International airport

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San Francisco International Airport at night, with departure gates radiating out from the terminal building, aerobridges, apron, and parked planes San Francisco International Airport at night.jpg
San Francisco International Airport at night, with departure gates radiating out from the terminal building, aerobridges, apron, and parked planes

An international airport is an airport with customs and border control facilities enabling passengers to travel between countries. International airports are usually 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, which often help feed both passengers and cargo into international ones (and vice-versa).


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[ citation needed ] airports and almost two billion[ citation needed ] international passengers along with 50 million[ citation needed ] metric tonnes of cargo passing through them annually.


Qantas Empire Airways International flying boat services arriving at Rose Bay, Sydney (c.1939) Flying boats at Rose Bay.jpg
Qantas Empire Airways International flying boat services arriving at Rose Bay, Sydney (c.1939)

In August 1919, Hounslow Heath Aerodrome, in London, England, was the first airport to operate scheduled international commercial services. It was closed and supplanted by Croydon Airport in March 1920. [1] [2] In the United States, Douglas Municipal Airport in Arizona became the first international airport of the Americas in 1928. [3]

The precursors to international airports were airfields or aerodromes. In the early days of international flights, there was limited infrastructure, "although if engine problems arose there were plenty of places where aircraft could land". [4] Since four-engined land planes were unavailable for over-water operations to international destinations, flying boats became part of the solution. At the far end of the longest international route (which became the Kangaroo Route), on-water landing areas were found in places such as Surabaya and in the open sea off Kupang. In Sydney, Rose Bay, New South Wales, was chosen as the flying boat landing area. [4]

International airports sometimes serve military as well as commercial purposes and their viability is also affected by technological developments. Canton Island Airport, for example, in the Phoenix Islands (Kiribati), after serving as a military airport during World War II, was used as a refuelling stop by commercial aircraft such as Qantas which stationed ground crew there in the late 1950s. [5] The advent in the early 1960s of jet aircraft such as the Boeing 707 with the range to fly non-stop between Australia or New Zealand and Hawaii, meant that a mid-Pacific stop was no longer needed and the airport was closed to regular commercial use. Other international airports, such as Kai Tak Airport in Hong Kong, have been decommissioned and replaced when they reached capacity or technological advances rendered them inadequate. [6] [7]

Design and construction

The construction and operation of an international airport depends on a complicated set of decisions that are affected by technology, politics, economics and geography as well as both local and international law. [8] [9] [10] [11] Designing an airport even for domestic traffic or as "non-hub" has, from the beginning, required extensive co-ordination between users and interested parties – architects, engineers, managers and staff all need to be involved. [12] [13] Airports may also be regarded as emblematic of national pride and so the design may be architecturally ambitious. An example is the planned New Mexico City international airport, intended to replace an airport that has reached capacity. [14]

Airports can be towered or non-towered, depending on air traffic density and available funds. Because of high capacity and busy airspace, many international airports have air traffic control located on site.

Some international airports require construction of additional infrastructure outside of the airport, such as at the Hong Kong International Airport, which included the construction of a high-speed railway and automobile expressway to connect the airport to the urban areas of Hong Kong. Construction of the expressway included the construction of two bridges (the Tsing Ma suspension bridge and Kap Shui Mun cable bridge) and the Ma Wan viaduct on Ma Wan island to connect the bridges. Each bridge carries rail and automobile traffic. [15]

Operations and management

A flight information display system screen at Charles de Gaulle Airport's Terminal 2 showing flight arrivals Display Screen At A Paris Airport.jpg
A flight information display system screen at Charles de Gaulle Airport's Terminal 2 showing flight arrivals

International airports have commercial relationships with and provide services to airlines and passengers from around the world. Many also serve as hubs, or places where non-direct flights may land and passengers may switch planes, while others serve primarily direct point-to-point flights. This affects airport design factors, including the number and placement of terminals as well as the flow of passengers and baggage between different areas of the airport. An airport specializing in point-to-point transit can have international and domestic terminals, each in their separate building equipped with separate baggage handling facilities. In a hub airport, however, spaces and services are shared. [16]

Airport management have to take into account a wide range of factors, among which are the performance of airlines, the technical requirements of aircraft, airport-airline relationships, services for travelling customers, security and environmental impacts. [17]


Technical standards for safety and operating procedures at international airports are set by international agreements. The International Air Transport Association (IATA), formed in 1945, is the association of the airline companies. The International Civil Aviation Organization (ICAO) is a body of the United Nations succeeding earlier international committees going back to 1903. These two organizations served to create regulations over airports which the airports themselves had no authority to debate. This eventually sparked an entire subject of air travel politics. In January 1948, 19 representatives from various US commercial airports met for the first time in New York City to seek resolution to common problems they each faced, which initiated the formation of the Airport Operators Council, which later became Airports Council International – North America (ACI-NA). This group included representatives from Baltimore, Boston, Chicago, Cleveland, Dallas, Denver, Detroit, Jacksonville, Kansas City, Los Angeles, Memphis, Miami, Minneapolis-St. Paul, New York-Newark, Philadelphia, Pittsburgh, St. Louis, San Francisco and Washington. [18]

