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$1,808+ Cheap flights from Islip, NY (ISP) to Barcelona

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BCN
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Islip to Barcelona

Cheapest flights from Islip to Barcelona
Explore the most affordable flight options available from Islip to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This BusinessClass deal was found by Cheapflights users on 1/27. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/139:59 am
ISP
-
BCN
2 stops28h 51m
Multiple Airlines
Fri 3/203:35 pm
BCN
-
ISP
2 stops32h 09m
Multiple Airlines
Deal found 1/27$1,808

Find flight deals from Islip to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

January

Average price

$388
Provider with most accurate pricing for New York (NYC)-Barcelona flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Barcelona flights.
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Barcelona 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 January 27, 2026.
Use the filters below to find and compare flights from Islip to Barcelona that are best for you.

Fly from

Islip

Fly to

Barcelona

Route

Depart

Return

Price

IslipBarcelona

ISP - BCN

ISPBCN

Islip Long Island

Fri 3/13

9:59 am-7:50 pm

2 stops28h 51m

Barcelona-El Prat

Fri 3/20

3:35 pm-6:44 pm

2 stops32h 09m

$1,808

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Best time to book a flight from Islip to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona 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 Barcelona

What is the cheapest month to book a flight from Islip, New York to Barcelona?

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Barcelona (average of $285). Flying from Islip, New York to Barcelona in June is currently the most expensive (average of $438). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Islip to Barcelona. 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 Barcelona?

    Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to Barcelona. You should not have trouble finding flights to Barcelona from Long Island; the airport handles an average of 0 outbound flights to Barcelona per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Islip airport to Barcelona. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Islip, New York to Barcelona?

    Currently, January is the cheapest month in which you can book a flight from Islip, New York to Barcelona (average of $285). Flying from Islip, New York to Barcelona in June is currently the most expensive (average of $438). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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