Crowds at Indian airports eased on Saturday but hundreds of passengers were still gathering outside Bengaluru and Mumbai airports as 385 IndiGo flights were canceled, in the fifth day of a crisis that has hit the country’s biggest airline.

Congress MP Rajeev Shukla on Saturday raised concerns over the large-scale cancellation of IndiGo flights, stating that thousands of passengers have been left stranded at airports and alleging that th...