The best pricing can be found in the month of February. Prices to Portsmouth, New Hampshire from Portland average $511. You can even find prices in February for less than $511, as users have found deals to Portsmouth, New Hampshire from as low as $258. The month of July appears to be one of the more expensive times to travel to Portsmouth, New Hampshire from Portland. Flying in the targeted month can save you up to 45%.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Portsmouth, New Hampshire as you normally would.
PDX stands for Portland Airport, while PSM stands for Portsmouth Pease Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.