The busiest flight route in the world in 2017 was again Jeju-Seoul Gimpo.
As many as 13.4 million passengers used this domestic service in South
Korea. This is evident from figures that Routes Online announced on the eve
of the international network event World Routes 2018 in Guangzhou, China.
 
The Jeju-Seoul route has a length of only 450 kilometers. Every day 180
flights take place between the two cities, with on board mainly tourists
from the South Korean capital Seoul who visit the island of Jeju. On
average every eight minutes a scheduled flight departs on this route.
 
It does not look like Jeju-Seoul is quickly overtaken by another route. On
the second busiest scheduled service flight in the world, Melbourne -
Sydney Kingsford Smith, 9.1 million people travel annually. In addition,
the number of passengers on the South Korean route grew by 9.4 percent in
2017.
 
The rest of the top ten of the world's busiest flight routes is dominated
by domestic liner services in Asia. The busiest international scheduled
flight was Hong Kong - Taiwan Taoyuan in 2017, with 6.7 million passengers.
Of the ten busiest international routes, six are from or to Hong Kong.
 
Top 10 busiest scheduled flights in the world:
                            Passengers (2017)
1 Jeju - Seoul Gimpo (CJU-GMP) 13,460,306
2 Melbourne - Sydney Kingsford Smith (MEL-SYD) 9,090,941
3 Sapporo - Tokyo Haneda (CTS-HND) 8,726,502
4 Fukuoka - Tokyo Haneda (FUK-HND) 7,864,000
5 Mumbai - Delhi (BOM-DEL) 7,129,943
6 Beijing Capital - Shanghai Hongqiao (PEK-SHA) 6,833,684
7 Hanoi - Ho Chi Minh City (HAN-SGN) 6,769,823
8 Hong Kong - Taiwan Taoyuan (HKG-TPE) 6,719,030
9 Jakarta - Juanda Surabaya (CGK-SUB) 5,271,304
Tokyo Haneda - Okinawa (HND-OKA) 5,269,481
 
Top 10 busiest international scheduled flights in the world:
                             Passengers (2017)
1 Hong Kong - Taiwan Taoyuan (HKG-TPE) 6,719,030
2 Jakarta - Singapore Changi (CGK-SIN) 4,810,602
3 Hong Kong - Shanghai Pudong (HKG-PVG) 4,162,347
4 Kuala Lumpur - Singapore Changi (KUL-SIN) 4,108,824
5 Bangkok Suvarnabhumi - Hong Kong (BKK-HKG) 3,438,628
6 Dubai - London Heathrow (DXB-LHR) 3,210,121
7 Hong Kong - Seoul Incheon (HKG-ICN) 3,198,132
8 Hong Kong - Singapore Changi (HKG-SIN) 3,147,384
9 New York JFK - London Heathrow (JFK-LHR) 2,972,817
10 Hong Kong - Beijing Capital (HKG-PEK) 2,962,707
 
Top 10 fastest growing scheduled flights in the world:
                       Growth on annual basis
1 Bangkok Suvarnabhumi - Chiang Mai (BKK-CNX) 36.0%
2 Seoul Incheon - Kansai International (ICN-KIX) 30.3%
3 Jakarta - Kuala Lumpur (CGK-KUL) 29.4%
4 Delhi - Pune (DEL-PNQ) 20.6%
5 Chengdu - Shenzhen Bao'an (CTU-SZX) 16.8%
6 Hong Kong - Shanghai Pudong (HKG-PVG) 15.5%
7 Bangkok Suvarnabhumi - Phuket (BKK-HKT) 14.9%
8 Jeddah - Riyadh King Kalid (JED-RUH) 13.9%
9 Jakarta - Kualanamu (CGK-ENT) 13.9%
10 Kolkata - Delhi (CCU-DEL) 13.4%
 
Busiest routes by region
Asia-Pacific: Jeju - Seoul Gimpo (CJU-GMP)
Middle East: Jeddah - Riyadh King Kalid (JED-RUH)
Africa: Cape Town - O.R. Tambo Johannesburg (CPT-JNB)
Latin America: Cancun - Mexico City (CUN-MEX)
North America: New York JFK - Los Angeles (JFK-LAX)
Europe: Izmir - Istanbul Ataturk (ADB-IST)

--- D'Bridge 3.99 SR33