If you find yourself identifying with those dames in movies set in the 19th century who always travel with a stagecoach full of steamer trunks, you won’t like US Airways new policy. Starting May 5, US Airways will levy a $25 fee against passengers checking a second bag. United Airlines announced the same thing earlier this month, and is also starting the fee on May 5. We can expect to see more and more of these fees as airlines struggle to make money, making it even harder to comparison shop for tickets. As Upgrade: Travel Better notes, no airfare search engine is equipped to take add-on fees into account (hello, market opportunity somebody?). Inside, the email US Airways sent out to its passengers.