Port of entry

It typically has border security staff and facilities to check passports and visas and to inspect luggage to assure that contraband is not imported.

Similar cases of transitions of international airports such as Seoul, Tokyo, Nagoya, Shanghai, Hong Kong, Bangkok, Tehran, etc.

For the European Union, flights between countries in the Schengen Area are considered domestic regarding passport and immigration check.

One of the most famous cases was that of Mehran Karimi Nasseri, an Iranian national who lived in the Charles de Gaulle Airport in France for approximately eighteen years after being denied entry into France and not having a country of origin to be returned to due to claiming his Iranian nationality had been revoked.

According to the Code of Federal Regulations, "the terms 'port' and 'port of entry' incorporate the geographical area under the jurisdiction of a port director.

On some international borders, the concept of a port of entry does not exist or is at least not applied to select countries of free-crossing pacts.