The airline also plans to resume international flights next year.
Mr Patee said the international relaunch will be carried out in a cautious step-by-step manner, avoiding the mistakes that plunged the budget carrier into a financial crisis several years ago.
The International roll-out comes just as THAI recently scrapped a proposed joint venture with Nok Air to launch a separate regional ultra-low-cost carrier to compete with AirAsia.
THAI chairman Ampon Kittiampon told reporters earlier that the planned joint venture was terminated due to the flag carrier's poor financial performance and difficult outlook.
THAI will spend more time trying to turn its balance sheet around this year after losing 10.2 billion baht last year.
The resumption of Nok Air's international service will probably start with southern China and will not clash with THAI or its discount offshoot, THAI Smile.
