IndiGo forged partnerships with Delta Air Lines, Virgin Atlantic and Air France-KLM to increase and improve connectivity to Europe and North America. The memorandum of understanding (MoU) signed between the airlines on Monday aims to further support IndiGo’s global expansion spree, the Mint reported. The development comes at a time when India’s largest airline by market share has added direct flights to 10 international destinations, including Manchester, London and Amsterdam, to fuel its global expansion.