Start by preheating the air fryer to 380F (195C)
Add these ingredients to a small bowl: chili powder, smoked paprika, brown sugar, onion powder, cumin, salt, garlic powder, red pepper flakes, and black pepper. Mix everything together.
Coat the ribs in the rub (massage the seasoning into the meat) and place the ribs into the air fryer basket (in a single layer. Air fry in multiple batches if needed).
Air fry them for 8-10 minutes, and then flip them. Air fry them for 10 additional minutes.
Remove the ribs from the air fryer (be careful- they get really hot!). Brush the ribs with 1/4 cup of BBQ sauce, and place them back into the air fryer for 2-3 more minutes at 390F (200C).
Remove the ribs from the air fryer and brush them with the remaining BBQ sauce. Serve and enjoy these delicious air fryer country style ribs!