Originally Posted by dkerr

With AS miles on CX the number of miles is the same for all Asia, so yes SGN is the same number of miles as HKG from the USA providing you ticket as a single ticket (stopover in HKG allowed). Given that you said in an earlier post that you have flexibility on final destination if I were you I would get all my ducks in a row now (ie, get the miles into your AS account) and then monitor for availability on the JFK-HKG segment and as soon as something shows up for a date that works book it and take whatever final destination is available (e.g. SGN, SIN, BKK, whatever takes your fancy.
You have 24 hours to make a change at no charge, after that AS will charge you $125.

As you will likely be doing this as two separate one-way tickets (because the return flight may not be available at the time you secure your outbound) I would book as J on the way out so you have sufficient miles for F on the way home... as I have seen many cases where CX has F award available on a flight close in to flight time but does not have J available.

btw... you can only use JAL web site up to about 4 days before departure. After that use QF... it is not as accurate as JL when it comes to availability for AS (or AA) redemptions, but it is the best you have when it comes really close to flight time.

Good luck.
DAK