Sift 3 cups all-purpose flour, 1/3 cup granulated sugar, 2 1/2 teaspoons baking powder, 1/2 teaspoon baking soda, 1/2 teaspoon kosher salt, and 1 teaspoon ground cinnamon in a medium mixing bowl.
Cut cold 3/4 cup unsalted butter into small chunks (½ tablespoon-size pieces) and add to the dry ingredients.
Use a pastry blender or two forks to cut the butter into the flour mixture until the butter is broken down into pea-size pieces.
Add 1 cup buttermilk and stir to combine into a rough mixture.
Add the 2/3 cup raisins into the scone mixture and stir or knead very lightly to distribute the raisins throughout the mixture.
Turn dough out onto a lightly floured surface and divide in half.
Form each dough half into a circle and pat out until it is only ¾” thick.
Score the dough lightly into wedges and lift carefully into the greased basket of the air fryer.
Cook in the air fryer at 350°F for 15 minutes or until the scone is cooked all the way through.
Whisk together 1/2 cup powdered sugar, 2 tablespoons maple syrup, and 2-3 tablespoons heavy whipping cream adjusting the amount of cream until desired consistency is reached.
Drizzle glaze over scones and allow to set.