No difference is there between affiliate to and affiliate with. Both prepositions can be used indifferently. I've seen " affiliate to " in relating two colleges or a college to a university. However, affiliate with is more common and used predominantly.

There is no difference between affiliate to and affiliate with. Both prepositions can be used indifferently. I've seen "affiliate to" in relating two colleges or a college to a university. However, affiliate with is more common and used predominantly.