Im just trying to figure out what will be cheaper because when we get there we are going to be gradually making our way down south so will it be more expensive to get all those planes?
I’ll look for a site that calculates tolls, but the distance is 910 miles . You stay in France the entire way (coming a few miles from the German border). You cross into Switzerland at Basel and leave Switzerland into Italy at the small town of Chiasso (near Lake Como).
Google says 14.5 hours of driving time, but that would average out to 62 mph (which I find difficult to believe considering it includes a ferry ride and mountain ranges).
I suspect that your tolls and your ferry crossing will be you major cost drivers. If you can ballpark fuel you will probably be allright.
The train is normally £145 for two people and one car to cross the channel (one way) , but can be as low as £85 at unusual hours (between 23:00). The tolls and fuel estimate for the trip (according to via Michelin) is £161 one way.
A ferry site suggests £76 GBP for a one way crossing for two people and a car from Dover to Calais. It is considerably slower than the train.
====================
Another website suggests that many cost conscious Brits prefer to drive through Belgium and Germany instead of France. The distance is longer, but the tolls are lower.

This is impossible to answer without data for your vehicle’s average MPG and the length of the route.
References :
I’ll look for a site that calculates tolls, but the distance is 910 miles . You stay in France the entire way (coming a few miles from the German border). You cross into Switzerland at Basel and leave Switzerland into Italy at the small town of Chiasso (near Lake Como).
Google says 14.5 hours of driving time, but that would average out to 62 mph (which I find difficult to believe considering it includes a ferry ride and mountain ranges).
I suspect that your tolls and your ferry crossing will be you major cost drivers. If you can ballpark fuel you will probably be allright.
The train is normally £145 for two people and one car to cross the channel (one way) , but can be as low as £85 at unusual hours (between 23:00). The tolls and fuel estimate for the trip (according to via Michelin) is £161 one way.
A ferry site suggests £76 GBP for a one way crossing for two people and a car from Dover to Calais. It is considerably slower than the train.
====================
Another website suggests that many cost conscious Brits prefer to drive through Belgium and Germany instead of France. The distance is longer, but the tolls are lower.
References :
http://www.aferry.to/
http://www.viamichelin.com/viamichelin/gbr/tpl/hme/MaHomePage.htm
http://www.eurotunnel1.com/direct/booking/fare.asp