Richard Sofer, commercial director, told TTG the travel giant had “seen demand slightly higher” than originally forecast.
The operator put a “modestly sized” programme to Hammamet on sale in January with flights operating from May 1.
It followed the Foreign Office updating its travel advice last year, permitting travel to the majority of the previously popular country.
When asked whether the interest could see an expansion of Tui’s programme in Tunisia, Sofer said it would “continue to respond to customer demand”.