The visa and Immigration procedures at Hanoi airport (Noi Bai Airport) is simple and straightforward. The process should take around 15 minutes. Photo service is available, however, it is strongly recommended that you have your visa photos taken in advance.
Update: As of 2016, the stamping fee for 1 month single entry is 25 USD per person.
Taxi to the city:
You may also catch a taxi at Noi Bai airport terminal arrivals level. Airport taxi costs a fixed VND 320,000 (US$16) for both 4 and 7 seaters cars (toll charges are included in the price). There are five taxi companies for your choice below:
1 - Mai Linh Taxi - Green
2 - Dai Nam Taxi - Light Blue
3 - Viet Thanh Taxi - white-blue colour (we used and recommended) 043-563-6666
4 - Noi Bai airport Taxi - Light Yellow
5 - Airport Taxi - Light Blue