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Cheap flights to Portsmouth, New Hampshire

— PSM
10 Oct — 17 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals to Portsmouth

Return from

£472

Popular in

June

Cheapest in

February

Average price

£475
Air France
  • Air France
  • 13/10-20/10
  • Nonstop
  • 14h 21m total
  • London to Boston
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Highest demand for flights based on searches. 9% potential increase in price (£53 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for return flights in September 2026
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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.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

Rainfall in Portsmouth 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

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.

  • What airport do you fly into for flights to Portsmouth?

    Most people fly into Portsmouth Pease Intl (PSM) if they book a flight to Portsmouth. Pease Intl is conveniently located just 3.2 mi from Portsmouth’s city center.

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • Does Portsmouth Pease Intl have car hire?

    Yes. Those touching down at Portsmouth Pease Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Portsmouth Pease Intl?

    Yes. Portsmouth Pease Intl has hotels nearby for those requiring accommodations. Residence Inn by Marriott Portsmouth is the closest property to Portsmouth Pease Intl (0.0 mi away from Portsmouth Pease Intl).

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