Cheap flights to Portsmouth, New Hampshire
Flights to Portsmouth, NH in 2025
Find the latest flights to Portsmouth in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 11 July 2025.
Best time to book a flight to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight to Portsmouth
Rainfall in Portsmouth by month
Plan your trip to Portsmouth by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Portsmouth ranges from 57.0 - 129.0 inches per month. November is typically the wettest month, when rainfall can reach 129.0 mm. August is typically the driest time to visit Portsmouth when rainfall is around 57.0 mm.
Temperature in Portsmouth by month
Plan your trip to Portsmouth by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -4.0 C).
FAQs about flying to Portsmouth
Getting around Portsmouth
To get the most out of a stay in Portsmouth, a rental car is a great idea. Drive into the countryside or cruise the coast as far as Boston. However, during summer and autumn a bus service runs along the coast and the city centre is extremely walkable. There’s no better way to discover the many historical buildings than by taking a stroll.
Getting from the Airport to the City
It’s not hard to get from the Portsmouth International Airport at Pease (PSM) to the centre of Portsmouth. Buses head from the airport to cities like Manchester and Boston, but the best bet for getting into town is to take a taxi or limousine from the terminal doors. There are also specialist airport shuttle buses that need to be booked beforehand, so plan ahead.
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