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

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Montreal (YUL) to Islip (ISP), with fares starting from $791.

What is the lowest current fare from YUL to ISP?

The lowest currently-listed fare from Montreal (YUL) to Islip (ISP) is $791 on 2026-08-06.

Is there a direct flight from Montreal to Islip?

There is currently no non-stop service from YUL to ISP. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Montreal to Islip

Cheapest current fares: $791 in August 2026 on connecting flights.

Last updated August 6, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Montreal (YUL) to Islip (ISP). Refreshed daily.

Montreal (YUL) → Islip (ISP)

August 2026 $791

Frequently asked questions

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

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Montreal (YUL) to Islip (ISP), with fares starting from $791.
What is the lowest current fare from YUL to ISP?

The lowest currently-listed fare from Montreal (YUL) to Islip (ISP) is $791 on 2026-08-06.
Is there a direct flight from Montreal to Islip?

There is currently no non-stop service from YUL to ISP. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.