In order for you to play SimAirport on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows 7+
Processor (CPU):
Intel i5/i7+ or AMD-FX+
Memory (RAM):
4 GB RAM
Graphics Card:
Nvidia GeForce GT 550 or AMD Radeon HD 5000 - Integrated GPUs might not work
DirectX:
Version 11
Sound Card:
Any
In order to play SimAirport on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows 8+
Processor (CPU):
Intel i5/i7/i9 8th gen+ or AMD-Ryzen
Memory (RAM):
8 GB RAM
Graphics Card:
Nvidia GeForce GTX 970+ or AMD RX470+ - Integrated GPUs might not work
DirectX:
Version 11
Sound Card:
Any