I would put that at 8 hours. Unless Spain is especially badly connected, you are quickly at least 2 hours away from the airport. So that would be at least 4 hou

I would put that at 8 hours. Unless Spain is especially badly connected, you are quickly at least 2 hours away from the airport. So that would be at least 4 hours slow transit + flight time. Of course, by population density, you are probably 5 hours away from most people in Europe.