Flight logistics

International airports have extensive operations in managing flight logistics, such as air traffic control. The latter service is provided by ground-based controllers who coordinate and direct aircraft on the ground and through controlled airspace. Air traffic control also provides advisory services to aircraft in non-controlled airspace. [19]

Customs and immigration

Irish Passport inspection at Dublin Airport (2007) DublinAirport31mar2007-01.jpg
Irish Passport inspection at Dublin Airport (2007)
US and Canadian custom agents CBP International Travel Preclearance Operations in Canada (26003271678).jpg
US and Canadian custom agents

Airports with international flights have customs and immigration facilities, which allow right of entry. These change over time but are generally designated by law. [20] However, as some countries have agreements that allow connecting flights without customs and immigrations, such facilities do not define an international airport.

Security and safety

At Shannon Airport, travelers to the United States can "pre-clear" U.S. immigration (2008) Shannon1.jpg
At Shannon Airport, travelers to the United States can "pre-clear" U.S. immigration (2008)

The current trend of enhancing security at the cost of passenger and baggage handling efficiency at international airports is expected to continue in the future. [21] [22] This places financial burden on airports, risks the flow of servicing processes, and has implications for the privacy of passengers. [16] International flights often require a higher level of physical security than do domestic airports, although in recent years, many countries have adopted the same level of security for both.

Most international airports feature a "sterile lounge", an area after security checkpoints within which passengers are free to move without further security checks. This area can have services such as duty-free shops that sell goods that have been selected and screened with safety in mind, so that purchasing and bringing them on board flights poses no security risks. In addition to employees, only processed passengers with a valid ticket are allowed inside the sterile lounge. Admittance into the sterile area is done in centralized security checkpoints in contrast to e.g. individual checkpoints at each gate. This allows for more efficient processing of passengers with fewer staff, as well as makes it possible to detect both delays and security threats well ahead of boarding. [23]

To ensure the viability of airport operations, new and innovative security systems are being developed. For instance, the old security checkpoints can be replaced by a "total security area" encompassing an entire airport, coupled with automatic surveillance of passengers from the moment they enter the airport until they embark on a plane. [16]

Passengers connecting to domestic flights from an international flight generally must take their checked luggage through customs and re-check their luggage at the domestic airline counter, requiring extra time in the process. In some cases in Europe, luggage can be transferred to the final destination even if it is a domestic connection.

In some cases, travelers and the aircraft can clear customs and immigration at the departure airport. An example of this would be that some airports in Canada, Ireland, and the United Kingdom, along with several other countries, have United States border preclearance facilities. This allows flights from those airports to fly into US airports that do not have customs and immigration facilities. Luggage from such flights can also be transferred to a final destination in the U.S. through the airport of entry.

A crucial safety aspect of international airports is medical facilities and practices. In particular, controlling transmissible disease, such as SARS, is deemed important at international airports. [24] While these standards are regulated by ICAO Standards And Recommended Practices (SARPs) and WHO's International Health Regulations (IHR), local authorities have considerable say in how they are implemented. [25]


Among the most important airport services are further transportation connections, including rail networks, taxi and shuttle services at curbside pick-up areas, and public buses. [26] Large areas for automobile parking, often in co-located multi-storey car parks, are also typical to find at airports. Some airports provide shuttle services to parking garages for passengers and airport employees. [26] Due to the very large scale of international airports, some have constructed shuttle services to transport passengers between terminals. [27] Such systems operate for example, in Singapore Changi Airport and Zurich Airport.

At some U.S. international airports, such as O'Hare International Airport in Chicago, some seating and waiting areas are located away from the terminal building, with passengers being shuttled to terminals. [26] These areas may be referred to as ground transportation centers or intermodal centers. [26] Amenities at ground transportation centers typically include restrooms and seating, and may also provide ticket counters, food and beverage sales and retail goods such as magazines. [26] Some ground transportation centers have heating and air conditioning and covered boarding areas [26] (to protect passengers from the elements).

Services and amenities

Standard amenities include public restrooms, passenger waiting areas and retail stores for dining and shopping, [27] including duty-free shops. [28] Dining establishments may be consolidated in food courts. Some international airports may offer retail sales of luxury goods at duty-free stores, such as at Terminal 3 at Indira Gandhi International Airport in India. [28] This terminal has been described as having become a significant retail destination in India. [28] Wi-Fi service and access, offices for bureau de change (currency exchange) and tourism advice are common, although the availability of service varies across airports. Some international airports provide secure areas for stranded passengers to rest and sleep. The more usual service is hotels that are available on the premises.

