Hanoi’s sparkling new Noi Bai International Airport is being built right next to the old airport, which lies 45km north of Hanoi, and there are lots of ways of getting between it and the city. Hanoi city bus numbers 07 and 17 leave from the right side of the terminal exit and take an hour, running from 5.00 to 22.00. The buses run every 15-20 minutes. Airport minibuses congregate outside the arrival hall - the Vietnam Airlines minibus takes about 40 minutes and drops you outside their Hoan Kiem Lake office (south end). Tickets are sold inside the terminal building. However, many travellers opt for a taxi - there are hundreds outside the terminal exit gate. Unlike the minibuses, which run only intermittently at night, taxis are present 24 hours a day. Taxi ride to the city center takes about 30 minutes.