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Cheap flights to Portsmouth, NH

— PSM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 2,558,603 searches and data was last updated on June 12, 2025.

Popular in

April

Cheapest in

October

Average price

$215

Round-trip from

$130
Highest demand for flights based on searches. 19% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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From New York to Boston Logan Intl
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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 round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 2.2 - 5.1 inches per month. November is typically the wettest month, when rainfall can reach 5.1 in. August is typically the driest time to visit Portsmouth when rainfall is around 2.2 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

FAQs about flying to Portsmouth

Best Time to Fly to Portsmouth, NH

Great shopping, superior accommodation and lots of local events, such as Southsea Fest in September and Christmas attractions in the festive season make Portsmouth a terrific choice for city breaks at any time.  However, the May to September period enjoys the best summer weather and school holidays make it a very popular time for vacationers. 

Thanks to Southsea beach and seasonal attractions such as the Spinnaker Tower which is open daily during July and August, from May till September is the most expensive time to visit.  The cheapest time is undoubtedly from September onwards, with the exception of the Christmas and New Year holiday period.  Since the city is beautiful in spring from March till May, and in autumn from October to November, low season is still an excellent time to plan a trip.

Getting around Portsmouth, NH

The are several excellent local bus services which cover all of downtown, Portsea Island, Southsea and numerous destinations in and around the city.  There are good local taxi firms, and you’ll also find licensed taxis at the airport and in the city center which can simply be flagged down on the street.

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

    If you book a flight to Portsmouth, you will be flying into Pease Intl, which is the city’s only airport. Portsmouth Pease Intl (PSM) is located 3.2 mi from the center of Portsmouth.

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

    Yes, flights with layovers 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.

  • What is the cheapest airport to fly to in Portsmouth?

    Portsmouth Pease Intl is currently the cheapest airport to fly to in Portsmouth. One-way flights to Portsmouth Pease Intl typically cost $47, while round-trip flights cost around $68.

  • How much is a round-trip flight to Portsmouth?

    A round-trip flight to Portsmouth will typically cost around $107, however they can be found for as little as $68.

  • Does Portsmouth Pease Intl have rental cars?

    Yes. Those touching down at Portsmouth Pease Intl can take advantage of the rental car 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 (1.0 mi away from Portsmouth Pease Intl).

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