Begin by whisking together the olive oil, melted butter, minced garlic, lemon juice, chopped dill, salt, and pepper in a mixing bowl.
Add the scallops to the bowl with the marinade, ensuring they are fully coated. Let them marinate for about 15 minutes.
While the scallops are marinating, preheat your air fryer to 400°F (200°C).
Once preheated, lightly grease the air fryer basket with olive oil. Place the marinated scallops in a single layer in the basket, making sure they are not overcrowded. Cook for about 8-10 minutes, flipping them halfway through.
Carefully remove the scallops from the air fryer using tongs and transfer them to a serving platter. Garnish with additional fresh dill and lemon wedges if desired.