Almost all the most polluting routes used by private jets in Europe pass over France. Most of these routes are between London and Paris, Nice or Geneva. This is all the more problematic since private jets have been found to be 10 times more carbon intensive than commercial airliners, on average.
According to a report titled "Private jets: can the super-rich supercharge zero emission aviation?" from the Transport & Environment campaign group, CO2 emissions from private jets in Europe increased by almost one third (31%) between 2005 and 2019, proportionally rising faster than commercial aviation emissions.