As of now (and recently), the original Fullmetal Alchemist anime, as well as Brotherhood are both available on Netflix in both subbed and dubbed formats. Fullmetal Alchemist Brotherhood is also available on Hulu in both subbed and dubbed formats.
19 January 2017
Fullmetal Alchemist Brotherhood is now available on Hulu again in both subbed and dubbed format. However, Funimation no longer has the rights to the original Fullmetal Alchemist anime, and as such is no longer available for streaming and was removed from Funimation's website as well as Hulu and Netflix.
On this day, Funimation announced that their license for Fullmetal Alchemist: Brotherhood and Fullmetal Alchemist The Movie – Conqueror of Shamballa would be expiring soon. Funimation licenses these rights for a limited time, after which they revert to the original Japanese license holder.
Fullmetal Alchemist: Brotherhood: expires March 31, 2016
Fullmetal Alchemist The Movie – Conqueror of Shamballa: expires March 31, 2016
After these dates, these titles will be removed from their streaming service on Funimation.com, and other streaming services (such as Hulu.com) and they will not be reprinting any more home video products. - Source