$514 Cheap Flights from Islip (ISP) to Dublin (DUB)

View $514 flight on Tue, Aug 26, 2025Opens in a new window

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

Cheap Flights from Islip to Dublin (ISP-DUB)

Prices were available within the past 7 days and start at $514 for one-way flights and $773 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, Aug 27 - Tue, Sep 2
ISP
Islip
DUB
Dublin
$773 Roundtrip, found 3 days ago
$773
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Wed, Aug 27 from Islip to Dublin, returning Tue, Sep 2, priced at $773 found 3 days ago
JetBlue Airways
Tue, Aug 26 - Tue, Sep 2
ISP
Islip
DUB
Dublin
$794 Roundtrip, found 4 days ago
$794
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Tue, Aug 26 from Islip to Dublin, returning Tue, Sep 2, priced at $794 found 4 days ago
JetBlue Airways
Thu, Aug 28 - Tue, Sep 2
ISP
Islip
DUB
Dublin
$802 Roundtrip, found 4 days ago
$802
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Thu, Aug 28 from Islip to Dublin, returning Tue, Sep 2, priced at $802 found 4 days ago
JetBlue Airways
Tue, Aug 26 - Tue, Sep 2
ISP
Islip
DUB
Dublin
$835 Roundtrip, found 3 days ago
$835
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Tue, Aug 26 from Islip to Dublin, returning Tue, Sep 2, priced at $835 found 3 days ago
JetBlue Airways
Wed, Aug 27 - Sat, Aug 30
ISP
Islip
DUB
Dublin
$850 Roundtrip, found 3 days ago
$850
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Wed, Aug 27 from Islip to Dublin, returning Sat, Aug 30, priced at $850 found 3 days ago
JetBlue Airways
Thu, Aug 28 - Sat, Aug 30
ISP
Islip
DUB
Dublin
$862 Roundtrip, found 4 days ago
$862
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Thu, Aug 28 from Islip to Dublin, returning Sat, Aug 30, priced at $862 found 4 days ago
JetBlue Airways
Tue, Aug 26 - Sat, Aug 30
ISP
Islip
DUB
Dublin
$868 Roundtrip, found 4 days ago
$868
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Tue, Aug 26 from Islip to Dublin, returning Sat, Aug 30, priced at $868 found 4 days ago
JetBlue Airways
Tue, Aug 26 - Sat, Aug 30
ISP
Islip
DUB
Dublin
$911 Roundtrip, found 3 days ago
$911
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Tue, Aug 26 from Islip to Dublin, returning Sat, Aug 30, priced at $911 found 3 days ago
Cape Air
Tue, Nov 18 - Tue, Nov 25
ISP
Islip
DUB
Dublin
$1,070 Roundtrip, found 3 days ago
$1,070
Roundtrip
found 3 days ago
Select Cape Air flight, departing Tue, Nov 18 from Islip to Dublin, returning Tue, Nov 25, priced at $1,070 found 3 days ago
Southwest Airlines
Tue, Aug 26 - Tue, Sep 2
ISP
Islip
DUB
Dublin
$1,082 Roundtrip, found 3 days ago
$1,082
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Tue, Aug 26 from Islip to Dublin, returning Tue, Sep 2, priced at $1,082 found 3 days ago
Flights from Islip (ISP) to Dublin (DUB)
Origin airport
MacArthur
Destination airport
Dublin
Roundtrip price
$772
Distance
3137 mi

Islip to Dublin Flights

The cheapest times to fly from Islip to Dublin

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 Islip to Dublin are during the month of August. You can find some of the cheapest flights from Islip to Dublin with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Dublin

Sunday is one of the best days to book for cheap flights from Islip to Dublin: 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 Islip to Dublin

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 Islip to Dublin in 2025. You can also book with separate airlines for your outbound and return journeys, from $514 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 Islip to Dublin 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 Islip to Dublin 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 MacArthur Airport (ISP) to Dublin Airport (DUB) cost?
Lock in a cheap one-way flight from $514 or cheap return flight from $773 from MacArthur Airport (ISP) to Dublin Airport (DUB) 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 MacArthur Airport (ISP) to Dublin Airport (DUB)?
August is the least expensive month to fly from ISP to DUB. Timing your trip outside of the busy season is often the key to finding a great deal.
Which airlines fly direct from MacArthur Airport (ISP) to Dublin Airport (DUB)?
While Islip, NY (ISP-MacArthur) doesn't offer any direct flights to Dublin Airport (DUB), other airports have nonstop routes. Departing from John F. Kennedy Intl. Airport (JFK) will get you to Dublin without any layovers.
What is the cheapest airline that flies from MacArthur Airport (ISP) to Dublin Airport (DUB)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from ISP to DUB. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from MacArthur Airport (ISP) to Dublin Airport (DUB)?
There aren't any daily direct flights from MacArthur Airport (ISP) to Dublin Airport (DUB). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from ISP to DUB?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Dublin Airport (DUB)?
To land at Dublin Airport (DUB) on schedule, book a flight that takes off from MacArthur Airport (ISP) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Dublin Airport (DUB) last-minute?
Waiting until right before your break to book a flight from ISP to DUB often results in higher prices. While you may find some last-minute deals, they're not always guaranteed. Allow some flexibility in your schedule to maximize your chances of snagging a bargain.
Is it cheaper to book an ISP to DUB flight and hotel package?
Compared with arranging flights and hotels separately, booking an ISP to DUB flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the hassle out of planning your trip. Simply secure your flights and select from our extensive range of stays, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Dublin Airport (DUB)?
Usually, it's possible to cancel or reschedule your ISP to DUB flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.