Find a great deal and save up to 46% by booking at least 59 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Portsmouth to Northern Ireland within the next two weeks, with the cheapest ticket starting at £87.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Southampton and Northern Ireland for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
Before booking your flight from Southampton to Northern Ireland, check out the most popular airlines for this route: Flybe, Ryanair or easyJet.