List of busiest passenger air routes
By number of passengers -- World
Table:
Rank

City/airport 1

City/airport 2

2018[1]

2017[3][4]

2015 (in millions)[5]

1
Hong Kong
Taipei-Taoyuan

6,476,268

6,719,030

2

Jakarta

Singapore

4,812,342

4,810,602

3.4

3

Kuala Lumpur

Singapore

4,490,463

4,108,824

2.7

4

Bangkok-Suvarnabhumi

Hong Kong

3,490,988

3,438,628

3

5
Seoul-Incheon
Osaka-Kansai

3,210,813

2,907,199

6
Jakarta
Kuala Lumpur

3,170,193

2,812,479

7

Hong Kong

Seoul-Incheon

3,081,942

3,198,132

8
Hong Kong
Manila

3,008,842

2,907,228

9

Hong Kong

Singapore

2,923,578

3,147,384

2.7

10
Tokyo-Narita
Taipei-Taoyuan

2,848,925

2,592,049

Based on the tabular data and the relevant paragraphs listed.

Answer the following question: How many destinations in China does the airport that is the starting airport of the busiest passenger route fly to ? Return your answer as JSON: {"answer": "YOUR ANSWER"}. Use only the information given.

Hong Kong International Airport ( IATA : HKG , ICAO : VHHH ) is Hong Kong 's main airport , built on reclaimed land on the island of Chek Lap Kok . The airport is also referred to as Chek Lap Kok International Airport ( 赤鱲角機場 ) or Chek Lap Kok Airport , to distinguish it from its predecessor , the former Kai Tak Airport . Having been in commercial operation since 1998 , Chek Lap Kok Airport is an important regional trans-shipment centre , passenger hub and gateway for destinations in China ( with 45 destinations ) and the rest of Asia . The airport is the world 's busiest cargo gateway and one of the world 's busiest passenger airports . It is also home to one of the world 's largest passenger terminal buildings ( the largest when opened in 1998 ) . The airport is operated by the Airport Authority Hong Kong 24 hours a day and is the primary hub for Cathay Pacific ( the flag carrier of Hong Kong ) , Cathay Dragon , Hong Kong Airlines , HK Express and Air Hong Kong ( cargo carrier ) . The airport is one of the hubs of Oneworld alliance , and also one of the Asia-Pacific cargo hubs for UPS Airlines . It is a focus city for many airlines , including China Airlines and China Eastern Airlines . Singapore Airlines , Ethiopian Airlines and Air India utilise Hong Kong as a stopover point for their flights . HKIA is an important contributor to Hong Kong 's economy , with approximately 65,000 employees . More than 100 airlines operate flights from the airport to over 180 cities across the globe . In 2015 , HKIA handled 68.5 million passengers , making it the 8th busiest airport worldwide by passenger traffic .
Taiwan Taoyuan International Airport ( IATA : TPE , ICAO : RCTP ) is an international airport serving Taipei and northern Taiwan . Located about 40 km ( 25 mi ) west of Taipei in Dayuan District , Taoyuan , the airport is Taiwan 's largest and busiest airport . It is operated by the Taoyuan International Airport Corporation . 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 and is an important regional trans-shipment center , passenger hub , and gateway for destinations in Asia . Formerly known as Chiang Kai-shek International Airport , it was renamed on 6 September 2006 to its current name . It is one of two that serves Taipei ; the other , Taipei Songshan Airport , is located within 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 . In 2018 , Taiwan Taoyuan handled a record 46.5 million passengers and 2.3 billion kg of freight , making it the 11th busiest airport worldwide by international passenger traffic , and 8th busiest in terms of international freight traffic in 2018 . It is the main international hub for China Airlines and EVA Air . It is also a hub of Uni Air and the LCC Tigerair Taiwan .
Soekarno-Hatta International Airport ( Indonesian : Bandar Udara Internasional Soekarno-Hatta ) ( IATA : CGK , ICAO : WIII ) , abbreviated SHIA or Soetta or Cengkareng airport ( Indonesian : Bandara Cengkareng ) ( hence the IATA designator CGK ) , is the primary airport serving the Jakarta metropolitan area on the island of Java in Indonesia . Named after the first president and vice-president of Indonesia , Soekarno and Mohammad Hatta , the airport is located at Benda , Tangerang , which is about 20 km northwest of Central Jakarta . Together with Halim Perdanakusuma International Airport , they served over 75 million passengers of Greater Jakarta in 2018 . The airport commenced domestic operations in 1 May 1985 replacing the old over-capacity Kemayoran Airport . The airport was expanded in 1991 to replace Halim Perdanakusuma International Airport for international flights , which still serves domestic charter , VIP , private flights , and re-opened as a second commercial airport for domestic flights to relieve pressure over Soekarno-Hatta airport that is currently running over capacity . The airport served 66.9 million passengers in 2018 , ranked as 18th busiest airport in the world by Airports Council International , and the busiest in Southeast Asia . According to air travel