Ans: around 40 minutes.
The distance between Okhla and Kashmiri gate is 23 km
It totally depends on the traffic if they traffic is medium it will take around 55 minutes.
local bus service is also available there.It will take more than one hour by bus.
The aerial distance between the Okhla and Kashmiri Gate is 22.4 km , The local bus will take more than one hour the bus number 403,445 is available from Okhla Extension , Abul Fazal Enclave