I wouldn't say fries themselves are very healthy, but using an air fryer is the healthiest way to make them. By eliminating the oil and using an airy fryer instead, you get the same flavor of deep-fried French fries without all of that added fat. You can limit the calories without sacrificing flavor. You can also bake your fries in the oven, but they just don't get as crispy as they do in an air fryer.