Preheat oven to 400. Line a baking sheet with parchment paper or a silicone mat.
In a large mixing bowl, whisk together the flour, oats, flax, baking powder, and salt. Cut butter into small cubes and add to the dry ingredients. Use a pastry blender to cut the butter cubes into the flour mixture until it resembles coarse crumbs. Stir in the dried apricots.
In a small mixing bowl, whisk together the honey, ¾ cup buttermilk, egg, and vanilla. Add the wet ingredients to the dry ingredients and stir with a wooden spoon until just combined.
Transfer dough to a well-floured surface and form two circles ¾" thick. Use a floured knife to cut each circle into 6 wedges. Transfer scones to the baking sheet, leaving at least 1" between each.
Use a pastry brush to brush scones with the remaining buttermilk. Bake 12-16 minutes, until golden brown around the edges.