They are already planning on crossing the Atlantic once this summer with a trip to Canada from June 30 to July 8.
And Prince William and his new bride Catherine, Duchess of Cambridge have announced they will be also crossing into America from Canada.
The royal newlyweds will visit California from July 8 to July 10 - though their precise itinerary has not been made public yet.
The trip will be the first time 29-year-old Kate visits the US.
Although William has travelled there privately it will be his first visit in an official capacity.