Yes, FLAGONS is a Scrabble word!

Letter values in Scrabble US: F 4, L 1, A 1, G 2, O 1, N 1, S 1.

Is it a valid word?

FLAGONS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a large metal or pottery vessel with a handle and spout; used to hold alcoholic beverages (usually wine)