Hello & welcome to FlyerTalk!

This forum is primarily for people that are trying to earn miles & not really cash them out. I'm going to go ahead & move this to the MilesBuzz forum where you may get some better assistance. Normally, we'd move it to the general airline forums, but since you're dealing with both AA & UA Miles, it won't fit into just one forum.

As for your options - I'm not 100% certain what the routings are, but I know you can get to BKK in Biz for 90K miles using UA miles & I'm sure you could route through HKG on the way to BKK. Depending on how much a One World Award trip would be, you could probably use the 200K AA miles for a Biz trip on AA/CX to BKK & do a stop over in HKG for free.

Good luck!

bhatnasx
Mileage Run Moderator