Vietnam Airlines operates minibuses that run between Noi Bai airport and Hanoi for USD $2 each. The buses and ticket office are located opposite the Vietnam Airlines office at Quang Trung. We pre-bought the bus tickets, although it’s not necessary. Prepare small change of US Dollars, if not they will give you the change in Vietnam Dong instead, of course, also in unfavorable rate (typically VND 15,000 to USD $1).