International airport in the context of Kannur International Airport

A border checkpoint is a location on an international border where travelers or goods are inspected and allowed (or denied) passage through. Authorization often is required to enter a country through its borders. Access-controlled borders often have a limited number of checkpoints where they can be crossed without legal sanctions. Arrangements or treaties may be formed to allow or mandate less restrained crossings (e.g. the Schengen Agreement). Land border checkpoints (land ports of entry) can be contrasted with the customs and immigration facilities at seaports, international airports, and other ports of entry.

Burgas Airport (IATA: BOJ, ICAO: LBBG) is an international airport in southeast Bulgaria and the second largest in the country. It is near the northern neighbourhood of Sarafovo approximately 10 km (6.2 mi) from the city centre. The airport principally serves Burgas and other seaside resorts of the Bulgarian south coast which attract many tourists during the summer leisure season.

İzmir Adnan Menderes Airport (IATA: ADB, ICAO: LTBJ) is an international airport serving the city of İzmir and most of the surrounding İzmir province in Turkey. It is named after former Turkish prime minister Adnan Menderes (1899–1961).

A free-trade zone (FTZ) is a class of special economic zone. It is a geographic area where goods may be imported, stored, handled, manufactured, or reconfigured and re-exported under specific customs regulation and generally not subject to customs duty. Free trade zones are generally organized around major seaports, international airports, and national frontiers—areas with many geographic advantages for trade.

Ellinikon International Airport (IATA: ATH, ICAO: LGAT), sometimes spelled Hellinikon, was an international airport that served Athens, Greece, for 63 years. Following its closure on 28 March 2001, it was replaced by the new Athens International Airport Eleftherios Venizelos. The airport was located 7 kilometres (4.3 mi) south of Athens, and just west of Glyfada. It was named after the village of Elliniko, now a suburb of Athens. The airport had an official capacity of 11 million passengers per year, but served 13.5 million passengers during its last year of operations. A large portion of the site was converted into a stadium and sports facilities for the 2004 Olympic Games.

The former airport is now the site of a major development for coastal Athens, which came under criticism because well-preserved historic buildings (from the 1930s) were demolished. In 2020, construction began on the Hellenikon Metropolitan Park, a complex consisting of luxury homes, hotels, a casino, the Inspire Athens tower, a marina, shops, and offices. The first phase is supposed to be ready in between 2027 and 2028.

Istanbul Airport (IATA: IST, ICAO: LTFM) is the larger of two international airports serving Istanbul, Turkey. It is located in the Arnavutköy district on the European side of the city. It is the largest airport in Turkey, the largest privately-owned airport in the world, and the second busiest airport in Europe.

All scheduled commercial passenger flights were transferred from Atatürk Airport to Istanbul Airport on 6 April 2019, following the closure of Atatürk Airport for scheduled passenger flights. The IATA airport code IST was also transferred to the new airport.

Amsterdam Airport Schiphol (IATA: AMS, ICAO: EHAM), known informally as Schiphol Airport (Dutch: Luchthaven Schiphol, pronounced [ˌlʏxtɦaːvə(n) ˈsxɪp(ɦ)ɔl; sxɪpˈɦɔl]), is the main international airport of the Netherlands, and is one of the major hubs for the SkyTeam airline alliance. It is located 9 kilometres (5.6 mi; 4.9 nmi) southwest of Amsterdam, in the municipality of Haarlemmermeer in the province of North Holland. It was the world's fifth busiest airport by international passenger traffic in 2024. With almost 72 million passengers in 2019, it is the third-busiest airport in Europe in terms of passenger volume and the busiest in Europe in terms of aircraft movements. With an annual cargo tonnage of 1.74 million, it is the 4th busiest in Europe. AMS covers a total area of 2,787 hectares (6,887 acres) of land. The airport is built on the single-terminal concept: one large terminal split into three departure halls.

Schiphol is the principal hub for KLM and its regional affiliate KLM Cityhopper as well as for Martinair. The airport also serves as an operating base for Corendon Dutch Airlines, easyJet, Transavia, TUI fly Netherlands, and Vueling.

Paris Charles de Gaulle Airport (IATA: CDG, ICAO: LFPG), also known as Roissy Airport, is the primary international airport serving Paris, the capital of France. The airport opened in 1974 and is located in Roissy-en-France, 23 km (14 mi) northeast of the city centre of Paris. It is named after World War II leader and French President Charles de Gaulle (1890–1970), whose initials form its IATA airport code.

