My 'best' beat the airlines flight (or indeed any alternative):
Popham to St.Cyr (Paris), four up. 1h50 minutes (so about GBP100 in fuel and a tenner for the landing). No stop in Rouen as the customs guys weren't there so he just closed my flight plan as I went through the overhead. Merci!
Same flight with new plane (six up) takes just over an hour, and costs less than GBP40 including the landing.
Cheers, Sam.