Jakarta. State-owned airport operator Angkasa Pura II launched the inter-terminal sky train, known as Kalayang, at Soekarno-Hatta International Airport on Tuesday (26/12).

The sky train will be operating 20 hours a day, from 4 a.m. to midnight, in line with the airport's operational hours.

Angkasa Pura II president director Muhammad Awaluddin said the sky train reflects the company's efforts in providing comfort to passengers and innovating the airport's services.

"We hope that with this new facility Soekarno-Hatta International Airport will become one of the best airports in the world and will be among the best airports on [airline ranking site] Skytrax," he said.

The train is now available at Terminal 1, Terminal 2 and Terminal 3.

"We plan to connect the sky train to Terminal 4 in the future, and to the sky hub commercial area," Awaluddin said.

A rail link to the airport from Sudirman Baru Station in Central Jakarta will also open on Tuesday. Tickets will be sold at a discounted price of Rp. 30,000 ($ 2.21). On Jan. 2 the fare will increase to Rp. 70,000.

The airport train will stop at the Duri and Batu Ceper stations before reaching the airport. Soon the link will be extended to Manggarai Station in South Jakarta.