Cancelling a Ticket Reservation or Purchase within 24 hours of Booking. For airline tickets that are purchased at least seven days before a flight's scheduled departure date and time, airlines are required to either: allow consumers to cancel their reservation and receive a full refund without a penalty for 24 hours, …
How many hours before I can cancel my flight ticket?
If the booking was made between 10 and 26 hours, it should be cancelled 8 hours prior to the flight departure time to avail your flight ticket cancellation refund. If the booking was made between 26 hours and 91 days, it should be cancelled 24 hours prior to the flight departure time.
Can I cancel my ticket before 3 hours?
No refund of fare shall be admissible on the tickets having confirmed reservation in case the ticket is not cancelled or TDR not filed online upto four hours before the scheduled departure of the train.