Online travel booking agency Agoda revealed that Da Nang-Hanoi has been the seventh-cheapest domestic air route in the Asia-Pacific region in recent times, with fares costing from VND548,000 (US$23).
Source: VNExpress International,
https://e.vnexpress.net/news/travel/da-nang-hanoi-air-route-ranks-high-in-agoda-domestic-price-report-4647364.html