In early time, the service will be available on four Airbus A350 jets, coded from VN-A886 to VN-A889.
Passengers can identify the aircrafts offering Wi-Fi because an icon will be shown at the boarding gate.
When passengers are on board, they will also be told about the service by the cabin crew.
Wi-Fi access will be available when the planes reach a safe altitude and it will be disconnected as the aircrafts start landing.
Anyone who wants to use Wi-Fi on board can pay the service by credit card or voucher.
Vietnam Airlines has yet to decide on pricing for the in-flight wireless Internet service, but costs are expected to range somewhere between US$8 and $10 during a flight.