There are no direct flights, trains or buses between Kolkata to Ooty but you can reach Ooty via Bangalore very easily.
You can take a flight from Kolkata to Bangalore and then a bus/taxi from Bangalore to Ooty. Another flight option available to you is from Kolkata to Coimbatore and then a taxi to ooty.For an economic journey you can take Hwh Ypr Duronto train 12245 from Kolkata then take KSRTC from Bangalore.
Take a look at our Train Search and Flight Search to find out options and availability for your travel!
You can see ixigo's Kolkata to Ooty page !