In a mixing bowl, toss the shredded cheddar cheese with flour until evenly coated.
In an air fryer-safe baking dish (6-7 inch), combine the cream cheese cubes, beer, Dijon mustard, Worcestershire sauce, garlic powder, cayenne pepper, and salt.
Preheat air fryer to 320°F.
Place the dish in the air fryer and cook for 5 minutes, then carefully remove and stir well.
Add the flour-coated cheddar cheese to the dish and stir to combine.
Return to air fryer and cook for an additional 8-10 minutes, stirring every 3 minutes, until cheese is completely melted and smooth.
Let the dip cool for 2-3 minutes to thicken slightly, then serve warm with soft pretzels, tortilla chips, or fresh vegetables.