India, Sept. 18 -- IndiGo has revised charges for several domestic flight passenger services, making some optional and travel-related services more expensive. The changes cover infant travel, excess baggage, unaccompanied minors, priority check-in and boarding, and travel certificates. The airline's latest fee revision will increase the additional cost for passengers using these services, while basic airfare may remain unchanged.

The fee for infants travelling with an accompanying adult has been increased to Rupees 3,000 from Rupees 2,000. The charge applies to infants aged more than three days and up to two years. Under IndiGo's rules, infants cannot occupy a separate seat and must travel on the lap of an accompanying adult. Only one in...