Thai Airways offers flights from Johannesburg to Bangkok, Thailand, and onwards to many other international destinations. Here's a photo of a Thai International Airways plane parked at Johannesburg O.R. Tambo International Airport.
Thai Airways offers flights from Johannesburg to Bangkok on Mondays, Wednesdays & Saturdays; which are scheduled to leave JNB at 13h40 and arrive in BKK at 05h55.
Thai Airways offers flights from Bangkok to Johannesburg on Mondays, Wednesdays & Saturdays; which are scheduled to leave BKK at 01h15 and arrive in JNB at 07h30.