In the beginning of the play, witches fortell the future. What do they predict for Macbeth and Banquo?

For Macbeth,

He will be thane of Cawdor and King

For Banquo,

His sons will be kings but he won't.

WE never really find out if Fleance (Banquo's son) becomes a king. Macbeth's predictions come true, largely with the help of Macbeth for becoming King.