Aces High is probably the most frugal online multiplayer game in the industry. Windows 10 telemetry should be more of a concern.
The exact amount we use floats as it will depend on many factors. How many other players are around you is the biggest factor. It could range from 60KB/hour to,..maybe around,....250KB/hour.
About the only time we use a lot of data bandwidth is patch time. A large patch can be around 350MB. Still pretty frugal compared to other applications.