In terms of precipitation, rainfall in Geneva ranges from 2.7 - 4.1 inches per month. October is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Geneva when rainfall is around 2.7 in.

If weather is an important factor for your trip to Geneva, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

How far in advance should I book a flight from Islip to Geneva?

Users have found that booking a flight from Islip to Geneva at least 45 days early can save you up to 46% on average compared to booking a flight this week. If booking 45 days before your flight isn’t an option for you, users have found flights from Islip to Geneva for as little as $682 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,023 for flights departing within the next 3 days.

What is the cheapest month to fly from Islip to Geneva?

Our data shows that August tends to be the cheapest month to fly to Geneva from Islip. Users have commonly found prices around $820 for the month, but tickets can be as low as $455. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from ISP to GVA?

When flying from Islip to Geneva, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Islip to Geneva?

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

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

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

$1,555+ Cheap Flights from Islip to Geneva

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Cheap flight deals from Islip to Geneva

Popular in	December
Cheapest in	August
Average price	$654

Highest demand for flights based on searches. 7% potential increase in price ($70 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Islip to Geneva

One-way flights from Islip to Geneva
Search for one-way flight options from Islip to Geneva. Find affordable one-way fares based on user searches. Data last updated August 20, 2025.

Wed 9/32:19 pmISP - GVA

2 stops13h 06mMultiple Airlines

Deal found 8/20

$1,555

Tue 9/22:19 pmISP - GVA

2 stops13h 06mMultiple Airlines

Deal found 8/18

$1,598

Tue 8/262:19 pmISP - GVA

2 stops13h 06mMultiple Airlines

Deal found 8/18

$1,611

Mon 8/252:19 pmISP - GVA

2 stops13h 06mMultiple Airlines

Deal found 8/19

$1,639

Sun 9/212:19 pmISP - GVA

2 stops12h 56mMultiple Airlines

Deal found 8/18

$1,666

Mon 9/12:19 pmISP - GVA

2 stops13h 06mMultiple Airlines

Deal found 8/20

$1,667

Fly from

Fly to

Route

Depart

Return

Price

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Wed 9/3

2:19 pm-9:25 am

2 stops13h 06m

$1,555

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Mon 9/8

2:19 pm-9:25 am

2 stops13h 06m

$1,555

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Tue 9/9

2:19 pm-9:25 am

2 stops13h 06m

$1,555

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Tue 9/2

2:19 pm-9:25 am

2 stops13h 06m

$1,598

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Sat 9/20

2:19 pm-9:25 am

2 stops13h 06m

$1,610

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Sat 10/4

2:19 pm-9:25 am

2 stops13h 06m

$1,610

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Wed 9/17

2:19 pm-9:25 am

2 stops13h 06m

$1,610

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Wed 10/1

2:19 pm-9:25 am

2 stops13h 06m

$1,610

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Fri 9/5

2:19 pm-9:25 am

2 stops13h 06m

$1,611

IslipGeneva

ISP - GVA

ISPGVA

Islip Long Island

Wed 9/10

2:19 pm-9:25 am

2 stops13h 06m

$1,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 11 results

Best time to book a flight from Islip to Geneva

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

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

Currently, November is the cheapest month in which you can book a flight from Islip to Geneva (average of $676). Flying from Islip to Geneva in June is currently the most expensive (average of $1,132). 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

Can I find deals for flights from Islip to Geneva that include hotel bookings?
Yes. In addition to deals on Islip to Geneva flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Geneva?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Geneva.
Can I find deals for business class flights from Islip to Geneva?
Yes. Cheapflights offers flight deals from Islip to Geneva 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 Geneva?
Currently, November is the cheapest month in which you can book a flight from Islip to Geneva (average of $676). Flying from Islip to Geneva in June is currently the most expensive (average of $1,132). 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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$1,555+ Cheap flights from Islip (ISP) to Geneva (GVA)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Geneva with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Geneva

Popular in

Cheapest in

Average price

Find flight deals from Islip to Geneva

One-way flights from Islip to GenevaSearch for one-way flight options from Islip to Geneva. Find affordable one-way fares based on user searches. Data last updated August 20, 2025.

Search for one-way flight options from Islip to Geneva. Find affordable one-way fares based on user searches. Data last updated August 20, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Geneva that are best for you.

Best time to book a flight from Islip to Geneva

Have a flexible travel schedule? Discover the best time to fly to Geneva from Islip with our price prediction graph.

Cheapflights Insights

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

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

Related info for your journey

Find useful and relevant information for your journey from Islip to Geneva. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How can I find direct flights from Islip to Geneva?

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

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

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One-way flights from Islip to Geneva
Search for one-way flight options from Islip to Geneva. Find affordable one-way fares based on user searches. Data last updated August 20, 2025.