Farecast, a company that looks to predict flight pricing (on history, market conditions, what else..?), has expanded to over 55 cities in the US. If you live in a major city in the US, and you're interested in the forecast for whether airline ticket prices are expected to go up or down, take a look at Farecast. Remember that it's in the early stages, and can probably only be taken lightly at this point.
technorati tags:farecast, airline, flight, prediction, costs