The Institute of Medicine released two seminal reports in 1999 and 2001.The first report, To Err is Human: Building a Safer Health System released in 1999 received enormous publicity and focused attention on the issues of medical error and patient safety.
The general rule of thumb is that one is supposed to arrive. 1  2 hours early for a domestic flight and. 2  3 for an international flight.
Check-in is available from 1 to 30 hours prior to scheduled departure of domestic flights. For international flights, the service is available from 4 to 24 hours prior to departure. Check-in online and print your boarding pass or obtain a voucher to be exchanged for your boarding pass at the airport.