Sri Lanka's The Sunday Times newspaper quoted Parimalan Micheal, a Malaysian national who chairs Airport Express Air and Rail Company Pvt. Ltd, the project firm, as saying that a feasibility study has been awarded to KPMG India.
The firm plans to raise equity from international investors.
The service plans to charge 500 a fee of 500 rupees from locals and 50 dollars from foreigners the report said.
In most other countries airport rail links do not discriminate against foreigners. At current prices a taxi ride from the city to the airport costs less than 50 dollars.
Trains would travel along the 30 kilometre track at 100 miles per hour taking 25 minutes to reach the capital.
The track has been planned to be laid partly along a new expressway being built to the airport, join an existing railway on a parallel track at a station in Hunupitiya and terminate