Charles de Gaulle Airport serves as the principal hub for Air France and a destination for other legacy carriers (from Star Alliance, Oneworld and SkyTeam), as well as an operating base for easyJet and Norse Atlantic Airways. It is operated by Groupe ADP (Aéroports de Paris) under the brand Paris Aéroport.

Dallas Fort Worth International Airport (IATA: DFW, ICAO: KDFW, FAA LID: DFW) is the primary international airport serving the Dallas–Fort Worth metroplex and the North Texas region, in the U.S. state of Texas.

It is the largest hub for American Airlines, which is headquartered near the airport, and is the third-busiest airport in the world by aircraft movements and the second-busiest airport in the world by passenger traffic in 2022 and 2023, according to the Airports Council International. As of 2025, it is the eighth-busiest international gateway in the United States and the busiest international gateway in Texas. The hub that American Airlines operates at DFW is the second-largest single airline hub in the world and the United States, behind Delta Air Lines's hub in Atlanta.

In general, a port of entry (POE) is a place where one may lawfully enter a country. It typically has border security staff and facilities to check passports and visas and to inspect luggage to assure that contraband is not imported. International airports are usually ports of entry, as are road and rail crossings on a land border. Seaports can be used as ports of entry only if a dedicated customs presence is posted there. The choice of whether to become a port of entry is up to the civil authority controlling the port.

King Khalid International Airport (Arabic: مطار الملك خالد الدولي, romanized: Maṭār al-Malik Khālid al-Duwaliyy; IATA: RUH, ICAO: OERK) is an international airport located about 35 kilometres (22 mi) north of Riyadh, Saudi Arabia. This airport consists of five passenger terminals with eight aero-bridges each, a mosque, and parking facilities for 11,600 vehicles. It includes a "Royal Terminal" designated for use by government officials, state guests, and the Saudi royal family. The airport has one of the world's tallest air traffic control towers, and two parallel runways, each 4,260 metres (13,980 ft) in length. It is one of the busiest airports in the Middle East. The airport is owned and operated by the state-owned Riyadh Airports Company.

The Royal Mosque was designed with a significant programme of integral art; the stained glass, by British architectural artist Brian Clarke, was a landmark work in the history of the medium, considered to be the largest and technically most advanced stained glass project of the modern period.

Leonardo da Vinci Rome Fiumicino Airport (Italian: Aeroporto internazionale di Roma-Fiumicino "Leonardo da Vinci") (IATA: FCO, ICAO: LIRF) is an international airport in Fiumicino, Italy, serving Fiumicino, Rome, its metropolitan city, the Lazio region and the Vatican City. It is the busiest airport in the country, the eighth-busiest airport in Europe and the world's 39th-busiest airport with over 49.2 million passengers served in 2024. It covers an area of 16 km (6.2 sq mi).

Fiumicino serves as the main hub for ITA Airways, the Italian flag carrier and the largest airline in the country, and Poste Air Cargo. It was previously the hub for Alitalia, the defunct airline that was Italy's largest and main flag carrier. It is also an operating base for several other airlines, such as AeroItalia, easyJet, Neos, Ryanair, Vueling and Wizz Air.

Jorge Chávez International Airport (IATA: LIM, ICAO: SPJC, SPIM) is the main international airport serving Lima, the capital of Peru. It is located in Callao, 11 kilometers (6.8 mi) northwest of the Historic Centre of Lima, the nation's capital city, and 17 kilometers (11 mi) from the district of Miraflores. In 2023, the airport served 22,876,785 passengers. Historically, the airport was the hub for Compañía de Aviación Faucett, which was the second oldest airline in the Americas, and Aeroperú, which served as Peru's flag carrier. Now it serves as a hub for many aviation companies. The airport was named after Peruvian aviator Jorge Chávez (1887–1910). It is among the busiest and largest airports in South America, providing international flights to North America, South America, Central America, the Caribbean and Europe, along with domestic flights in Peru.

In 2022, it entered the list of the 50 most important air hubs worldwide, occupying position number 47 after having been in position 58 in 2019 according to the international air statistics consultancy OAG. It is owned by the German transport company Fraport and operated by Lima Airport Partners.

Narita International Airport (成田国際空港, Narita Kokusai Kūkō; IATA: NRT, ICAO: RJAA) — originally known as New Tokyo International Airport (新東京国際空港, Shin Tōkyō Kokusai Kūkō) — is the secondary international airport serving the Greater Tokyo Area, the other being Haneda Airport (HND). It is about 60 km (37 mi) east of central Tokyo in Narita, Chiba. The facility, since July 2019, covers 1,137 hectares (2,810 acres) of land and construction to expand to nearly 2,300 ha (5,700 acres) is underway.

