How much would a plane ticket cost for northern California to the Chicago area?

I want to visit my friend in Chicago and I live in northern California. Generally how much would a plane ticket cost from here to there?|||it depends which airline and from which airport your coming from and going to m


flights to Midway are a bit cheaper


also it depends when you want to fly off peak hours are a bit cheaper


my guess would be about $500 round trip wouild be a good deal|||coach? first class? what airport? what airline? what time of day?