Rinse the asparagus under cool water, then trim the ends of the asparagus just where it turns from white to green.
Place the asparagus in the air fryer basket and drizzle with olive oil.
Place the basket in the air fryer and set it to 400°F. Cook the asparagus for 5-6 minutes or until it is your desired level of doneness.
Remove the asparagus from the air fryer and sprinkle with salt or other seasonings and a drizzle of lemon juice, if desired.
If your asparagus is thinner or thicker you will need to adjust the cooking time.For very thin asparagus start at 3 minutes, and then check for doneness. Add more time in 1-minute intervals if it is not cooked enough.