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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Islip, NY

YUL — ISP
7 Oct — 14 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Pierre Elliott Trudeau Intl to Islip

Popular in

July

Cheapest in

November

Average price

C$ 397
Highest demand for flights based on searches. 1% potential increase in price (C$ 9 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Best time to book a flight from Pierre Elliott Trudeau Intl to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Pierre Elliott Trudeau Intl with our price prediction graph.
Estimated round-trip price

Related info for your journey

  • What airport do you fly into for flights to Islip from Montreal Pierre Elliott Trudeau Intl?

    Most people fly into Islip Long Island (ISP) if they book a flight to Islip from Montreal Pierre Elliott Trudeau Intl. On average, Long Island has 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 0 airlines. Islip Long Island is conveniently located just 11.6 km from Islip’s city centre.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Islip that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Islip?

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

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Islip?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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.

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