To save up to 80% on this flight, we recommend booking at least 39 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Manchester, New Hampshire to Islip, New York from $123 1-2 weeks out and tickets from $175 for flights departing within the next 72 hours.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Manchester, New Hampshire to Islip, New York as you normally would.