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Cheap flights from Belfast to Portsmouth, New Hampshire

BHD — PSM
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Belfast to Portsmouth

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to Portsmouth (PSM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.

Popular in

November

Cheapest in

February

Average price

£531
Highest demand for flights based on searches. 13% potential increase in price (£65 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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Best time to book a flight from Belfast to Portsmouth

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

Related info for your journey

Find useful and relevant information for your journey from Belfast to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most people fly into Portsmouth Pease Intl (PSM) if they book a flight to Portsmouth from Belfast. On average, Pease Intl has 0 inbound flights from Belfast per day from 0 airlines. Portsmouth Pease Intl is conveniently located just 3.2 mi from Portsmouth’s city center.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast 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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Alternative routes for Belfast to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Belfast to Portsmouth via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Portsmouth from Belfast by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

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

Yes, Cheapflights offers price alerts on Belfast to Portsmouth flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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