Where to watch The 100 Season 4 in Australia
The 100 season 4 is streaming in Australia on Prime Video (subscription) and HBO Max (subscription), and free on 9Now. You can also buy it on Apple TV from $29.99, Fetch TV from $34.99 and Prime Video Store from $19.99.
We may earn a commission when you sign up through our links. How we make money.
Stream (subscription)
Watch now on Prime VideoPrime Video
Subscription
$12.99/mth (Amazon Prime Monthly plan) · Added 9 October 2026
Stream now on HBO MaxHBO Max
Subscription
From $11.99/mth
Free
Watch 9Now on 9Now9Now
Free with ads
Buy or rent
Stream now on Apple TVApple TV
Buy
Buy from $29.99 a season
Get Fetch on Fetch TVFetch TV
Buy
Buy from $34.99 a season
Rent or buy on Prime Video StorePrime Video Store
Buy
Buy from $19.99 a season
Availability checked 16 November 2026.
What happens in “Praimfaya”
It's a race against the end of the world as Praimfaya arrives forcing our heroes to make impossible decisions to ensure their survival.
Episode summary: TMDB.
Before you watch
- It is the season finale of season 4, so watch episodes 1 to 12 first.
- It runs about 41 minutes.
- Directed by Dean White, written by Jason Rothenberg.
- TMDB users rate it 8.3 out of 10 (35 votes).
The 100 trailer
The official trailer for the series (no preview of this episode has been published).
Play video: The 100 trailer
Cast and crew of this episode
- Director
- Dean White
- Writer
- Jason Rothenberg
- Guest stars
- Tasya Teles as EchoTati Gabrielle as GaiaAdina Porter as IndraLola Flanery as Madi GriffinChelsey Reist as Harper McIntyre
Credits: TMDB.
More from The 100 Season 4
Every episode of Season 4The 100 episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.