"CEO of Birmingham Airport Paul Kehoe and Head of Airline Marketing and Route Development of Delhi International Airport Limited (DIAL) Kiran Jain signed the MoU at the World Routes conference in Las Vegas," a DIAL statement said.
The Memorandum of Understanding signifies a formal commitment by both parties to work collaboratively in order to strengthen trade and tourism links between the two cities, it said.
With 36 million passengers and over half a million ton of cargo passing through IGI annually, the Delhi airport aims at becoming the leading hub of South Asia.
"The objective of entering into a Sister Airport Agreement is to build mutually cooperative and rewarding relationships among progressive airports. We see it as a stepping stone for development of IGI Airport as an international air transport hub. It also helps expand air transport networks worldwide and will bring us sustained success," DIAL CEO I Prabhakara Rao said.
Located in the heart of the UK, Birmingham Airport handles more than nine million passengers a year and is the third largest airport outside of London.