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Cheap flights from London Heathrow Airport to Portsmouth, New Hampshire

LHR — PSM
20 Oct — 27 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Heathrow to Portsmouth

Popular in

June

Cheapest in

February

Average price

£512
Highest demand for flights based on searches. 8% potential increase in price (£37 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Best time to book a flight from Heathrow to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Heathrow with our price prediction graph.
Estimated return price

Related info for your journey

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

    Portsmouth Pease Intl (PSM) is the airport you will fly into if you book a flight from London Heathrow to Portsmouth. You should not have trouble finding flights to Pease Intl from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Portsmouth airport from London Heathrow. It is only a 3.2 mi journey from Pease Intl (PSM) to Portsmouth’s city center.

  • Can I find deals for flights from Heathrow to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Heathrow to Portsmouth flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Portsmouth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Portsmouth.

  • Can I find deals for business class flights from Heathrow to Portsmouth?

    Yes. Cheapflights offers flight deals from Heathrow to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Heathrow to Portsmouth?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Portsmouth from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Portsmouth?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Portsmouth.

Can Cheapflights find flights from Heathrow to Portsmouth with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Portsmouth, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Portsmouth become cheaper?

Of course! You can now track prices for flights from Heathrow to Portsmouth and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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