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

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Montreal (YUL) to Islip (ISP), with fares starting from $412.

What is the lowest current fare from YUL to ISP?

The lowest currently-listed fare from Montreal (YUL) to Islip (ISP) is $412 on 2026-05-31.

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: $412 in May 2026 on connecting flights.

Last updated May 25, 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)

May 2026 $412

Frequently asked questions

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

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Montreal (YUL) to Islip (ISP), with fares starting from $412.
What is the lowest current fare from YUL to ISP?

The lowest currently-listed fare from Montreal (YUL) to Islip (ISP) is $412 on 2026-05-31.
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.