Place the frozen meatballs in a single layer into the air fryer basket.
Air fry the meatballs at 375 degrees F for 10 - 11 minutes.
Open the air fryer basket and shake the meatballs around to redistribute them about halfway through cooking time.
Meatballs are finished cooking when they are nicely browned and the internal temperature is 165 degrees F. Be sure and take the temperature of several of the meatballs before serving.