Preheat your air fryer to 350 degres F (180°C).

Place the slices of sourdough bread in a single layer in the air fryer basket, ensuring they are not overcrowded.

Air fry for 2-3 minutes, flipping the slices halfway through the reheating process. Keep a close eye on them to prevent overcooking.

Check for the desired level of warmth and crispiness. If needed, you can add another minute or two of air frying.

Carefully remove the reheated sourdough slices from the air fryer basket and serve immediately.