That was just one of several helicopter rides on the agenda for Trump, whose staff opted to keep him largely out of central London and the swarms of demonstrators who are likely to provide some of the defining images of his first official trip to the United Kingdom.
A large police presence has been building up outside the palace in Oxfordshire and BBC News correspondent Duncan Kennedy said about 500-600 protesters bearing placards were demonstrating before Mr Trump's arrival.
The US president' four-day visit is expected to cost the taxpayers with a police and security bill of up over US$10 million, the Telegraph has reported.
However, the Scottish Government approved the plans with the UK Supreme Court eventually rejecting Mr Trump's legal challenge in 2015.
It is not simply the protesters, who are expected to dog Trump throughout his visit, including his weekend in Scotland, but his fraught relationship with political leaders accustomed to harmonious exchanges with US leaders, a tradition of unity that goes back at least to the vital World War II partnership of Franklin D. Roosevelt and Winston Churchill.
The US President reached London after attending a North Atlantic Treaty Organisation summit in Brussels, where he said member countries agreed to increase their military spending.
Mr Trump's intervention comes at the end of a tumultuous few days for Ms May. Trump said Khan has "done a very bad job on terrorism" as he allowed too many immigrants into the city - despite the fact that the Mayor doesn't control migration.
'Policies that are having very real impacts on real lives not just in the U.S. but all over the world'. Organizers now say they hope to take the blimp on a "world tour", following Trump on his global diplomatic engagements.
US Embassy issues warning of possible Trump protest violence
Gatherings and rallies are planned across the United Kingdom from Thursday, when Mr Trump is expected to touch down in Britain. According to The Guardian , Trump's itinerary will largely keep him away from the capital city.
The trip coincides with a tumultuous week for May after two senior ministers resigned in protest at her plans for trade with the European Union after Britain leaves next March. He claimed he was not trying to pit Johnson against his host, but added: "I am just saying I think he would be a great prime minister. Now, for the benefit of all our people, let us work together to build a more prosperous future", she said. "I mean, the list goes on", he said.
A high metal fence has been erected around the USA ambassador's central London residence where Trump will spend Thursday night and the embassy has sent out an alert warning Americans in London to keep a low profile in case protests turn violent.
More recently, in February, Trump once again tried but failed to make hand-to-hand contact with his wife as they departed the White House for a trip to Ohio.
The 6m high balloon shows Mr Trump as a giant baby in a nappy with his trademark blonde hair.
Tall metal mesh barricades and concrete blocks have been erected around the perimeter of the US Ambassador's swanky central London residence, Winfield House, where Trump will spend Thursday night.
Yet according to David Wemer of the Atlantic Council, a new U.S. -U.K. trade deal isn't a high priority for the Trump administration.
After London, he will travel to Scotland and then onto Helsinki to meet with Russian president Vladimir Putin.