Vietnam Airlines is still examining possible orders for regional jets and Airbus A320neo aircraft.
The airline's chief executive Pham Ngoc Minh told Flightglobal Pro last year that it was studying the Bombardier CSeries, Mitsubishi MRJ and Sukhoi Superjet to allow it to expand its network through the Indochina region.
Antonov also briefed the carrier last year about its An-148 and An-158 regional jets as part of an Asian sales tour.
However, a spokeswoman for the airline says that it is "continuing to consider its demand for regional jets" but has not made a decision on which jet, if any, it may order.
An order for the CSeries or MRJ from Vietnam Airlines would be a major boost for the manufacturer as neither type has received an order from a carrier based in Southeast Asia.
The spokeswoman also says that the airline has "no fixed plan yet" to order the A320neo aircraft to replace its fleet of A320s and A321s.
Flightglobal Pro data shows that the carrier operates five A320s and 39 A321s, and has 15 A321s on order.