New Delhi/Mumbai, Feb. 26 -- Air travellers in India will soon get a 48-hour window to cancel flight tickets without paying cancellation charges, in one of the most passenger-friendly changes introduced by the aviation regulator in recent years.

Under revised passenger service rules issued by the Directorate General of Civil Aviation (DGCA), airlines will have to provide a "cooling-off" or look-in period, during which passengers can cancel bookings and receive a full refund. However, this option will not be available if the flight is scheduled to depart within seven days for domestic travel or 15 days for international travel from the date of booking.

The move aims to help travellers who have made errors in dates or names or need to cha...