Iona five years luxury sustainability cruise milestone celebrates P&O Cruises’ flagship redefining modern British cruising. Launched in 2020, Iona became the line’s first LNG-powered ship, setting new benchmarks in environmental responsibility, onboard design, dining, and entertainment. With year-round sailings across Europe, the Canary Islands, and long-haul itineraries, Iona continues to blend large-scale luxury with sustainability, shaping the future of eco-conscious cruise travel.