One service will provide a link between Bergerac and Périgueux, another will go between Bergerac, Eymet and Marmande, with a third service linking Bergerac to Issigeac and Villeneuve-sur-Lot.
All three services go via the SNCF station at Bergerac.
Ticket prices have increased on last year to 2,30€ (up from 2€) and you need to reserve your seat the day before your trip, and then ring before 17h.
One thing to be aware of is if you want to travel using the bus service on Saturday, Sunday or Monday then you need to call before 17h on the Friday.
More information is available on the Bergerac Airport website.
The following .pdf timetables will help with your planning: