Place the french fries in the air fryer basket in a single layer. A bit of overlap is ok, but you don't want to fill the basket to the top.
Place the basket in the air fryer, set it to 380°F and cook the fries for 15-17 minutes or until crisp. Shake the basket at the halfway mark. The time will vary depending on the thickness of the fries and the brand.
Once the fries are the desired crispness, remove them from the basket, season, and serve.