Preheat oven to 350°F (175°C). Grease and flour a 9x13 inch baking pan.
In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
In a separate bowl, cream together butter and sugar until light and fluffy. Beat in eggs one at a time, then stir in buttermilk.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the cherries.
Pour batter into the prepared pan and bake for 35-40 minutes, or until a wooden skewer inserted into the center comes out clean.
Let cool completely before serving.
Notes
For a sweeter cake, add 1/2 cup more sugar. You can also use frozen cherries, but make sure to thaw them completely and drain any excess liquid before adding them to the batter.