What are some alternatives?
When comparing Flaticon and Google Fonts, you can also consider the following products
Font Awesome - Font Awesome makes it easy to add vector icons and social logos to your website. And version 5 is redesigned and built from the ground up!
Font Squirrel - Font Squirrel scours the internet in search of FREE, highest-quality, designer-friendly, commercial-use fonts and presents them for easy downloading. We don't have the most, but we do have the best.
IcoMoon - IcoMoon is an icon management tool that is build to provide iconography.
Typekit - This will change the way you design websites. Add a line of code to your pages and choose from hundreds of web fonts. Simple, bulletproof, standards compliant.
IconPharm - IconPharm is a library of open source icons with recoloring and resizing tools.
Iconfinder - Iconfinder is the leading search engine and market place for vector icons in SVG, PNG, CSH and AI format..