Do what I do. Leave a day before your missus and the kids, enjoy a nice solo drive through France without having to worry about the kids getting restless. Stay in a decent town that evening, enjoy a bottle of wine and nice meal in the town square watching the world go by then, well rested, drive to the airport the next morning to pick the brood up before a short hop to your destination.
All you need is to plan it right and have a compliant other half who doesn't see undertaking a couple of flights with young kids in tow as a problem. The advantages are you can get further south for the better weather and you get some valuable 'me' time
Now there's a plan
Fire up E500. Set the controls to the heart of the sun. Depress accelerator. I like it.