Delta Airlines have round trip airfares travelling from Chicago (ORD) to Johannesburg (JNB) for $680 including taxes and fees. This makes one stop. Google flights says 12% increase likely in 11 hours, so don't wait. You have 24 hours to change your mind and cancel.
Departs ORD: Nov 8; Jan 22-23, 25-26, 28-31; Feb 2, 4-5, 7-8, 11, 20-21, 25-27; March 5, 20, 21
Returns: 7 day minimum stay
Use dates and book it on Expedia [expedia.com]
or Delta Airlines [delta.com]
directly. Bundling hotel with airfare will save money.
link to recent travel deals