Assuming two players both have a flush, the winner is determined by the player with the highest ranked flush card (Aces are high). Assuming both players share the same high card, the second highest card is consulted and so on.
When two or more flushes go to battle, the flush with the best high card wins. For instance, A&f 9&f 6&f 2&f 3&f beats K&f T&f 6&f 2&f 3&f, and J&` T&` 7&` 4&` 2&` beats 9&` 8&` 7&` 4&` 2&`. If two flushes have the same high card, the next highest card wins.