John Heard as Peter McCallister
Peter McCallister, played by John Heard, is the patriarch of the McCallister family. When they realize their son has been left behind, he shares his wife's concern and distress. However, he takes a more composed approach, striving to calm his wife and keep the family together while preparing for their return home.
Amid Kate's frantic dash to reunite with Kevin, Peter takes charge of the remaining children, ensuring their safe journey back home. Their eventual joyous reunion, just in time for Christmas, is marked by relief and a distinct absence of hard feelings.
