No font in Google fonts does, for instance. At least from their own little demonstrator. There is https://github.com/googlefonts/noto-emoji https://github.com/g

No font in Google fonts does, for instance. At least from their own little demonstrator. There is https://github.com/googlefonts/noto-emoji https://github.com/googlefonts/noto-emoji Noto Emoji which can render the flags but you need to build it yourself