$345+ Cheap flights from Islip (ISP) to Belgium
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BRU
Oct 13 — Oct 201
1 adult, Economy
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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
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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 13, 2025.
Round-trip from | $1,368 (Ovago) |
|---|---|
One-way from | $345 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $688 |
Find flight deals from Islip to Belgium
Cheapest flights from Islip to BelgiumExplore the most affordable flight options available from Islip to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2025.
Explore the most affordable flight options available from Islip to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2025.
This Ovago deal was found by Cheapflights users on 9/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:19 pmISP - BRU
2 stops13h 21mMultiple Airlines
Sun 10/128:35 pmBRU - ISP
2 stops24h 46mMultiple Airlines
Deal found 9/11![Multiple Airlines logo]()
$1,368
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Belgium 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 September 13, 2025.
Use the filters below to find and compare flights from Islip to Belgium that are best for you.
Fly from
Islip
Fly to
Belgium
Route
Depart
Return
Price
IslipBrussels
ISP - BRU
ISPBRU
Islip Long Island
Wed 10/8
2:19 pm-9:40 am
2 stops13h 21m
Brussels Bruxelles-National
Sun 10/12
8:35 pm-3:21 pm
2 stops24h 46m
$1,368
IslipBrussels
ISP - BRU
ISPBRU
Islip Long Island
Sat 11/15
11:40 am-8:20 pm
3 stops50h 40m
$345
Best time to book a flight from Islip to Belgium
Have a flexible travel schedule? Discover the best time to fly to Belgium 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 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.