"Due to beginning of the lean season -- June to September -- some flights have been clubbed, combined, rescheduled, curtailed depending upon commercial or business decisions, and this number is very small - 25 only," an Air India spokesperson said here.
Despite the curtailment or clubbing of flights, "we have ensured that our connectivity to all destinations is maintained", he said.
Air India operates over 400 flights per day on domestic and international routes, while its subsidiary Air India Express, which flies mostly to Gulf countries, operates 189 flights per week.
The lean season closely follows the peak summer vacation time and continues from mid-June till September.
The spokesperson said that rejigging, combining or clubbing, rescheduling of flights was a common annual business practice and was not associated with the recent aviation turbine fuel row with the state-owned oil companies.
The Indian Oil Corporation, Hindustan Petrolum Corporation Limited and Bharat Petroleum Corporation Limited have restricted ATF supply to Air India upto the amount which it would pay on a daily basis.
According to latest figures, Air India owes a total of Rs 2,250 crore to the three oil PSUs. The airline's daily fuel bill was Rs 13.5 lakh in December when the oil firms stopped the credit line which has now risen to Rs 16.5 lakh.