The conceptualization of Narita was highly controversial and remains so to the present day, especially among local residents in the area. This has led to the Sanrizuka Struggle, stemming from the government's decision to construct the airport without consulting most residents in the area, as well as expropriating their lands in the process. Even after the airport was eventually completed, air traffic movements have been controlled under various noise related operating restrictions due to its direct proximity with residential neighborhoods, including a house with a farm that is located right in between the runways. As a result, the airport must be closed from 00:00 (12:00am) to 06:00 (6:00am) the next day to minimize the noise pollution impact around the airport.

Taiwan Taoyuan International Airport (Traditional Chinese: 臺灣桃園國際機場) (IATA: TPE, ICAO: RCTP) is the main international airport serving Taiwan, particularly the northern region and Taipei. Located in Dayuan, Taoyuan, approximately 40 km (25 mi) west of Taipei, the airport is the busiest and largest in Taiwan. In 2016, it was ranked the best airport for its size in the Asia-Pacific region by Airports Council International.

The airport opened for commercial operations in 1979 as Chiang Kai-shek International Airport (中正國際機場) and was renamed in 2006. It is an important regional transshipment center, passenger hub, and gateway for destinations in Asia, and is one of two international airports that serve Taipei. The other, Taipei Songshan Airport, is located within the city limits and served as Taipei's only international airport until 1979. Songshan now mainly serves chartered flights, intra-island flights, and limited international flights.

Kempegowda International Airport (IATA: BLR, ICAO: VOBL) is an international airport serving Bengaluru, the capital of the Indian state of Karnataka. Spread over 16 square kilometres (6.2 sq mi), it is located about 35 km (22 mi) north of the city, near the suburb of Devanahalli. It is owned and operated by Bengaluru International Airport Limited (BIAL), a public–private consortium. The airport opened in May 2008, as an alternative to the increasingly congested HAL Airport, the original commercial airport serving the city. It is named after Kempe Gowda I, the founder of Bengaluru. It is Karnataka's first fully solar powered airport, developed by CleanMax Solar.

The airport is the third-busiest in India, behind the airports in Delhi and Mumbai. It is the 26th busiest airport in Asia and the 54th busiest airport in the world as of 2024. In FY2024-25, the airport handled over 41.87 million passengers and 502,509 tonnes (553,921 short tons) of cargo. The airport offers connecting flights to all 6 inhabited continents, and direct flights to 5.

Simón Bolívar International Airport (Spanish: Aeropuerto Internacional Simón Bolívar) (IATA: SMR, ICAO: SKSM) is an international airport serving the city of Santa Marta, Colombia. The airport is located 14 kilometres (8.7 mi) south of Santa Marta city center, on the shores of the Caribbean Sea. 18 kilometres (11 mi) north of the municipality of Ciénaga in Colombia.

It is operated by Aeropuertos De Oriente S.A.S., through a concession agreement with Aerocivil. It is the international airport of Colombia with the shortest runway, 1700 meters long.

Suvarnabhumi Airport (Thai: ท่าอากาศยานสุวรรณภูมิ) (IATA: BKK, ICAO: VTBS) is the main international airport serving Bangkok, the capital city of Thailand. It is one of two airports serving Bangkok, the other being Don Mueang International Airport (DMK). Located mostly in Racha Thewa commune, Bang Phli district, Samut Prakan province, it covers an area of 3,520 ha (35.2 km; 8,700 acres), making it one of the biggest international airports in Southeast Asia, tenth biggest in the world and a regional hub for aviation. It has an Airport Rail Link, an Automated People Mover as well as being located close to Motorway 7.

Tentatively named Nong Nguhao before changing to Suvarnabhumi — a toponym that appears in many ancient Indian literary sources and Buddhist text — Suvarnabhumi is the busiest in the country, ninth busiest airport in Asia, and 20th busiest airport in the world, handling 62,234,693 passengers in 2024. As of 2025, it is served by the most airlines in the world, with 113 airlines operating from the airport.

Denver International Airport (IATA: DEN, ICAO: KDEN, FAA LID: DEN), often referred to by locals as DIA, is an international airport in the Western United States, primarily serving metropolitan Denver, Colorado, as well as the greater Front Range Urban Corridor.

Runway 16R/34L, with a length of 16,000 feet (3.03 mi; 4.88 km), is the longest public use runway in North America and the seventh longest on Earth. The airport is 25 miles (40 km) driving distance northeast of Downtown Denver, 19 miles (31 km) farther than the former Stapleton International Airport which DEN replaced; the airport is actually closer to the City of Aurora than central Denver, and many airport-related services, such as hotels, are located in Aurora.