A radically improved US version of the VisitBritain website has enlisted the help of travel technology firm TravelStoreMaker.com to run meta search functionality for flights.
The new VisitBritain.us will include a range of new features, including flight search, trip planner tools, destination guides, itineraries and visitor information.
A string of other international sites are also expected to be rolled out in the coming months.
US visitors accounted for £2.7 billion worth of inbound tourism in the UK in 2006, although France provided the highest number of visitors with 3.7 million.
VisitBritain chief executive Tom Wright said: “As the accessibility and affordability of destinations grows, competition for the world’s travellers has never been tougher and the challenges are greater than ever.
“It’s a tourist board battleground out there. Today’s consumers demand more of a ‘brag factor’ from their travel experiences, have increasing expectations of quality and are more price-sensitive.”