The absence of Trump's tour from her speech wsa clearest signal yet that no date has been agreed on his controversial visit.
Plans now being worked up would see Mr Trump visit London early next year, meeting with British counterparts and the new U.S. ambassador Woody Johnson.
However he will not sleep at Buckingham Palace as the guest of the Queen, and there will not be a glitzy banquet in his honour.
Plans are underway for the 71-year-old to make a "working trip" in January, a downgrade from the more formal State Visit Theresa May invited him on following his inauguration.
The full state visit has been put on hold. "The state visit should never have been offered, and with reports that Trump doesn't want to come if he will face protests, it may well never happen".
Downing Street declined to comment but has said that its position has not changed since the offer was extended and accepted.
US Withdraws From UNESCO
Bokova called the U.S.'s planned departure a loss for "the United Nations family" and for multilateralism. Washington cited anti-Israel bias and the need for reform of the organization as the reason.
A US senior diplomat who requested anonymity told The Telegraph that Trump would possibly spend his alleged working trip to the United Kingdom to help open a new American embassy in London.
Almost 200 MPs signed an early motion opposing Mr Trump addressing both houses of Parliament, with Speaker John Bercow voicing his opposition to his visit during a session in the House of Commons.
Then-US President Barack Obama and First Lady Michelle Obama with the Queen during a 2011 State Visit.
It remains uncertain if the tour would include a meeting with Queen Elizabeth II, which would have been at the heart of the pomp and show that accompanies a state visit traditionally hosted by the British monarch.
Jeremy Shapiro claimed Trump was "exploiting" Britain's romantic view of the special relationship to get a post-Brexit trading deal that benefited America.