•Book by August 1, 2011 11:59, from your city of departure. 9 l& Y$ v% @+ I3 u& z. C2 L•Valid for travel between July 27 and October 31, 2011 5 g7 B: |' P G' T. R% p$ k6 Z具体内容自己看吧( V9 Z" r" I2 `1 n; q http://www.aircanada.com/en/offe ... t/asiadiscount.html