In a mixing bowl, combine flour, baking powder, and salt. Add cold butter cubes and cut in with a pastry cutter or fork until the mixture resembles coarse crumbs.
Gradually add milk (and honey or sugar if using), stirring just until combined. Be careful not to overmix.
Turn the dough out onto a lightly floured surface. Gently pat or roll to ½-inch thickness.
Use a biscuit cutter or glass to cut out biscuits. Gather scraps and re-roll to make more biscuits.
Place the biscuits on a baking sheet, then arrange them in the air fryer basket in a single layer.
Air fry for 10-12 minutes, until the biscuits are golden and cooked through.
Remove from air fryer and let cool slightly before serving.
Notes
For extra fluffy biscuits, make sure your butter and milk are very cold.
Adjust sweetness according to your preference.
Cooking times may vary depending on air fryer model and biscuit thickness.