Pat the salmon fillets dry using paper towels.
Season both sides with salt and black pepper.
Arrange the fillets in a single layer inside the air fryer basket, leaving space between each piece.
Cook the Air Fryer Salmon at 400°F (200°C) for 8–10 minutes, or until the fish is opaque and flakes easily with a fork. For thicker fillets, cook an additional 2–3 minutes if needed.
Carefully remove the salmon from the basket and set aside.
Meanwhile, melt the butter in a small saucepan over medium heat.
Add the minced garlic and cook for about 1 minute until fragrant.
Stir in the fresh lemon juice and remove from the heat.
Spoon the garlic butter lemon sauce generously over the salmon before serving.