"It will take at least two or three months to prepare to invite investors," said Kyaw Soe, director of the Department of Civil Aviation's (DCA) Aerodrome Standard and Safety Division.
The DCA said the airports will be handed over to the winning firms either as 100% privately owned investments or joint ventures, or as build-and-operate projects, depending on the potential of each project.
Myanmar last year called for proposals for upgrading the 30 domestic airports, attracting submissions from nearly 50 companies, most of them local.
The country has a total of 69 airports.
Myanmar's aviation industry is expected to grow rapidly in the coming years as tourism increases.
The number of tourists visiting Myanmar are projected to rise dramatically from 4.2 million last year to 30 million in 2030, according to the government's tourism masterplan.