Did Banquo intend to attend the banquet?

Yes, Banquo intended to attend the banquet to which Macbeth [d. August 15, 1057] had invited him. The banquet was going to be held at Macbeth's palace at Forres. Banquo had to leave. But he indicated that he and his son Fleance would be back in time for the festivities. Banquo didn't make it back in time. Macbeth learned Banquo's route, and sent three murderers after him.