HONG KONG—Asian financial centers Singapore and Hong Kong delayed for two weeks plans to allow quarantine-free air travel between the cities, showing the difficulty of establishing such potential travel arrangements as waves of the pandemic continue.
The travel bubble was originally due to begin Sunday. But Hong Kong has reported dozens of new cases in recent days after a period in which transmission of the virus had slowed, prompting new restrictions on social gatherings. The travel bubble will be revisited in early December,…