Preheat oven to 350 F. Line a 12 cup muffin pan with cupcake liners. Set aside. In a large bowl, whisk together flour, sugar, salt and baking powder.
Add in milk, cherry juice, vegetable oil, eggs and vanilla extract, whisk until smooth. Fold in chopped cherries. Evenly divide cupcake batter between the cupcake liners. Bake for 18-22 minutes. Let cool completely.
For the frosting, beat softened butter with powdered sugar, cherry juice and milk until smooth. Pipe or spread frosting onto cupcakes.