intelligence company OAG , the airport ranked as the 7th most connected airport in the world , and ranked first as 'megahub ' airport in Asia-Pacific region as per connectivity index , ahead of Japan 's Tokyo Haneda Airport and Australia 's Sydney Airport . The airport ranked as the 7th most connected airport as 'megahub ' in the world in 2017 again by air travel intelligence company OAG . The airport ranked as the 2nd most connected Low-Cost Megahub airport as 'megahub ' in the world in 2018 by air travel intelligence company OAG . The airport often struggles to accommodate all flights at its current limit of 81 aircraft movements per hour . Although over capacity , after a survey ACI in 2012 declared that Soekarno-Hatta International Airport is being operated safely . The two existing runways suffer from pavement and strength issues , which limits the airport 's capacity to serve large aircraft .
Singapore Changi Airport , commonly known as Changi Airport ( IATA : SIN , ICAO : WSSS ) , is a major civilian airport that serves Singapore , and is one of the largest transportation hubs in Asia . It is currently rated the World 's Best Airport by Skytrax for the seventh consecutive year since 2013 . It is also the first Airport in the world to do so for seven consecutive years and is one of the world 's busiest airports by international passenger and cargo traffic . The airport is located in Changi , at the eastern end of Singapore , approximately 20 km ( 12 mi ) from Marina Bay ( Singapore 's Downtown Core ) , on a 13-square-kilometre ( 5.0 sq mi ) site . The airport is operated by Changi Airport Group and it is the home base of Singapore Airlines , Singapore Airlines Cargo , SilkAir , Scoot , Jetstar Asia Airways and BOC Aviation . In 2019 , Changi served 68.3 million passengers , making it the 16th busiest airport in the world .
Kuala Lumpur International Airport ( KLIA ) ( Bahasa Malaysia : Lapangan Terbang Antarabangsa Kuala Lumpur ) , ( IATA : KUL , ICAO : WMKK ) is Malaysia 's main international airport and one of the major airports in Southeast Asia and worldwide . It is located in Sepang District of Selangor , approximately 45 kilometres ( 28 mi ) south of Kuala Lumpur city centre and serves the Greater Klang Valley conurbation . KLIA is the largest and busiest airport in Malaysia . In 2018 , it handled 59,988,409 passengers , 714,669 tonnes of cargo and 399,827 aircraft movements . It is the world 's 23rd-busiest airport by total passenger traffic . The airport is operated by Malaysia Airports ( MAHB ) Sepang Sdn Bhd and is the major hub of Malaysia Airlines , MASkargo , AirAsia , AirAsia X , Malindo Air , flyGlobal , UPS Airlines and AsiaCargo Express .
Suvarnabhumi Airport ( Thai : ท่าอากาศยานสุวรรณภูมิ , RTGS : Tha-akatsayan Suwannaphum , pronounced [ tʰâː.ʔāː.kàːt̚.sā.jāːn.sùʔ.wān.nā.pʰūːm ] ( listen ) ; from Sanskrit सुवर्णभूमि ( Suvarṇabhūmi ) , literally 'golden land ' ) ( IATA : BKK , ICAO : VTBS ) , also known unofficially as Bangkok Airport , is one of two international airports serving Bangkok , Thailand . The other one is Don Mueang International Airport , which was the main international airport from 1924 to 2006 and transitioned in 2007 to become the low-cost airlines hub for Bangkok . Suvarnabhumi covers an area of 3,240 ha ( 32.4 km2 ; 8,000 acres ) , making it one of the biggest international airports in Southeast Asia and a regional hub for aviation .
Incheon International Airport ( IIA ) ( Korean : 인천국제공항 ; Hanja : 仁川國際空港 ) ( IATA : ICN , ICAO : RKSI ) ( sometimes referred to as Seoul-Incheon International Airport ) is the largest airport in South Korea , the primary airport serving the Seoul Capital Area , and one of the largest and busiest airports in the world . Since 2005 , it has been rated the best airport worldwide by Airports Council International every year . It is also rated as the world 's cleanest airport and the world 's best international transit airport by Skytrax . The airport has a golf course , spa , private sleeping rooms , an ice skating rink , a casino , indoor gardens , video game center and a Museum of Korean Culture . Airport authorities claim that average departure and arrival takes 19 minutes and 12 minutes , respectively , as compared to worldwide average of 60 minutes and 45 minutes , respectively , ranking it among the fastest airports in the world for customs processing . Its duty-free shopping mall has been rated the world 's best for three years in a row in 2013 by Business Traveller . Incheon International Airport also claims that it has only a 0.0001% baggage mishandling rate . The airport opened for business on March 29 , 2001 to replace the older Gimpo International Airport , which now serves mostly domestic destinations and shuttle flights to several East Asian metropolitan areas including Tokyo , Osaka , Beijing , Shanghai , and Taipei . Incheon International Airport is located west of Incheon 's city center , on an artificially created piece of land between Yeongjong and Yongyu Islands . The two islands were originally separated by shallow sea . That area between the two islands was reclaimed for the construction project , effectively connecting the once separate Yeongjong and Yongyu islands . The reclaimed area as well as the two islands are all part of Jung-gu , an administrative district of Incheon .
