Three venues are hosting the fixtures - the MetLife Stadium in New Jersey, Chicago's Soldier Field and the Mercedes-Benz Stadium in Atlanta.
There is a game taking place on the pitch before each of United's fixtures, kicking off three hours earlier, so the grounds will contain fans from all four clubs.
FULL SCHEDULE
New Jersey:
Sat 26 July | Everton v Bournemouth | 21:00 BST
Sun 27 July | United v West Ham | 00:00 BST
Chicago:
Wed 30 July | West Ham v Everton | 23:30 BST
Thu 31 July | United v Bournemouth | 02:30 BST
Atlanta:
Sun 3 Aug | Bournemouth v West Ham | 19:00 BST
Sun 3 Aug | United v Everton | 22:00 BST