Adani Group, a commodity trading business, agreed to invest in Flipkart-backed Cleartrip, a global online travel company. Financial terms were not disclosed. Buying into Cleartrip could boost the port-to-power conglomerate’s plans to roll out a superapp as well its airport management business. The rapidly diversifying Adani Group has emerged as the country’s largest airport operator and said the number of passengers is nearing pre-pandemic highs.