Is the 6-month passport validity rule strictly enforced by Thailand immigration or the airline?

The enforcement of the 6-month passport validity rule for entry into Thailand can depend on multiple factors, such as immigration regulations and airline policies. Generally, the requirement is stricter when applying for a visa in advance from a Thai consulate. However, upon arrival in Thailand, having enough validity to cover the duration of stay may suffice for entry. It's also noted that other neighboring countries may enforce the 6-month validity rule more strictly.