The club return to North America for the first time since 2011 and are rumoured to be joining the likes of Real Madrid and Manchester City in the 2014 International Champions Cup
The trip marks the first time the club will return to North America following tours in 2010 and 2011 and is rumoured to be part of the 2014 International Champions Cup.
Last season's ICC involved eight teams - including the likes of Chelsea, Juventus, Real Madrid and LA Galaxy - facing selected opponents in America and Spain, with Madrid beating Jose Mourinho's side in the final.
Real Madrid will reportedly defend their crown this summer in a 12-team version, along with the likes of Manchester City, Liverpool and United - though official participation is yet to be confirmed.
Richard Arnold, United's group managing director, said in a statement: "I'm delighted to announce that the team will be returning to the USA for our 2014 Tour, presented by Aon.
"Since the club's last visit in 2011, the appeal of football in America has grown rapidly. NBC reported that this season's Barclays Premier League opening weekend saw the average viewership rise by 78 per cent from the 2012-13 season, with Manchester United's match against Swansea being the most-watched game.
"Manchester United has over eight million followers in the United States and the 2014 Tour presents an exciting opportunity for these fans to get up close to the club they love."