Silversea, an ultra-luxury line known for all-inclusive cruising throughout the world, offers a 14-night cruise aboard it's Silver Spirit ship that originates from New York City and makes a stop in Cork, Ireland on its second to last day. In addition to a four-day trans-Atlantic crossing, the cruise makes stops in Boston, Halifax, St. John's, Cardiff and Plymouth, England.
Holland America offers a couple of options for those looking to visit Ireland on their cruise. The New York-originating, nine-day Classic Crossing features a stop in Cork before disembarking in Rotterdam.
For those looking for a longer trans-Atlantic cruise, the 21-day Classic Crossing and Baltic Adventure cruise also features a stop in Cork, but builds on the Classic Crossing itinerary with stops in Scandinavian and Eastern European port cities before disembarking in Rotterdam.
If you are originating in London and looking to visit Ireland in route to a final destination of New York City, Crystal Cruises has a handful of options for you aboard their luxury liners. The 14-day Passage of the Vikings cruise begins in London and visits Dublin on the second day before an extended trans-Atlantic crossing that visits Reykjavik, Iceland, Nuuk, Greenland and Halifax, Nova Scotia before finally docking in NYC.
Crystal Cruises also offers a longer London to New York Cruise that not only visits Dublin but also Waterford and Belfast. In addition to the Irish ports, the cruise visits Holyhead, Wales, Edinburgh, Scotland, Nuuk, Reykjavik and finally Halifax en route to New York City.