Paul and Nancy touched down at New York’s John F. Kennedy International Airport on Sunday evening.
He carried his essentials in a black duffle bag as he joined his partner, in her native state, ahead of their annual trip to St Barts.
Paul, who has five children and eight grandchildren, had a festive hit in 1979 with Wonderful Christmastime, which reached No.8 in the Irish charts.
He also spoke in the interview of how he is traditional when it comes to Christmas dinner – although, of course, it must be vegetarian.
‘Years ago I thought there’s not very good Christmas records,’ he told BBC Radio 4’s World At One. ‘I like something traditional and simple and easy so I went into my studio and I made one.
‘This has not been released it’s just for the family. It gets brought out each year.
‘The kids like it and it’s kind of traditional and now it’s the grandkids getting indoctrinated with my carols record. Then there’s the booze… It’s all very jolly.’