Cheap flights from Islip to Houston
Cheapest current fares: $208 in June 2026 on connecting flights.
Cheapest month-by-month fares
Lowest available fare per calendar month from Islip (ISP) to Houston (IAH). Refreshed daily.
Islip (ISP) → Houston (IAH)
- June 2026 $208
Frequently asked questions
-
What is the cheapest month to fly from Islip to Houston?
Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from Islip (ISP) to Houston (IAH), with fares starting from $208.
-
What is the lowest current fare from ISP to IAH?
The lowest currently-listed fare from Islip (ISP) to Houston (IAH) is $208 on 2026-06-02.
-
Is there a direct flight from Islip to Houston?
There is currently no non-stop service from ISP to IAH. 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.