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.
New users can often find promotional trials, such as a 14-day trial for $1 or even free codes bundled with hardware purchases (like ASUS or MSI laptops). Microsoft Flight Simulator gratuito
For those who already own the game or access it via Game Pass, Microsoft provides massive amounts of content for free: Frequent updates like the recent City Update 14
If you are looking for a simulation that is truly $0, consider these options: Microsoft Flight Simulator - Xbox.com Microsoft Flight Simulator gratuito