I bought a round trip ticket with US Airways just for them to have me walk across the airport to American Airlines & then for American Airlines to send me back to US Airways desk just for check in. The run arounds literally cost me time & I missed my flight because surely I could not get thru security as fast. They refused to refund my ticket or even put me on the next flight. Instead they offered me a standby option and told me I could be waiting at the airport literally all day because every flight was over booked. In the past I have had run in's with American & was very disappointed to hear American and U.S. Airways have been co joined. I ended up buying an entire new round trip ticket thru Delta to avoid the frustration all together. Please don't expect any type of accommodation or even empathy from the customer service representatives. Customer service is the least of their worry. If your able to do yourself the favor of booking with a reputable airliner such as Delta etc. Save yourself the time, worry & piece of mind.