JOHANNESBURG - Recently, some flights have been cancelled or rerouted due to bad weather.
But Mother Nature isn't entirely at fault, as certain flight procedures which needed updating lapsed.
WATCH: Airline body warns of ongoing flight disruptions at key airports
Air Traffic and Navigation Services says all will be sorted by July next year.
ATNS is confident things should go reasonably smoothly during the G20 leaders' summit and the festive season.
- eNCA's Heidi Giokos reports.