Go through your results for flights to Ajaccio in France with Netflights. Although Brussels Airlines usually has the best prices, it's best to double check what's available for your travel dates.
Flexible on dates? Conducting your search by month allows you to compare prices to Ajaccio throughout the year. Accommodation prices will also be higher at this time of year.
So, if the flights to Ajaccio don't work for you, you could always try searching for flights to other airports in France.
For even more options, check what other airports you could fly to Ajaccio from. You might be able to make a saving by going from a different airport or city.