Mumbai, July 17 -- Some mistakes are irreversible. However, if you entered the wrong details in your flight ticket or had a change of plans, there's no reason to worry. You can cancel or amend your ticket for free, as long as you do it within 24 hours of booking, and given the flight is at least seven days away.

"You can cancel or amend the ticket without any additional charges, within 24 hours of booking. This facility is available up to seven days prior to the specified flight departure on the first leg," says the ministry of aviation's Passenger Charter of Rights.

For instance, if you book a flight on 14 July at 9am but have a change of plan the next morning, then there is no charge for cancellation or rescheduling it if the flight i...