Trim steaks if desired and cut into bite-sized pieces.
Place the steak pieces in a large bowl and add the Lipton onion soup mix, sliced mushrooms, Worcestershire sauce, and olive oil.
Toss everything until the steak and mushrooms are evenly coated with the seasoning and oil.
Arrange the steak and mushroom mixture in a single layer in the air fryer basket; cook in batches if necessary to avoid overcrowding.
Air fry at 400°F (204°C) for 8 to 10 minutes for medium-rare to medium, shaking the basket or stirring once halfway through; add 2 minutes for medium-well.
Remove from the air fryer, let rest briefly, then serve.