The Directorate General of Civil Aviation (DGCA) has reportedly told airlines that ticket cancellation fees cannot exceed base fares. Every other charge collected apart from the base fare should be refunded to the customer since airfares have components like service tax and other airport charges in them, a senior aviation ministry official said. Any booking site charges will also need to be included within the new limit. The DGCA has already held discussions with airlines on the new rules, which will be announced soon, he said. This move comes into action after air fares skyrocketed during the Chennai floods last year and the Jat agitation in Haryana in February for which the government stepped in to cap ticket prices.