Go through your results for flights to Tunis in Tunisia with Netflights.
Flexible on dates? Conducting your search by month allows you to compare prices to Tunis throughout the year. Accommodation prices will also be higher at this time of year.
So, if the flights to Tunis don't work for you, you could always try searching for flights to other airports in Tunisia.
You can also broaden your search by looking at more than one departure airport. Have a look around – you might be able to save by flying from a different airport or city.