Kansai International Airport ( 関西国際空港 , Kansai Kokusai Kūkō , colloquially known as Kankū ( 関空 ) ) ( IATA : KIX , ICAO : RJBB ) is an international airport located on an artificial island ( Kankūjima ( 関空島 ) ) in the middle of Osaka Bay off the Honshu shore , 38 km ( 24 mi ) southwest of Ōsaka Station , located within three municipalities , including Izumisano ( north ) , Sennan ( south ) , and Tajiri ( central ) , in Osaka Prefecture , Japan . Kansai opened on 4 September 1994 to relieve overcrowding at the original Osaka International Airport , referred to as Itami Airport , which is closer to the city of Osaka and now handles only domestic flights . It consists of two terminals : Terminal 1 and Terminal 2 . Terminal 1 , designed by Italian architect Renzo Piano , is the longest airport terminal in the world with a length of 1.7 km ( 1.1 mi ) . The airport serves as an international hub for All Nippon Airways , Japan Airlines , and Nippon Cargo Airlines , and also serves as a hub for Peach , the first international low-cost carrier in Japan . In 2016 , 25.2 million passengers used the airport making it the 30th busiest airport in Asia and 3rd busiest in Japan . Freight volume was at 802,162 tonnes total , of which 757,414 t were international ( 18th in the world ) , and 44,748 t were domestic . The 4,000 m × 60 m ( 13,123 ft × 197 ft ) second runway was opened on 2 August 2007 . As of June 2014 [ update ] , Kansai Airport has become an Asian hub , with 780 weekly flights to Asia and Australasia ( including freight 119 ) , 59 weekly flights to Europe and the Middle East ( freight 5 ) , and 80 weekly flights to North America ( freight 42 ) .
The Ninoy Aquino International Airport ( Filipino : Paliparang Pandaigdig ng Ninoy Aquino ) or NAIA ( /ˈnaɪə/ , locally /nɑː.ˈiː.jə/ ) , formerly known and still commonly referred to as Manila International Airport ( IATA : MNL , ICAO : RPLL ) as well as its codename Nichols Field ( Nichols ) , is the airport serving Manila and its surrounding metropolitan area . Located along the border between the cities of Pasay and Parañaque , about 7 kilometers ( 4.3 mi ) south of Manila proper and southwest of Makati . NAIA is the main international gateway for travelers to the Philippines and serves as a hub for AirAsia Philippines , Cebgo , Cebu Pacific , PAL Express , and Philippine Airlines . It is managed by the Manila International Airport Authority ( MIAA ) , a branch of the Department of Transportation ( DOTr ) . Officially , NAIA is the only airport serving the Manila area . However , in practice , both NAIA and Clark International Airport , located in the Clark Freeport Zone in Pampanga , serve the Manila area , with Clark catering mostly to low-cost carriers because of its lower landing fees compared to those charged at NAIA . In the recent past there have been calls for Clark to replace NAIA eventually as the primary airport of the Philippines . The airport is named after the late Senator Benigno Ninoy Aquino Jr. , who was assassinated at the airport in 1983 . In 2018 , all terminals at NAIA handled a record-breaking annual passenger traffic of 45,082,544 , an increase of 6.79% from the previous year . It will be replaced by the New Manila International Airport , which is located in Bulacan , to serve both Metro Manila and Central Luzon .
Narita International Airport ( 成田国際空港 , Narita Kokusai Kūkō ) ( IATA : NRT , ICAO : RJAA ) , also known as Tokyo Narita Airport , formerly and originally known as New Tokyo International Airport ( 新東京国際空港 , Shin Tōkyō Kokusai Kūkō ) , is an international airport serving the Greater Tokyo Area of Japan . It is located approximately 60 kilometres ( 37 mi ) east of central Tokyo . It is located in Narita , Chiba . As of 2015 [ update ] Narita is the predominant international airport in Japan , handling around 50% of the country 's international passenger traffic and 60% of its international air cargo traffic . As of 2016 , Narita was the second-busiest passenger airport in Japan ( after Haneda Airport in Tokyo ) , and was the tenth-busiest air freight hub in the world . Its 4,000-metre ( 13,123 ft ) main runway shares the record for longest runway in Japan with the second runway at Kansai International Airport in Osaka . Narita serves as the main international hub of Japan Airlines , All Nippon Airways and Nippon Cargo Airlines , and as a hub for low-cost carriers Jetstar Japan and Peach . At Narita , air traffic movements have been controlled under various noise related operating restrictions . As a result , the airport must be closed from 11:00pm to 6:00am the next day to minimize noise impact around the airport .