Originally Posted by ISTFlyer

₺5.20 per ride. Slightly less than 1 USD. Only Istanbulkart is accepted as a payment method for H-2. You could easily purchase an Istanbulkart from the machines.
H-2 and İST-18 take the same route. The only difference is that one is a municipality bus and the other one is a coach bus.



I don't think that you would wait more than 20 minutes. Weekday mornings are usually empty but there is also a small possibility that you could wait more than 20-25 minutes.