[jbrantly]

According to this[0], IE10.

0. http://caniuse.com/#feat=flexbox

[kemayo]

Sort of? I mean, note that table skips IE10 entirely.

As I understand it, IE10 implements a different, somewhat incompatible version of the flexbox spec. You can see all the changes they made for 11 here: https://msdn.microsoft.com/library/dn265027(v=vs.85).aspx