There has been heightened security worldwide ever since the terrorist attacks on the US using the airplanes. As a result of these enhanced security measures, the international travelers are subjected to extensive security checks before boarding the international flights. The international travelers are required to follow certain set guidelines and procedures so that they do not get into trouble at the airport.
The first important thing is to check for the rules and procedures that are laid down by the airlines. These can be known from their website or information brochures. These rules essentially pertain to the items that are allowed or not allowed to be carried aboard the airplane. Further, there are variations in these rules from one country to the other. Therefore, it is the airlines which provide the correct and the most updated information on the rules and procedures to be followed while boarding the international flights to a particular destination. Additionally, you can even check out the website of the destination country's authorities which can provide this information. The items that now stand banned mostly relate to all those items which can be used as a potential weapon for creating panic or hurting any person or even damaging the aircraft. So, even the knives, toy guns, box cutters and other items of common usage are banned from carrying in the airplane. If you still carry these items, there are chances that the same might be confiscated.
Another important aspect is that due to increase in the security checks, the passengers are required to come for check-in a few hours before the flight time which is mentioned in the international air ticket. There is no easy passing through the security levels anymore. So, you need to come well in time to allow for the security checks and be patient during the whole exercise.