From St Malo via Rennes & Nantes. Approximate driving time is 4 hours.
From Channel ports via Rouen, Tours, and Poitiers. Approximate driving time is 7 hours.
Birmingham or Stansted to Poitiers with Ryanair
Bristol or Gatwick to La Rochelle with EasyJet
Stansted or Dublin to La Rochelle with Ryanair
Birmingham, Manchester or Southampton to La Rochelle with Flybe
Bristol or Luton to Bordeaux with EasyJet
Gatwick to Bordeaux with British Airways
Car hire is available at these airports, and both Poitiers and La Rochelle are just under an hours drive. Bordeaux is under 2 hours drive.
London St Pancras and Ebbsfleet International to Poitiers via Lille or Paris on Eurostar and TGV services.