International airport

An international airport is an airport that offers customs and immigration facilities for passengers travelling between countries. International airports are typically larger than domestic airports and often feature longer runways and facilities to accommodate the heavier aircraft commonly used for international and intercontinental travel. International airports often also host domestic flights. Some, such as Frankfurt Airport in Germany are very large; others such as Fa'a'ā International Airport in Tahiti, are quite small.

Buildings, operations and management have become increasingly sophisticated since the mid 20th century, when international airports began to provide infrastructure for international civilian flights. Detailed technical standards have been developed to ensure safety and common coding systems implemented to provide global consistency. The physical structures that serve millions of individual passengers and flights are among the most complex and interconnected in the world. By the second decade of the 21st century, there were over 1,200 international airports and almost two billion international passengers along with 50 million metric tonnes of cargo were passing through them annually.

Cochin International Airport

Cochin International Airport (IATA: COK, ICAO: VOCI) is an international airport situated in the city of Kochi, in the state of Kerala, India. Located at Nedumbassery, about 30 km (19 mi) northeast of Kochi, it is the busiest and largest airport in the state of Kerala. For the financial year 2014-15, Cochin airport is the fourth busiest airport in India in terms of international passenger traffic after Delhi, Mumbai and Chennai ferrying over 3,751,225 passengers and seventh busiest airport in India carrying 6,814,867 passengers. The airport is a primary base for Air India Express operations and is a focus city for Air Asia India, Air India, Indigo, Jet Airways and SpiceJet.

Cochin International Airport is the first in India developed under a public-private partnership (PPP) model and was funded by nearly 10,000 non-resident Indians from 30 countries.

On August 18 2015, it became the world's first fully solar energy powered airport with the inauguration of the dedicated solar plant.