Nok Air (derived from nok the Thai word for bird), is a low-cost airline in Thailand operating mostly domestic services out of Bangkok's Don Mueang International Airport. Thai Airways International owns the fourth-largest stake in the airline
Nok Air was established in February 2004 as Sky Asia Co. Ltd., and started operations on 23 July 2004. As of March 2007, it had 130 employees and had reached around 1,400 employees by 2014. Nok Air began its first international service on 31 May 2007, with daily flights to Bangalore, India, but suspended these flights in 2020.
Nok Air serves the largest number of domestic routes within Thailand, with 24 routes.
Nok Air operates largely independently from Thai Airways, which has caused some friction between the two companies. To gain greater control of Nok Air, Thai Airways has tried to purchase the shares of other shareholders, notably Krungthai Bank. Although Thai Airways and Krungthai Bank are both state enterprises under the control of the finance ministry, Krungthai Bank refused to sell its shares in Nok Air to Thai Airways.