The carrier will operate 6 or 7 flights per week on the Ha Noi – Dong Hoi route between June 1 and August 31. The flight from Ha Noi to Dong Hoi will depart 6:00 am from Tuesday to Sunday. During the peak time of summer from June 4 – August 27, the one-hour service will be available seven days a week.
The airline is offering promotional tickets priced from 600,000 VND for economy class and 1.8 million VND (79.2 USD) for business class, exclusive of taxes and fees and only applicable to travel from June 1 to August 31.
Dong Hoi City is home to a number of historical and cultural relic sites, including Phong Nha – Ke Bang National Park.
Phong Nha - Ke Bang can be compared to a huge geological museum thanks to its complicated geological structure with different categories of stone including sandstone, quartz, schist, siliceous limestone, granite, granodiorite, diorite, applet, pegmatite, etc.
Phong Nha-Ke Bang is the oldest and largest tropical karst formed 400 million years during the main geological periods of the Earth, bearing the original topographic and geologic characteristics. Experiencing major tectonic phases, high mountain ranges and the depressed sedimentary basins were formed. These fluctuations have also contributed to the diversity of geology, topography, geomorphology.
Phong Nha - Ke Bang karst mountains can provide a lot of valuable information about the Earth's prolonged geological process through various periods, from the Ordovician Age - Silurian Age (about 463.9 - 430 million year ago) to the Quaternary Age (1.75 million years ago). It is also noteworthy to mention a geological characteristic – the system of underground rivers and grottos in limestone mountains.
Besides the historical value of geology, topography, geomorphology, Phong Nha - Ke Bang is also favoured with the mysterious and majestic landscapes by nature. The Phong Nha - Ke Bang Natural Park still hides various myths of nature. It also has spectacular karst caves formed for hundreds of millions of years.
Phong Nha – Ke Bang has been declared a world natural heritage by UNESCO twice in July 2003 in the 27th meeting in Paris (France) and July 2015 in the 39th meeting in Bonn (Federal Republic of Germany).