Place all ingredients except the skirt steak into a blender and mix until you get a smooth sauce.
Cut the skirt steak into four pieces and place into a zip-top plastic bag.
Pour the marinade on the steak and let the meat marinate for 30 minutes, or for up to 24 hours in the refrigerator.
Set your air fryer to 400F and place the steaks into the air fryer basket. Depending on the size of your air fryer you may have to do this in two batches.
Cook for 8 minutes, or until your steak has reached an internal temperature of 145F. It is critical to not overcook skirt steak, so as to not toughen the meat.
Let the steak rest for 10 minutes. Don’t rush this stage.
Slice the steak against the grain (this part is important) and serve.