Preheat the oven to 425°F.
Place one pie crust into a deep dish pie plate and press it gently into the bottom and sides of the dish.
Spoon the cherry pie filling into the crust, add the almond extract, and stir gently until evenly mixed. Smooth the filling with a spatula.
Lay the second pie crust on a cutting board and make four small cutouts or several slits to allow steam to escape during baking.
Place the second crust over the filling, press the edges of the top and bottom crusts together, trim any excess dough, and crimp the edges as desired.
Brush the top crust lightly with milk and sprinkle with sugar.
Bake for 40 to 45 minutes, covering the outer crust edge with foil or a pie shield after the first 15 minutes to prevent over-browning.
Remove the pie from the oven when the crust is golden and the filling is bubbling near the center.
Cool for at least 1 hour before slicing so the filling can set properly.