The team - which kicked off the season with a 41-13 victory against Wales at Twickenham on Saturday - was scheduled to fly back to South Africa on Sunday night to begin preparations for the Castle Lager Incoming Series.
The flight was cancelled late on Sunday night following several delays, which forced the team to remain in London for an extra night.
The squad is now set to fly to SA late on Monday afternoon and touch down in Johannesburg in the early hours of Tuesday morning.
As a result of this, Springbok coach Rassie Erasmus will announce his squad for the Castle Lager Incoming Series on Tuesday.