I have searched the forum and saw people talk about buying "Y" (full fair economy) tickets. I checked UA, the lowest unrestricted fare, which I believe is "Y", is like $3300 (international flight from US to Asia). I didn't find it on AA website. I just want to make sure that it is really fully refundable. Has anyone bought such tickets before? Is there any hidden charge or fee? Any way to buy fully refundable tickets at a lower price? Thanks!