Getting Around Vietnam: Trains, Buses, and Domestic Flights

The Reunification Express runs the length of the country and is worth choosing for the Hai Van Pass segment between Hue and Da Nang alone, even if you fly the rest of the route. Sleeper buses are the cheapest overnight option and cover routes the railway does not, though seat comfort varies a lot between operators.

For distances over 500 kilometers, a domestic flight often costs about the same as a sleeper berth once you account for the time saved, and budget carriers run frequent schedules between the main cities.