I usually fly AA only, but am moving to PHL soon so will likely be flying a lot on US Airways. Myself and a friend are looking to go PHL-YUL roundtrip on Sep 27 outbound with Sep 29 return. So far, lowest fare I can find is $199 RT (including taxes) per person, available at US Airways website and Expedia. Are there any better deals? Is there any way to get the second ticket cheaper? Any advice is appreciated. Thanks.