[3][verification needed] The creation of the airline was announced by Ampon Kittiampon, the chairman of Thai's board of directors, on 19 August 2011.

[4] According to Ampon, THAI Smile was intended to serve the market gap between low-cost carriers and full service airlines.

[4] The name THAI Smile was chosen from a pool of 2,229 entries in a contest to name the airline.

[4] In February 2023, it was reported that Thai Smile would be dissolved as a separate entity and merged with its parent company, Thai Airways International, by mid-2024 in an effort to reduce losses.

The airline served only domestic destinations before ceasing operations on 31st December 2023.:[9] As of 2023[update], THAI Smile operated the following aircraft:[14] Media related to Thai Smile at Wikimedia Commons