Find cheap flights from Belfast to Portsmouth from £29

When flying out of Belfast you’ll be using one of these airports: Belfast Intl or Belfast City. Portsmouth does not have its own airport so you’ll be flying into nearby Southampton Eastleigh airport, which is 14.7 mi away.

There are no direct flights covering the 316 miles separating Belfast and Portsmouth but indirect flights take around 1h 15m.

Consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Belfast, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast to Portsmouth.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portsmouth from Belfast is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Portsmouth with an airline and back to Belfast with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portsmouth from Belfast up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

In the last 72 hours, the cheapest one-way ticket between Belfast and Portsmouth found on KAYAK was with Aer Lingus for £29. Aer Lingus offered a return connection from £75 and easyJet from £80.