Do I need to show an onward ticket with a Non-Immigrant O visa upon entering Thailand?

When entering Thailand on a Non-Immigrant O visa, you are generally not required to show proof of onward travel. Many users reported that they were able to enter without an exit ticket, as the Non-O visa is long-term and does not necessitate this proof. If an airline representative questions this requirement, it is advisable to speak with a flight supervisor or clearly state that a valid visa suffices.