Public transport is in an option if you prefer travelling by bus or you are on a restricted budget.
SAVDA is the main bus operator with connections to the Aosta Valley.
From Chamonix to Courmayeur by bus - The same bus company services Chamonix Mont Blanc (France) to Courmayeur and the Aosta Valley.
From Aosta to Courmayeur by bus - there are direct buses linking the two towns (approx. eight per day)