It said a feasibility study is expected to be completed this year and a tender for design and execution works will be launched afterwards.
The company expects works to take 18 months but said the duration may change depending on the results of the feasibility study.
A tender for the train station-airport railway line was launched in September 2016 but it received no bids and the tender was canceled. The project is estimated to cost nearly EUR100 million plus VAT.