HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belgium

Cheap flights from Islip (ISP) to Belgium

ISP — BRU
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Islip to Belgium with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Islip to Belgium

Keep the following information in mind while searching for Islip to Belgium flight deals. Data was last updated September 17, 2025.

Popular in

June

Cheapest in

January

Average price

$681
Highest demand for flights based on searches. 13% potential increase in price ($107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Cheapflights Insights

Everything you need to know about your flight from Islip to Belgium

What is the cheapest month to book a flight from Islip to Belgium?

Currently, November is the cheapest month in which you can book a flight from Islip to Belgium (average of $614). Flying from Islip to Belgium in June is currently the most expensive (average of $1,077). 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 Belgium. 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 Belgium?

    Located just 7.2 mi from the city center, Islip Long Island (ISP) is the airport most travelers will use when flying to Belgium from Islip.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to Belgium 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 to Belgium?

    Currently, November is the cheapest month in which you can book a flight from Islip to Belgium (average of $614). Flying from Islip to Belgium in June is currently the most expensive (average of $1,077). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Belgium

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Heathrow flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Istanbul flights
Newark to Orly flights
Newark to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
John F Kennedy Intl to Orly flights
Newark to Gatwick flights
John F Kennedy Intl to Lisbon flights
Newark to Madrid flights
LaGuardia to Charles de Gaulle flights
John F Kennedy Intl to Gatwick flights
Newark to Lisbon flights
Newark to Barcelona-El Prat flights
John F Kennedy Intl to Madrid flights
John F Kennedy Intl to Barcelona-El Prat flights
Newark to Malpensa flights
John F Kennedy Intl to Frederic Chopin flights
Newark to Frankfurt flights
John F Kennedy Intl to Athens flights
Newark to Athens flights
Newark to Dublin flights
LaGuardia to Gatwick flights
Newark to London City flights
John F Kennedy Intl to Frankfurt flights
John F Kennedy Intl to Amsterdam flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Malpensa flights
John F Kennedy Intl to Stansted flights
John F Kennedy Intl to Dublin flights
John F Kennedy Intl to Beauvais-Tille flights
John F Kennedy Intl to Luton flights
Newark to Amsterdam flights
John F Kennedy Intl to Keflavik Intl flights
John F Kennedy Intl to Zurich flights
LaGuardia to Istanbul flights
Newark to Keflavik Intl flights
Newark to Beauvais-Tille flights
LaGuardia to Madrid flights
Newark to Stansted flights
Newark to Zurich flights
John F Kennedy Intl to Munich flights
Newark to Luton flights
LaGuardia to Lisbon flights
Newark to Frederic Chopin flights
Newark to Berlin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.