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

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Islip (ISP) to Buffalo (BUF), with fares starting from $172.

What is the lowest current fare from ISP to BUF?

The lowest currently-listed fare from Islip (ISP) to Buffalo (BUF) is $172 on 2026-05-31.

Is there a direct flight from Islip to Buffalo?

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

Cheap flights from Islip to Buffalo

Cheapest current fares: $172 in May 2026 on connecting flights.

Last updated May 23, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Islip (ISP) to Buffalo (BUF). Refreshed daily.

Islip (ISP) → Buffalo (BUF)

May 2026 $172

Frequently asked questions

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

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Islip (ISP) to Buffalo (BUF), with fares starting from $172.
What is the lowest current fare from ISP to BUF?

The lowest currently-listed fare from Islip (ISP) to Buffalo (BUF) is $172 on 2026-05-31.
Is there a direct flight from Islip to Buffalo?

There is currently no non-stop service from ISP to BUF. 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.