You can watch the TV show "Supernatural" on several streaming platforms and digital stores:

• Streaming on Netflix (including Netflix Standard with Ads) and TNT in the US

• Streaming on Amazon Prime Video (including Amazon Prime Video with Ads) in the UK and other regions

• Available for purchase or download on Amazon Video, Apple TV, Fandango at Home, Sky Store, and Microsoft Store

• YouTube TV offers a free trial to watch "Supernatural" as part of its live TV and cable network streaming

These options cover both subscription streaming and buying episodes or seasons digitally. Availability may vary by region, so checking your local streaming services is recommended. In summary, the main platforms to watch "Supernatural" are Netflix and Amazon Prime Video for streaming, and Amazon Video, Apple TV, and similar services for purchase or rental