To save on the cost of your flight from Harrisburg to Portsmouth, New Hampshire, book at least 35 days before your planned departure. Booking around this time can save you about 61% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $362 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $475.
Our data shows that January tends to be the cheapest month to fly to Portsmouth, New Hampshire from Harrisburg. Users have commonly found prices around $312 for the month, but tickets can be as low as $187. Due to multiple factors, prepare for potentially higher prices in July.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Harrisburg to Portsmouth, New Hampshire as you normally would.