How do you create a 3D arcs that look like flight paths?

[ToddStanwood]

Hi,

Does anyone know how you create 3D flight paths that look like the arcs in the image below:

Click on link or copy paste in a browser to see the live map: 

Train travel times from London | Aspectum 

We use ArcGIS Pro and ArcGIS Online.

Thanks,

Todd

[Dale_Honeycutt]

This is what is called a Spider Diagram.  You can generate these using the Generate Origin-Destination Links  geoprocessing tool.  You'll need to use the Geodetic option for the Line Type parameter as this will produce the 'great circle' lines shown in your graphic.