Preheat oven to 350 degrees F. Place 3 cups of the tortilla chips in a greased 3-quart rectangular baking dish. In a large bowl combine turkey, salsa, corn, sour cream, and flour; spoon over tortilla chips.
Bake, uncovered, for 25 minutes. Sprinkle with the remaining 2 cups tortilla chips and the cheese. Bake for 5 to 10 minutes more or until heated through.