Originally Posted by
CAPT Tee
I believe the discount is only for same day return using Octopus Card. $33 on the outbound and $16.50 on the "Same Day" return.
http://www.hongkong.net/transportati...irport/bus/a21 states that the prepaid return ticket is available that is good for 90 days.
It only save a couple of US dollars, though.