Frequent updates like the recent City Update 14 (Netherlands and Belgium) or California updates are provided at no extra cost to enhance terrain and landmark detail.
For those who already own the game or access it via Game Pass, Microsoft provides massive amounts of content for free: Microsoft Flight Simulator gratuito
Microsoft Flight (2012) was a dedicated free-to-play spin-off. While its official multiplayer servers were shut down in 2014, the core single-player experience remained available as a free download for some time, though it is no longer officially supported. Free Content Updates Frequent updates like the recent City Update 14