The Sadar Bazaar Cantonment metro station is located on the Magenta Line of the Delhi Metro. It was opened to public on 29 May 2018.

The Magenta Line is a metro rail line of the Delhi Metro, a rapid transit system in Delhi, India and the first driverless metro in India.The line is laid on most of the parts of South Delhi and is mostly underground.The total length of the line is 37.46 kilometers (23.28 mi) and it consists of 25 metro stations from Janakpuri West to Botanical Garden, out of which 10 are elevated and the rest are underground. Unlike the Airport Metro Express, this line directly serves Terminal 1 of the Indira Gandhi International Airport.