Here are the Wi-Fi passwords and locations at pretty much every major airport in the world
While some airports are not accounted for, an impressive number are, including Bangkok’s Suvarnabhumi and Surat Thani airport in the south, where somewhat predictably for Thailand the password is “12345678”.
TIP: There are some dangers with using public Wi-Fi. It is probably not a good idea to use unsecured wireless networks at airports or other public places to share confidential information or to do online banking.
Also make sure your antivirus software is up to date. You may also consider using a VPN to boost security when using public Wi-Fi.