Spotify, Soundcloud and YouTube have all partnered with Songkick to provide arist tour dates into their profiles and pages.

Artists can signup to the Songkick Tourbox (tour date management platform) where you can start managing your Songkick artist page and edit dates (as well as sync all your other online profiles so you only have to enter once to publish everywhere).  Once your tour dates are on Songkick, they will automatically appear on your artist page.