I saw the headline and thought this was about Overflight Fees, which are the fees a country charges just for passing through their airspace.

For example, it cost $950 to travel over Afghanistan in 2020. [1]

[1] https://simpleflying.com/overflight-fees/

Faa’s fees for the US: https://www.faa.gov/air_traffic/international_aviation/overf...