Range circle for flight planning

For flight planning. It would be awesome to have a flight circle based on location, aircraft type and distanced travels over a timer period in hours.

Example:

Let’s say you want to fly from London using the A320 but only have 3 hours to spend flying. A circle on the map would show how far you get based on these criterias.

Here is an example image from a program coded in python as reference showing a 3 hour flight range based on ground speed of 430