Preheat your air fryer to 375°F (190°C) for about 5 minutes.
Place the frozen onion rings in the air fryer basket in a single layer, making sure they are not overlapping or crowded. Depending on the size of your air fryer, you may need to cook the onion rings in batches to ensure they cook evenly.
Cook the onion rings at 375°F for 8-10 minutes.
Once cooked, remove the onion rings from the air fryer and serve immediately with your favorite dipping sauce. Enjoy!