Of which, Jeju - Seoul (South Korea) is the most popular flight route globally, with 13.2 million passengers flying between the two airports in 2024. In second place is the Sapporo - Tokyo Haneda airport pair with 9.2 million passengers; third place also belongs to Japan with the Fukuoka - Tokyo Haneda route with 9 million.
In fourth place is the Noi Bai - Tan Son Nhat airport pair ( Hanoi - Ho Chi Minh City) with 8 million passengers. Followed by Melbourne - Sydney (Australia, 7.2 million); Jeddah - Riyadh (Saudi Arabia, 6.3 million); Mumbai - Delhi (India, 5.9 million); Tokyo Haneda - Okinawa (Japan, 5.6 million). Surprisingly, China, a country with over a billion people, but its busiest routes are not in the top 5, when Shanghai Hongqiao - Shenzhen and Beijing - Shanghai Hongqiao both have 5.3 million, ranking 9th and 10th.
Crowded passengers at Tan Son Nhat airport PHOTO: CAB
The world's busiest airport pairs by region in 2024 include: Bogota - Medellin is the busiest in Latin America with 3.8 million passengers, while Cape Town - Johannesburg is the busiest in Africa, with 3.3 million. John F. Kennedy International Airport New York - Los Angeles is the busiest in North America with 2.2 million, while Barcelona - Palma de Mallorca is the busiest route in Europe with 2 million passengers.
Meanwhile, India and China are the two most populous countries in the world, but they are not the two countries with the most air travelers. The United States is the world's largest aviation market, with 876 million passengers in 2024, mostly domestic flights. That is four times the number of passengers in India, the world's most populous country and fifth-largest aviation market.
However, China is hot on the heels of the US in second place, with 741 million passengers by 2024 and a whopping 18.7% year-on-year growth, compared to a modest 5.2% growth for the US.
Top 10 busiest airport pairs in the world PHOTO: IATA
The UK is just an island nation of 243,000 square kilometres, with a population of around 69 million, but it is the world's third largest aviation market, with 261 million passengers by 2024. Spain is fourth, with 241 million passengers last year.
Ultimately, despite the Boeing 737 Max's recent troubles, the Boeing 737 (including all variants) remains the world's most used aircraft, flying 10 million flights by 2024.
Occupying the second and third spots are also narrow-body aircraft, manufactured by Airbus, Boeing's European competitor. The A320 has flown 7.9 million flights and the A321 has flown 3.4 million flights.
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