June 27 (Reuters) – Several online travel sites have seen a jump in queries from Americans about travel to the United Kingdom since it voted to leave the European Union, a sign so-called “Brexit” and the resulting drop in the value of the pound currency may spur U.S. visits to Britain. One site found that more Britons were also asking about flights to the United States. Travel agents, hotel chains and airlines say it is too early to tell if the vote has impacted bookings. Financial analysts at the Buckingham Research Group had predicted a “Brexit” would slow the British economy and airline sales. But some U.S. travel agents are advising travellers to book U.K. trips now and expect to see a bump in bookings with time. On June 24, the day after Britain voted to leave the European Union, Priceline Group Inc’s Kayak, said it saw a 54 percent increase in U.S. searches exploring fares to the United Kingdom compared to other Fridays in the month of June. Flight searches from the U.K. for U.S. travel also rose 46 percent, according to Kayak. “Americans may want to secure a great fare, while British may be worried that higher fares will