How much does international FaceTime cost?

Apple does not charge to use FaceTime to another country. Data rates would still apply from your internet/cell provider the same as if you used the data domestically. The receiver of the call may also have limits on how much data they can use.

There is no charge to use FaceTime. FaceTime uses data, either cellular or WiFi. It doesn't matter whether you're FaceTiming someone sitting next to you or on the other side of the world.

All FaceTime calls are free.

I FaceTimed from a Caribbean country to a family member in the US and didn’t get charged a penny