It is of course affecting any overflights. Although for many itineraries that normally fly over it, France can effectively be avoided at the cost of longer itineraries and busier air corridors, again, this is not a French strike but a European one and multiple countries are due to be affected. Not in all of them, however, do prospective strikers need to announce their strike so there is some uncertainty about the exact scope of the disruption to be expected. I expect that airlines will know more by Tuesday.