The closest airport is Bordeaux (93km/58miles away).
The best option is to drive from the airport which is an easy and direct route mainly on the A10, which takes about 1 hour and 30 minutes (dependent on traffic).
Bordeaux airport has a large range of direct flights from the UK: Glasgow, Belfast, Manchester, Bristol, and the main London airports Luton, Stanstead and Gatwick
Here is a website of updated flight schedules from the uk
https://thegetawaylounge.co.uk/blog/which-uk-airports-fly-direct-to-bordeaux