Brandon Flynn plays Justin Foley on 13 Reasons Why- Instagram account This image appears in the gallery:13 Reasons Why Cast Instagram Handles From Dylan Minnette To Brandon Flynn 6. Brandon Flynn plays Justin Foley on 13 Reasons Why- Instagram account Instagram handle: @flynnagin11 Followers: 5.7 million 11 images See the full gallery: 13 Reasons Why Cast Instagram Handles From Dylan Minnette To Brandon Flynn