I just keep monitoring the airline sites. I think I booked Jan 16th last year when I saw the price was that low. I said ~200, but I think it was in reality $230. I looked later in the year (April), and the flights were closer to $450 roundtrip. Like I said - all depends on your airline, competition, and any other sales that went on. I think Southwest started going to MKE, so that kind of kicked AA into gear lowering prices.