In which varieties of English is 't' in 'often' silent? [duplicate]
Solution 1:
Pronunciation of ‘often’ does not inherently depend on dialect. See: How should "often" be pronounced? (possible duplicate).
Solution 2:
I'd say that it's a dialect thing. I often hear people pronounce the 't' in 'often'. It annoys me, because I grew up with it silent, but it's not actually wrong in any sense.
I'm British, by the way. I hadn't noticed it (the pronounce 't', that is) being an American use at all (but now I probably won't be able to stop noticing it). It seems to be increasing in Britain, though.