Hong Kong-Singapore air travel bubble can be launched 'when conditions are right': Ong Ye Kung Toggle share menu Advertisement Hong Kong-Singapore air travel bubble can be launched 'when conditions are right': Ong Ye Kung The launch of an air travel bubble with Hong Kong can be launched “when conditions are right”, said Minister for Transport Ong Ye Kung on Friday (Mar 5). Gwyneth Teo with more. 2 related media assets (image or videos) available. Click to see the gallery. 05 Mar 2021 11:07PM) Share this content Bookmark SINGAPORE: The launch of an air travel bubble with Hong Kong can be launched “when conditions are right”, said Minister for Transport Ong Ye Kung on Friday (Mar 5).