Currently you can stream Interstellar with FXNow, a streaming service for US audiences. There are loads of great movies you can stream with this service (we've included some below). If we find any more streaming options for Interstellar then we will update this page.
If you don't have access to FXNow then you can still buy or rent Interstellar to watch online from a few different digital platforms including Redbox, Prime Video, FandangoNOW, Google Play Movies and VUDU. It'll cost you as little as $2.99 to rent the movie and $7.99 to buy the documentary.