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Cheap flights from Islip, New York to Barcelona from $531

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Barcelona departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:30 am - 8:25 amISP-BCN
18h 55m2 stops
Multiple Airlines Logo
10:10 am - 7:45 pmBCN-ISP
15h 35m2 stops
$1,834Multiple Airlines
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Fri, Dec 5 - Fri, Dec 12

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Barcelona-El Prat Airport 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, momondo users made 832,500 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from Islip, New York to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipBarcelona

ISP - BCN

ISPBCN

Islip Long Island

Fri 12/5

7:30 am-8:25 am

2 stops18h 55m

Barcelona-El Prat

Fri 12/12

10:10 am-7:45 pm

2 stops15h 35m

$1,834

IslipBarcelona

ISP - BCN

ISPBCN

Islip Long Island

Thu 1/22

11:35 am-8:55 pm

2 stops27h 20m

$531

IslipBarcelona

ISP - BCN

ISPBCN

Islip Long Island

Thu 1/22

11:35 am-11:35 pm

3 stops30h 00m

$573

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Islip, New York to Barcelona-El Prat Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Tuesday when prices can be found for as low as $621. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $725. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from Islip, New York in the morning is the least expensive time of day to depart. momondo users have found prices as low as $638 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $734 on average. Flights to Barcelona-El Prat Airport from Islip, New York in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Islip, New York to Barcelona-El Prat Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Barcelona-El Prat Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Barcelona-El Prat Airport (ISP to BCN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Barcelona-El Prat Airport

Direct flights

None
There are no direct flights from Islip, New York to Barcelona-El Prat Airport. There are no popular flight routes from Islip, New York to Barcelona-El Prat Airport.
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  • How far is Islip Long Island to Barcelona-El Prat by plane?

    Islip Long Island and Barcelona-El Prat are 3789.9 mi apart from one another. A reasonable flight in good conditions will take 18h 55m.

  • When did momondo last update prices for flights from Islip Long Island Airport to Barcelona-El Prat Airport?

    Prices for flights from Islip Long Island Airport to Barcelona-El Prat Airport are updated daily.

  • How old do you have to be to fly from Islip Long Island Airport to Barcelona-El Prat Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The necessary travel and health documents for your Barcelona-El Prat Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
Tossa de Mar
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Badalona
Pineda de Mar
Roses
Calella
Pals
Palafrugell
Tortosa
Malgrat de Mar

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Barcelona?

Finding the right flight to Barcelona from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Barcelona quick and easy, saving you time and money.

Can I find flights from Islip to Barcelona with flexible booking policies on momondo?

All flight searches from Islip to Barcelona on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Islip to Barcelona?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Barcelona from Islip.

I’m not ready to book a flight from Islip to Barcelona right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to Barcelona now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Barcelona and let you know when they change.

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