About 8 hours.
how long is a flight between Johannesburg to brisbane?
A flight from Islamabad to Riyadh is approximately 4 hours and 20 minutes.
9h with no stops
20 minute
to zanzibar
to where
Johannesburg Intl to Windhoek Intl: 2 hours
about 7 hours, but there is no direct flight between those cities.
9:00 hours
1 hour
About 21 hours
About 10 hours.