Small airport.  No duty free available.  Small restaurant.  Pay and display car park.

La Rochelle Airport mini guide

Guide point Details
Public Transport:

Buses are available Monday - Saturday - running from the airport to the center of La Rochelle, and vice-versa, in about 10 minutes.
Facilities (general):

There is a bar-restaurant at the airport.
Facilities (disabled):

Wheel chairs are available upon request at the airport. Restrooms with handicap access.
Address: Aéroport La Rochelle Île De Ré, Rue Du Jura, 17000 La Rochelle
Switch board number: +(33) 05 46 42 86 70
Tourist information website: http://www.larochelle.aeroport.fr/EN/index.html