In a bowl, whisk honey, soy sauce, and garlic (powder or fresh). Reserve half of the mixture for drizzling later. Use the rest to coat both sides of your salmon fillets, then let them sit in the fridge for about 30 minutes so the flavors penetrate.
Preheat your air fryer to 400 °F (≈ 200 °C). Place the marinated salmon fillets skin-side down (if they have skin), then spoon or brush some of the reserved sauce over the tops just before cooking begins.
Cook the salmon for about 7–8 minutes, depending on thickness. When it’s done, the salmon should no longer be translucent and should flake easily with a fork. Remove it carefully and drizzle over any remaining sauce before serving.