Do children need to meet a certain age requirement to enter Thailand alone?

A parent is inquiring about the age requirements for children to enter Thailand alone. Their 17-year-old son and 12-year-old daughter plan to travel, but their mother cannot accompany them. While most airlines allow a 12-year-old to travel under the supervision of a 17-year-old, specific entry regulations for Thailand and airline policies on unaccompanied minors are crucial to consider. Advice from other users suggests checking airline policies and ensuring vaccination and entry requirements are met, especially in light of COVID-19 guidelines.