OR Tambo International Airport
Information Desks : Tel: +27 (0)11 921 6262.
There are two desks - one in the arrivals hall of Terminal A and one in Terminal B.
They are advertised as being open 24 hours a day, seven days a week, but I was told they operate from 05h00-22h00!
I couldn't fault the staff and found them to be really helpful and knowledgeable. No matter what I wanted to know, I got a very informed reply!
You can check flight times and details by:
i: Calling +27 (0)86 727 7888 for ACSA's automated flight-information service
ii: Calling the ACSA information desk, open 24 hours a day, seven days a week, on +27 (0)11 921 6262;
iii: Using your mobile phone to send an SMS containing the flight number to the number 35007, in reply to which you will receive up-to-date flight details, or
iv: Checking live arrivals and departures online.