TLDR : Answer Summary
Overstaying a visa in Thailand, even by just 2 days, can lead to various consequences. Generally, if you reach the airport, you'll likely pay a fine of about 1000 baht and receive an overstay stamp in your passport. However, if you're caught by immigration or police before reaching the airport, you may face arrest, detention, and a potential ban from re-entering Thailand for several years. While many expats report minimal issues with short overstays, it poses risks, particularly if you interact with law enforcement. It's recommended to avoid overstaying, seek visa extensions where possible, and follow immigration laws to prevent complications in future visits.