About 3 hours and 25 mins according to this http://www.independent.co.uk/news/science/tim-peake-return-when-is-he-coming-back-from-space-what-time-where-tv-channel-watch-a7087766.html
///After bidding farewell to the rest of the crew the trio will climb aboard the tiny Soyuz space capsule, closing the door at 03:35am BST and undocking from the space station at 06:52am BST.
They will then begin their journey home hurtling towards Earth at speeds of 28000 km/h (known as Mach 25) before slowing down and re-entering the atmosphere. The capsule will land in a remote corner of the Kazakhstan Steppe at around 10:15 BST.///
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.