If you are a big fan of flat WordPress themes, here we have a great list of some professional looking free flat WordPress themes. The demand of high quality Flat WordPress themes are on a pick these days because everyone wants their site to stand out.
Flounder
Flounder is a flat, minimally styled theme for bloggers which features colorful support for post formats and a clean, responsive layout.
Writr
Writr is a minimalist, content-oriented tumblelog theme perfect for your personal blog. It comes packed with 6 different color schemes: turquoise (default), blue, green, grey, purple, and red. With it’s modern look and attention to crisp typography, Writr lets your readers focus on the content.
Bearded
A responsive CSS3 and HTML5 blogging and portfolio theme. It supports all post formats and has layout, and color options built into the theme customizer. The theme also supports the Custom Content Portfolio plugin, giving artists and other creative people the ability to share their work.
Moments
A clean responsive theme for personal blogs.
StanleyWP – Twitter Bootstrap WordPress Theme
StanleyWP is our first FREE Twitter Bootstrap WordPress theme! Just because it is free doesn’t mean it lacks features though. StanleyWP is a cute theme created to showcase your work in a simple way.
Blogly
Blogly is a responsive personal blog theme which is responsive and uses the theme customizer so you can change colors, upload a logo and background image. You can upgrade to a pro version which has more cutomization options, support and custom widgets for social media, dribbble, flickr and advertising.
Flato
Flato is a simple blogging theme with a flat design.