The US president, the King and Queen, and the first Lady watched the RAF jet pilots, who left signature red, white, and blue smoke trails.
During his visit, Mr Trump laid a wreath at Queen Elizabeth II’s grave, witnessed a guard of honour and carriage procession, and was scheduled to attend a state banquet.
He is also due to visit Chequers, Prime Minister Sir Keir Starmer's country residence, on Thursday, 18 September.