You can definitely grow Venus FlyTraps outdoors year round. You'd want to mulch for winter protection, but you're a zone warmer than I am.
I intend to, but I made the purchases without doing all of the research. I'm going to put a small LED light in my kitchen to keep the non hardy ones through the winter.Very nice specimens Sub! Can't say I'm all that surprised they survived the winter, despite being subtropicals...both are pretty death-proof IME.
That being said you'd get some really good year round growth bringing them in for the winter. Probably wouldn't need more than a warm windowsill with some decent sunlight. JMO.