Seasons 1 and 2 have been released on DVD and Blu-ray in the US, UK, France and Australia.

Season 3 has been release in Australia only.

Season 3 and 4 are due to be released by Universal in the US on the 14th August 2018.

For both season 1 and season 2 the releases in all countries have been identical.

Blu-rays are confirmed to have the following content:

• All 13 episodes
• Gag reel
• Cast auditions (A. Schull, B. Sukowa, T. Stashwick)
• Emily Hampshire improv speech
• 6 webisodes (those that are considered canon)
• Deleted scenes from episodes 1×01, 1×02, 1×05 and 1×08

The UK season 2 Blu-rays are confirmed to have the following content:

• All 13 episodes
• Gag reel
• 13 Inside 12 Monkeys Season 2 clips (episodes 2×01 to 2×13)
• 5 webisodes (‘Pre-Apocalyptic’, ‘The Traveler’, ‘The Witness’, ‘The Witness Promo’, ‘Alone’)
• 4 podcasts (= episode commentaries) for episodes:
  • 2×02 (T. Matalas, S. Tretta, A. Stanford, E. Hampshire)
  • 2×05 (T. Matalas, A. Schull, E. Hampshire, T. Stashwick)
  • 2×12 (T. Matalas, S. Tretta, A. Stanford, A. Schull, E. Hampshire)
  • 2×13 (T. Matalas, A. Standford, A. Schull)
• Deleted scenes from episodes 2×01, 2×02, 2×03, 2×05, 2×10, 2×11 and 2×13

Check here for more details.