The 59-year-old actor, his wife and three of his children were on hand Friday and Saturday for a two-day event marking the milestone at the field in Dyersville, where the movie was filmed.
Before some 12,000 fans had a chance to inundate the little farm, the Costner family took some quiet moments alone to appreciate the setting and play a little catch with dad.
The last time Costner made a visit to the farm was eight years ago, when his band, Modern West, performed in the field.
Costner said it was fitting to observe the 25th anniversary of the film on Father's Day weekend.
The movie deals "with that biblical thing of men and their sons and maybe not getting along," he said, and "I think women watch how beautifully orchestrated this movie was and they actually could turn to their husbands that maybe have never made peace with their father, or turned to their husbands who haven't made peace with their own sons, and say, 'You need to do something about this. You don't want to go through life and wish you had played catch.' "