Kerala State Road Transport Corporation is operating bus services from Munnar to Alappuzha and vice versa. There are buses starting from KSRTC Bus Station, Munnar. Detailed timings are available in Aanavandi, Click here
Online reservation will be available soon @ KSRTC Online & KURTC Online websites
The journey will take around 6-7 hours and goes via Ernakulam, Aluva, Perumbavoor, Kothamangalam & Adimaly.