According to the government's monthly traffic data, IndiGo cornered 38.7 per cent of the market share, a slight drop from its 40 per cent share last month. The budget airline carried 36.99 lakh passengers.
It was followed by SpiceJet (14.2 per cent), Jet Airways (15.8 per cent) and Air India (13.5 per cent)- all the airlines registering an increase in their market shares.
In terms of passenger load factor or seat utilisation, SpiceJet retained the top spot with 94.4 seat occupancy followed by Air Asia (88.4 per cent), Vistara (84.6 per cent) and IndiGo (83.7 per cent), it said.
"This is the 28th month in a row that SpiceJet has flown with load factors in excess of 90 per cent, a feat unparallelled in global aviation history," SpiceJet said in a statement.
Over 14,000 travellers were affected due to cancellation of flights and more than 1,300 denied boarding, it said, adding airlines spent a total of Rs 4.25 crores on compensation and providing alternative facilities to affected passengers.