I find myself basing my trips on whenever there's a cheap flight, rather than setting a specific date to have a vacation.
However, it makes it hard for me to do this if I can't search for the cheapest flights regardless of date.
Is there a way to do this?
I'm from Australia and Australia-specific or international suggestions will both work. However, for the sake of this question as a generic one, I would ask for you to leave any tools you know of regardless of origin, so it might help future viewers.