BHD – SOU Belfast Southampton BHD – SOU Belfast Southampton Home > Cheap Flights > Flights to Southampton > From Belfast to Southampton < Cheap Flights < Flights to Southampton Cheap flights from Belfast to Southampton Flybe offer the opportunity to travel to more UK destinations than any other airline. Whether you're travelling for business or to reunite with family and friends, book cheap flights from Belfast to Southampton with Flybe today. You might also like Cheap flights to Southampton