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.
International vs. Domestic Flights. Generally speaking, you must arrive at the airport one hour in advance of domestic flights and two hours in advance of international flights. What you should keep in mind, however, is that unless the international portion of your travel is nonstop from your origin city, you need only follow domestic flight guidelines.