The world airport ranks 2022.

Chicago O 'Hare International Airport is the largest airport in the world, the only dual hub airport in the world, and the headquarters of United Airlines, 27 kilometers away from Chicago.

In various lists, China's civil aviation industry has performed well. It is particularly noteworthy that in 2022, Shenzhen Baoan International Airport won the championship, and Shenzhen Baoan International Airport also won the first place among the top ten most popular airports in China.

Terminal building:

The terminal building, also known as the terminal building, is one of the main parts of the airport for passengers to complete the conversion from ground to air or from air to ground. There are check-in counters, waiting halls, entry-exit halls and customs quarantine facilities. There are also public transport interchange stations leading to the city.

Airports of international flights generally have customs and entry and exit facilities, but some countries have agreements with each other, and passengers traveling by air do not need to go through customs and immigration inspection, so these facilities are not necessary for international airports. International flights often require high safety and quality of hardware facilities, and many countries adopt the same safety level for international and domestic airports.