Coimbatore to Munnar bus timings
TNSTC-Coimbatore runs two schedules to Munnar from Coimbatore and they starts from Ukkadam bus stand.
From Ukkadam: 8:15 AM and 2:25 PM.
Alternatively, one can take a bus to Udumalpet from Coimbatore and then we can take a Munnar bound buses..
Munnar timings at Udumalpet: 1:30 AM, 2:15 AM, 5:30 AM, 6:30 AM, 7:00 AM, 7:40 AM, 8:40 AM, 10:40 AM, 11:30 AM, 1:30 PM, 3:15 PM, 4:40 PM, 7:30 PM, 10:00 PM.
KaSRTC has a Rajahamsa starting from Bangalore and it runs via Coimbatore, Pollachi, Udumalpet. It starts from Coimbatore at 4:45AM(SETC BS), 6:15 AM(Pollachi) and 7:00 AM(Udumalpet).
Disclaimer: All the above timings are got from the timing list present at the respective bus stations Ukkadam and Udumalpet.