The Hanoi-Ho Chi Minh City route is listed among the world’s four busiest domestic air routes in 2025 (Photo: OAG)
OAG said around 11 million seats were scheduled on the route in 2025, up 4 per cent year on year and 8 per cent above 2019 levels. The route remains highly competitive, with six airlines operating services this year, while airfares fell 11 per cent year on year, bringing the average one-way ticket price down to USD 67.
South Korea’s Jeju–Seoul route topped the ranking, with 14.4 million seats scheduled in 2025, equivalent to nearly 39,000 seats per day on the 243-nautical-mile sector. Capacity on the route is 1 per cent higher than in 2024, though still 17 per cent below 2019 levels. Average one-way fares dropped 11 per cent year on year to USD 44.
The second- and third-busiest domestic routes were both in Japan: Sapporo New Chitose-Tokyo Haneda and Fukuoka-Tokyo Haneda.
Other routes on the list included Jeddah-Riyadh in Saudi Arabia, Melbourne-Sydney in Australia, Tokyo Haneda-Okinawa Naha in Japan, Delhi-Mumbai in India, Beijing-Shanghai, and Shanghai Hongqiao-Shenzhen in China.