50K will get you one way on CX to SE Asia in J using AS miles... since it sounds like you're a mileage accumulator via CC bonus, pair it up with a different redemption coming home, and you're good.
Airline mile programs are roach motels, with very rare exceptions (that usually are terrible ideas). Miles go in but never come out to a different program. They're not like changing pesos into Thai baht and being completely interchangeable currency with an exchange rate.
Last edited by eponymous_coward; Jul 10, 2019 at 12:36 pm