Question 1

E

Accepted Answer

In terms of precipitation, rainfall in Islip, New York ranges from 84.0 - 112.0 mm per month. March is typically the wettest month, when rainfall can reach 112.0 mm. February is typically the driest time to visit Islip, New York when rainfall is around 84.0 mm.

Question 2

E

Accepted Answer

If weather is an important factor for your trip to Islip, New York, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Question 3

What are the most popular routes from Region of Ontario to Islip, New York?

Accepted Answer

When deciding which route to take from Region of Ontario to Islip, New York consider Toronto Pearson Intl - Islip Long Island, Montreal Pierre Elliott Trudeau Intl - Islip Long Island or Ottawa - Islip Long Island as they are the most popular.

Question 4

How far in advance should I book a flight from Region of Ontario to Islip, New York?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 54 days in advance, which can save you up to 64% on flights from Region of Ontario to Islip, New York compared to booking the week you need them. Waiting 54 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 325. For sooner than that we have options available in the next 3 days from C$ 501.

Question 5

What is the cheapest month to fly from Region of Ontario to Islip, New York?

Accepted Answer

Our data shows that May tends to be the cheapest month to fly to Islip, New York from Region of Ontario. Users have commonly found prices around C$ 309 for the month, but tickets can be as low as C$ 163. Due to multiple factors, prepare for potentially higher prices in December.

Question 6

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

Accepted Answer

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

Question 7

What airport do you fly into for flights to Islip from Ontario?

Accepted Answer

For a flight from Ontario to Islip, you will be flying into Long Island. Islip Long Island (ISP) is just 11.6 km from the centre of the city.

Question 8

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

Accepted Answer

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

Question 9

How can I find direct flights from Ontario to Islip?

Accepted Answer

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

Question 10

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

Accepted Answer

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

Question 11

How does Cheapflights help users find flights from Ontario to Islip?

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Islip from Ontario today with Cheapflights!

Question 12

Why should you use Cheapflights to find cheap flight tickets from Ontario to Islip?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Islip from Ontario.

Question 13

Can Cheapflights find flights from Ontario to Islip with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from Ontario to Islip with no change fees.

Question 14

Can Cheapflights notify me if prices for flights from Ontario to Islip become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Ontario to Islip on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	C$ 548
One-way from	C$ 441
Popular in	December
Cheapest in	May
Average price	C$ 324

Cheap flights from Ontario to Islip, NY from C$ 441

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Islip

Keep the following information in mind while searching for Ontario to Islip flight deals. Data was last updated 31 July 2025.

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Cheapest flights from Ontario to IslipExplore the most affordable flight options available from Ontario to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

Explore the most affordable flight options available from Ontario to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

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Related info for your journey

Find useful and relevant information for your journey from Ontario to Islip. 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 into for flights to Islip from Ontario?

What are the most popular routes from Region of Ontario to Islip, New York?

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

How can I find direct flights from Ontario to Islip?

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

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Alternative routes for Ontario to Islip

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How does Cheapflights help users find flights from Ontario to Islip?

Why should you use Cheapflights to find cheap flight tickets from Ontario to Islip?

Can Cheapflights find flights from Ontario to Islip with no change fees?

Can Cheapflights notify me if prices for flights from Ontario to Islip become cheaper?

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Cheapest flights from Ontario to Islip
Explore the most affordable flight options available from Ontario to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.