Currently you are able to watch "Smallville" streaming on Amazon Prime Video.
There are no options to watch Smallville for free online today in India. You can select 'Free' and hit the notification bell to be notified when show is available to watch for free on streaming services and TV.
If you’re interested in streaming other free movies and TV shows online today, you can:
The origins of the world’s greatest hero–from Krypton refugee Kal-el’s arrival on Earth through his tumultuous teen years to Clark Kent’s final steps toward embracing his destiny as the Man of Steel.