Rennes and Nantes are accessible from some UK airports. The flight time is approximately 1.5 hours.The following flight search sites may be useful: cheapflights/ skyscanner. traveljungle. If you are flying to France, you will probably want to hire a car. The following sites may be useful - carjet and premiercarhire. The nearest Ferry ports are Caen and St.Malo (1.5 hours), Le Havre (2 hours), Dieppe (3 hours) and Boulogne (4 hours).DFDS operate from Portsmouth and Newhaven to Le Havre and Dieppe and from Dover to Boulogne. Brittany Ferries operate from Portsmouth to Caen and St Malo.