Local low-cost airline FlySafair's main reservation system came back online on Friday night, after an outage began on Wednesday morning due to technical problems with its service provider in the US.
The airline’s website and online check-in facilities were now back to being fully operational.
"We’d just like to thank our customers and partners who have been so supportive through this and acknowledge our teams who have worked tirelessly to get us back up again."
Earlier in the week, a major international airline reservation system called Radixx International suffered what they termed a "major technical event" which brought down the booking systems of several airlines across the world, including that of FlySafair.
"Since the system went offline, our tenacious local teams have been working through the night for the past 48 hours to bring a backup system online," Kirby Gordon, chief marketing officer at FlySafair said on Friday
This mini booking platform allows customers to make basic reservations for one-way flights departing within the next 24 hours. All fares include a 20kg checked in luggage allocation.
"Unfortunately, this backup system is very basic and doesn't facilitate changes to existing reservations or online check-in," Gordhan said.
The new system allows for dynamic pricing, so the flat fee that was available on Thursday is no longer applicable.
The systems that manage airport administration are separate, so that was not disrupted.
*This story has been updated to reflect that the FlySafair booking system is back online