BANGKOK, THAILAND – Asia dominated the world’s busiest international air routes for 2025, with Bangkok–Hong Kong ranked among the top ten.
Asia led global air traffic rankings
A new analysis by aviation data firm OAG found that seven of the ten busiest international routes in 2025 were located in Asia.
“The list highlights the strong recovery and the growing importance of Asia for the global aviation industry.”
said OAG experts. The route between Hong Kong–Taipei topped the ranking with more than 6.8 million seats a year.
Bangkok–Hong Kong entered the global top tier
Thailand recorded a notable success with the popular Bangkok–Hong Kong connection securing eighth place worldwide. OAG reported 4,169,125 seats per year on this route in 2025. This underscored Bangkok’s pull as a regional hub and the close economic and tourism ties with the Chinese special administrative region, marking a clear win for Suvarnabhumi.
Top 10 international routes by capacity
According to the study, the ten busiest international routes in 2025 were led by Hong Kong–Taipei with 6,832,683 seats. Cairo–Jeddah followed with 5,753,491 seats, ahead of Kuala Lumpur–Singapore with 5,574,409 seats. Other high-capacity corridors included Seoul Incheon–Tokyo Narita, Seoul Incheon–Osaka Kansai, Jakarta–Singapore, Dubai–Riyadh, Bangkok–Hong Kong, Tokyo Narita–Taipei and New York–London Heathrow.
Low fares on mega-routes
The report also highlighted striking ticket prices on several of these routes. On Kuala Lumpur–Singapore, ranked third by capacity, the average fare was the lowest at 62 US dollars (about 55 euros). On the leading Hong Kong–Taipei route, intense competition among seven airlines kept typical ticket prices at around 115 US dollars (about 105 euros), while in the Middle East the Cairo–Jeddah corridor surged with a 71 percent increase compared with 2019.
Implications for Thai tourism and economy
The strong placement was described as a clear signal of the strength of Thai tourism and the broader economy. It confirmed that Bangkok remained an indispensable global hub in international air traffic. For passengers, the high capacity translated into better chances of finding cheaper tickets and flexible connections, with the air bridge between Thailand and Hong Kong seen as one of Asia’s key lifelines and expected to be busier in 2025 than ever before.
Growth pressures on airports and infrastructure
The study indicated that full planes, falling prices and expanding capacity showed Asia firmly back at the centre of global aviation. At the same time, it warned that each additional seat increased the pressure on airports as well as on the environment and infrastructure. The findings raised the question of whether this growth would prove a sustainable success or push air traffic toward its next bottleneck.