This is the easiest way and a car is essential if you want to make the most of the surrounding countryside.
Rennes International Airport - one and a half hours drive
Flybe has direct flights to here from a number of airports including London, Southampton, Exeter, Birmingham, Manchester, Dublin, Cork, Paris and Amsterdam. You can find the full list on the Rennes International Airport site.
Dinard Airport - two hours drive
Dinard airport is serviced by Ryanair.
Into Laval from Paris Montparnasse (approx an hour and a half journey time).
Into Le Mans from Paris or Paris CDG Airport.
There are a number of ferryports in France which you can travel from the UK. The most convenient is is Caen which is around 2 hours drive, then Le Havre, around 2 and a half hours, Dieppe, three hours and finally Calais which is four and a half hours drive.
By car from Folkstone to Calais.