If you prefer bus journey to Munnar, then frequent buses available from Cochin / Ernakulam. You can catch bus from Ernakulam KSRTC bus stand. Advance booking is not available.
Private Buses are also available but not frequent. Most of them are operating during Morning and Evening.
Cochin to Munnar Bus Ticket Rates will be approx. INR 150 per head.
Route to Munnar is with winding roads. Total kilometer distance is 130 kms. It will take 4.30 to 05 hours to reach munnar in Bus.