Preheat the air fryer to 400°F.
Cut a few slits into each hot dog. Do not cut too deep.
Transfer the hot dogs into the air fryer basket in an even layer.
Air fry for 4-6 minutes, or until it is cooked to your liking.
Place each of the air fried hot dogs between buns and return them to the air fryer basket. Depending on the size of your air fryer, you may need to do two batches.
Lightly brush the tops of the buns with a little melted butter or oil, if desired.
Air fry for 1-2 more minutes to get the buns warm and toasty.
Transfer to a serving platter and add your favorite toppings. Enjoy!