The number of passengers carried by domestic airlines during the first six months of the current year (January-June 2017) rose 18.03 per cent to 56.16 million from about 47.58 million during the corresponding period of the previous year.
The passenger load factor in June 2017, however, showed a declining trend compared with the previous month primarily due to the end of tourist season, data released by aviation regulator Directorate General of Civil Aviation (DGCA) showed.
Passengers carried by all domestic carriers dropped with IndiGo recording the highest decline of 3.65 lakh lesser passengers in June as compared with May.
''The passenger load factor in the month of June 2017 has shown declining trend compared to previous month primarily due to the end of tourist season,'' DGCA report said.
Air passenger traffic had fallen in February to 8.66 million from 9.58 million in January this year, after which it consistently improved.
Airlines operated with majority empty seats as passenger load factor (PLF) were lower for almost all airlines during the month as against May 2017.
SpiceJet recorded the highest PLF in June 2017 of 94.5 per cent as against 94.3 per cent the previous month while AirAsia reported a PLF of 89.6 per cent.
The market share of all domestic carriers dropped during the month with the exception of SpiceJet, Air India, AirAsia and Vistara that improved market share in June minimally.
Market leader IndiGo's share fell from 41.2 per cent in May to 40 per cent in June.
IndiGo's cancellation flight rate also shot up during the month from 0.14 per cent the previous month to 3.34 per cent in June.
At the end of June, Air India's market share stood at 13.1 per cent, Jet Airways was at 15.2 per cent, SpiceJet was at 13.3 per cent, GoAir at 8.4 per cent, while AirAsia and Vistara had 3.7 per cent and 3.6 market share, respectively.
The overall cancellation rate of scheduled domestic airlines during June 2017 stood at 1.68 per cent.
During June 2017, the DGCA said, scheduled domestic airlines received a total of 631 passenger related complaints during the month. The number of complaints per 10,000 passengers carried for June 2017 has been around 0.66.
DGCA noted that an analysis of the airport-wise data on timely performance of scheduled domestic airlines complying with route dispersal guidelines showed that the reasons for delay in a majority of cases have been attributed to 'reactionary'.