Welcome to the community!
MSFS (Microsoft Flight Simulator) has the entire world modeled-not just certain areas. You can fly in Antarctica, Norway, anywhere you can think.
There are a few airports missing due to bugs with the data that they have. However, you will likely find the airport you are looking for 
If you have any other questions, feel free to post it in a subcategory of General Discussion & Community Support
There is this (slightly outdated) as well to view the handcrafted airports [GUIDE] Asobo Handcrafted Airports
If you are on PC there are tons of freeware airports as well on Flightsim.to 