With United Airlines set to resume San Francisco – Hong Kong flights in March, business class saver award availability is wide open. You can book use the space to connect onward in Asia on airlines like Singapore and Thai.
As of this writing at least two business class award seats are available for every day except one March 24, 2023 – October 28, 2023. On most dates there are at least 9 saver awards in business class on the route.