On youtube
Where Can I Watch Winx Club Season 3 In English?
Its on t.v now
On 4kids.tv and click "WATCH" and then "CHANNELS" and then winx club and choose season 3 and then you can pick your episode.
Go on 4kidstv.com and you'll see that bar on top of the whole page press the arrow if you don't see the winx on the first page when you do see them it going to be Bloom as the pic