Vietnamese airlines are now permitted to resume regular flights to China as in the pre-Covid-19 period, according to the Civil Aviation Authority of Vietnam (CAAV).
The move was made as China is about to remove restrictions on regular international flights to the country.
Carriers can restore regular flights to frequencies regulated in bilateral aviation agreements.
Limits on the number of passengers on a flight will be lifted, according to the CAAV.
It also noted that services at Chinese airports may be lacking, so airlines should work with airports in advance to ensure the stable and smooth resumption of international flights.
China is a major market of Vietnam, accounting for 32 per cent of the total number of foreign tourists entering the country via international airports in 2019.