International Airlines Group (IAG) is a multinational airline holding company formed in 2011 through the merger of British Airways and Iberia. Headquartered in London, IAG operates several well-known airlines, including Aer Lingus, Vueling, and British Airways, serving a wide range of domestic and international routes. IAG is one of the largest airline groups in the world, focusing on providing quality service and competitive pricing. The company is listed on the London Stock Exchange and is a member of the FTSE 100 Index, reflecting its significant presence in the global aviation market.