Health officials reported three new Covid-19 infections on Saturday, all of which are imported from Indonesia.
The three cases involve foreign domestic helpers who arrived on the same flight on Friday, and tested positive on arrival.
Two were found to carry a mutant strain of the virus.
The infections prompted authorities to ban Cathay Pacific flights from Jakarta from landing in Hong Kong from Saturday to June 25.
Officials also reported fewer than five preliminary positive cases.
So far, Hong Kong has recorded 11,877 Covid-19 infections, with 210 deaths.