The squad on Saturday evening set off to London ahead of Sunday's Premier League clash at the London Stadium.
Manchester United are on Sunday looking to bounce back from a disappointing defeat to Young Boys in the Champions League with an improved performance against West Ham.
The Hammers will prove a stern test, having continued their form from last season into the start of the new campaign, finding themselves unbeaten in the early stages.
Unlike United, West Ham's good domestic form continued onto the continent with an impressive victory over Dinamo Zagreb in the Europa League, featuring a fine goal from Ole Gunnar Solskjaer target Declan Rice.
Solskjaer will take encouragement with the absence of Michail Antonio, who is this weekend suspended after earning himself a red card in the closing stages of last week's 0-0 draw away to Southampton.
United are making the trip down south via the air and Scott McTominay was a welcome face in the squad after a period on the sidelines, joining the likes of Cristiano Ronaldo, Jadon Sancho and former Hammers loanee Jesse Lingard.