Yes — aluminum foil can usually be used in an air fryer, but only if you use it correctly and your specific model allows it.

Before anything else, check your air fryer’s manual. Different brands have different rules, and some may advise against foil altogether. If it is allowed, foil can be helpful for reducing sticking, holding sauces, keeping food moist, and making cleanup easier—especially for foods like fish, chicken, or vegetables.

The most important rule is airflow. Air fryers work by circulating hot air, so if foil blocks too much of the basket, food may cook unevenly or stay soft instead of crispy. Always use small pieces of foil, keep it weighed down by food, and never let it cover the entire basket or touch the heating element. Also avoid placing loose foil inside during preheating, since it can blow around and become unsafe.

Foil is best for certain foods but not all. It works well for moist or delicate dishes, but it is not ideal for crispy foods like fries or wings, which need full airflow. You should also avoid using foil with acidic ingredients like tomatoes or citrus, which can react with aluminum. If you want safer alternatives, parchment liners, silicone inserts, or air fryer-safe pans are often better options for everyday cooking.