Buried in the press release of the LAX-SIN announcement UA announced that it will be canceling SIN-HKG which is their last fifth freedom flight
With the launch of new nonstop service between SIN and LAX on Oct. 29, the airline will terminate service from Hong Kong (HKG) to SIN on Oct. 27, and from SIN to HKG on Oct. 28. United will continue to operate daily service between SIN and SFO.