Customer satisfaction awards

The World Airport Awards are voted by consumers in an independent global customer satisfaction survey. Singapore Changi Airport was the first-place winner in 2020. [30] Other winners include Incheon International Airport (South Korea) and Amsterdam Airport Schiphol (The Netherlands). [31]

Airport names

The front view of the King Shaka International Airport's main terminal building (2017) KSIA-Passenger-Terminal.jpg
The front view of the King Shaka International Airport's main terminal building (2017)
An aerial view of Hong Kong International Airport (2010) A bird's eye view of Hong Kong International Airport.JPG
An aerial view of Hong Kong International Airport (2010)
Loading passenger luggage at Lisbon Humberto Delgado International Airport Portugal (2012) Vueling A320, Portela Airport.jpg
Loading passenger luggage at Lisbon Humberto Delgado International Airport Portugal (2012)
Collecting offloaded passenger luggage from a baggage carousel at Suvarnabhumi International Airport Bangkok, Thailand (2007) Afbeelding 115.jpg
Collecting offloaded passenger luggage from a baggage carousel at Suvarnabhumi International Airport Bangkok, Thailand (2007)
Bangkok Suvarnabhumi Airport Suwarnabhumi Int. Airport2 09-09 - panoramio.jpg
Bangkok Suvarnabhumi Airport

Toponymy is one of the most common sources for the naming of airports. A number of areas close to them have lent their names, including villages, estates, city districts, historical areas and regions, islands and even a waterfall. Sometimes the toponym is combined with or renamed to incorporate another name from another source such as from one of the following:

A study found that 44 percent of the world's international airports are named by toponyms: named for politicians (thirty percent), aviators (seven percent), mythology and religion (three percent), public figures (two percent), people of science (two percent) and other (one percent). [32]

Airports also use an IATA-3 letter code to abbreviate the names of all the international airports.

Notable airports

By historical event

By passenger numbers


See also

Related Research Articles

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Mexico City International Airport Airport that serves Mexico City, Mexico

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Arturo Merino Benítez International Airport

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Tijuana International Airport

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Sheremetyevo International Airport International airport serving Moscow, Russia

Sheremetyevo Alexander S. Pushkin International Airport is one of four international airports that serve the city of Moscow. It is the busiest airport in Russia, as well as the fifth-busiest airport in Europe. Originally built as a military airbase, Sheremetyevo was converted into a civilian airport in 1959, and in a 2019 contest, was named after Russian poet Alexander Pushkin.

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Chhatrapati Shivaji Maharaj International Airport International airport in Mumbai, India

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Beijing Capital International Airport International airport serving Beijing

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Calgary International Airport Airport in Alberta, Canada

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El Dorado International Airport airport that serves Bogotá, Colombia

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Trivandrum International Airport International Airport serving the city of Trivandrum, India

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Cochin International Airport International airport serving Cochin, Kerala, India

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Nursultan Nazarbayev International Airport International airport in Akmola Region, Kazakhstan

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Ashgabat International Airport International airports in Turkmenistan

Ashgabat International Airport, formerly known as Saparmyrat Türkmenbaşy International Airport, is one of five international airports in Turkmenistan. It is located within the city limits of Ashgabat (Ashkhabad). The old airport, with its air traffic control tower and a 3,700-metre-long (12,000 ft) precision approach runway (12L-30R), opened in 1994 and was named after the country's first president, Saparmyrat Niyazov. The new airport terminal opened in September 2016 after being completely redesigned and rebuilt, and after the south runway was moved and lengthened to parallel the north runway.

Kurumoch International Airport

Kurumoch International Airport is the international airport of Samara, Russia, located 35 km (22 mi) north of the city. Besides Samara, the airport serves Tolyatti – the second largest city in the region. The name of the airport originated from the closest village Kurumoch 7 km (4 mi) southwest. Kurumoch was used as a hub for Samara Airlines until the airline's bankruptcy. In 2011, Kurumoch was acquired by the largest airport holding and management company in Russia, Airports of Regions.

The United States has an extensive air transportation network. In 2013, there were 86 airports in the U.S. that annually handled over 1,000,000 passengers each and eight of the world's thirty busiest airports by passenger volume in 2020 were in the U.S., including the world's second busiest, Hartsfield-Jackson Atlanta International Airport. In 2012, 88% of all traffic was through the 62 busiest airports in the country. In terms of cargo, in 2015, eight of the world's thirty busiest airports were in the U.S., including the world's second busiest, Memphis International Airport, behind only Hong Kong International Airport in China. Private aircraft are also used for medical emergencies, government agencies, large businesses, and individuals, see general aviation.


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