$1,204+ Cheap flights from Islip, NY (ISP) to Frankfurt am Main
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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — FRA
Jan 17 — Jan 241
1 adult, Economy
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Best flights from Islip to Frankfurt am MainDiscover carefully curated flight deals from Islip to Frankfurt am Main that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.
Discover carefully curated flight deals from Islip to Frankfurt am Main that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/307:20 pmISP - FRA
1 stop31h 50mMultiple Airlines
Fri 2/66:30 amFRA - ISP
2 stops20h 17mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$1,204
Find flight deals from Islip to Frankfurt am Main
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Frankfurt am Main (FK0). 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 December 18, 2025.
Most accurate provider | Expedia 2 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $1,204 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $937 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Frankfurt am Main 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 December 18, 2025.
Use the filters below to find and compare flights from Islip to Frankfurt am Main that are best for you.
Fly from
Islip
Fly to
Frankfurt am Main
Route
Depart
Return
Price
IslipFrankfurt am Main
ISP - FRA
ISPFRA
Islip Long Island
Fri 1/30
7:20 pm-9:10 am
1 stop31h 50m
Frankfurt am Main
Fri 2/6
6:30 am-8:47 pm
2 stops20h 17m
$1,204
Best time to book a flight from Islip to Frankfurt am Main
Have a flexible travel schedule? Discover the best time to fly to Frankfurt am Main 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 Frankfurt am Main
What is the cheapest month to book a flight from Islip, New York to Frankfurt am Main?
Currently, January is the cheapest month in which you can book a flight from Islip, New York to Frankfurt am Main (average of $300). Flying from Islip, New York to Frankfurt am Main in December is currently the most expensive (average of $591). 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.