In a bowl, combine shredded chicken, sour cream, taco seasoning, and cheddar cheese. Stir to combine.
Warm the tortillas slightly (microwave for 20-30 seconds or briefly on a dry skillet) to make them pliable.
Spoon about 2-3 tablespoons of the chicken mixture onto the center of each tortilla.
Tightly roll up each tortilla, tucking in the sides if possible, to form a flauta shape. Secure with a toothpick if needed.
Lightly spray the flautas all over with cooking oil. Arrange them in a single layer in your air fryer basket.
Air fry at 375°F (190°C) for 8-12 minutes, flipping halfway through, until golden brown and crispy.
Serve immediately with your favorite toppings like guacamole, salsa, shredded lettuce, sour cream, and lime wedges.