John Candy was 36 in Planes, Trains and Automobiles when he played the character 'Del Griffith'.
That was over 36 years ago in 1987.
In 1994 he died aged just 43, starring in 63 films in his career, 32 of those after Planes, Trains and Automobiles was first released. If he were alive today he would be 73.
In Planes, Trains and Automobiles, I think John Candy looks: