past 7 days and start at $802 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Dublin (DUB) to Islip (ISP)
Origin airport
Dublin
Destination airport
MacArthur
Distance
3137 mi

Dublin to Islip Flights

The cheapest times to fly from Dublin to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Dublin to Islip are during the month of . You can find some of the cheapest flights from Dublin to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dublin to Islip

Sunday is one of the best days to book for cheap flights from Dublin to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Dublin to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Dublin to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $802 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Dublin to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Dublin to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Dublin Airport (DUB) to MacArthur Airport (ISP) cost?
Lock in a cheap one-way flight from $802 or cheap return flight from Dublin Airport (DUB) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Dublin Airport (DUB) to MacArthur Airport (ISP)?
The cheapest month to fly from DUB to ISP is , when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Dublin Airport (DUB) to MacArthur Airport (ISP)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DUB to ISP flight.
How many flights per day from Dublin Airport (DUB) to MacArthur Airport (ISP)?
You'll need to catch a flight with a layover when traveling from Dublin Airport (DUB) to MacArthur Airport (ISP). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from DUB to ISP?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dublin Airport (DUB) to MacArthur Airport (ISP)?
To reach MacArthur Airport (ISP) on schedule, select a flight that leaves from Dublin Airport (DUB) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Islip from Dublin Airport (DUB)?
Check out your flight options from Dublin Airport (DUB) to John F. Kennedy Intl. Airport (JFK). This is the only airport in Islip you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Dublin Airport (DUB) to MacArthur Airport (ISP) last-minute?
Last-minute bookings from DUB to ISP are generally more expensive. For the best prices, start searching for flights ahead of time. That being said, if your travel plans are flexible, you may find a cheap fare just before your departure.
Is it cheaper to book a DUB to ISP flight and hotel package?
Compared with arranging flights and hotels separately, booking a DUB to ISP flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place takes the hassle out of travel planning. Simply pick your flights and select from our wide range of stays, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Dublin Airport (DUB) to MacArthur Airport (ISP)?
If you booked your DUB to ISP flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.