They are Flight EK394 from Dubai to Hanoi on March 12, and Flight QR976 from Doha to Hanoi on March 17.
The ministry called on all passengers on the flights to contact disease control centres of cities and provinces for guidance on health monitoring.
Airline ticket agents are responsible for notifying the passengers who bought tickets for those flights.
Vietnam confirmed nine more cases positive for SARS-CoV-2 on March 19 night, bringing the total COVID-19 cases in the country to 85, including 16 fully recovered.
VNA/VNP
