Yes, you can definitely use flour in an air fryer. Flour is often a key ingredient in the breading that gives deep fried chicken its memorable crunch. Use an egg or milk wash first to help flour stick to your chicken. When dredging, you may need to stick with just one layer of flour instead of double dipping. Because you will not submerge your air fryer chicken in oil, you could end up with some dry flour spots if the coating is too thick.