In May 2021, with lockdowns in full effect, air traffic fell by 72% against March levels when the country was open. During this time, domestic airlines' capacity utilization suffered. Airlines' passenger load factor (the passenger load factor measures the capacity utilization of an airline based on the passengers it carries) was 52.7% in May against nearly 70% two months prior. 

As lockdowns eased in June, airlines' passenger load factor improved. InterGlobe Aviation, the operator of IndiGo Airlines, recorded an 11.5 percentage points growth in passenger load factor in June. SpiceJet's passenger load factor improved to 71% in June (from 65% in May), the highest passenger load factor among domestic airlines.