Preheat the air fryer to 375°F for 3 minutes if recommended. Lightly oil the basket.
Combine onion, mayonnaise, Worcestershire, Dijon, spices, salt and pepper in a medium bowl.
Fold in the cold ground turkey only until the seasonings are evenly distributed.
Shape four equal patties 1/2 to 3/4 inch thick. Make a shallow center indentation and lightly oil both sides.
Arrange the patties in one uncrowded layer and cook at 375°F for 6 minutes.
Turn and cook for 5 to 7 minutes longer, removing each burger when its center reaches at least 165°F.
Rest for 3 minutes, then assemble on buns with desired toppings.