The Delhi Airport Metro Express (DAME) is a Delhi Metro line from New Delhi Metro Station to Dwarka Sector 21, linking the Indira Gandhi International Airport. The line, also known as the Orange line was opened on 23 February 2011 after missing four previously set deadlines. It was built at a cost of 57 billion, of which Reliance Infra paid 28.85 billion (U$580m), Reliance Infra will also pay fees on a Revenue-share model