AirHint found the following cheapest return flights from Tunis (TUN) to Basel (BSL) in September 2025 (see full year).

Return flights

09 Sep - 11 Sep	Vueling Airlines
05 Sep - 11 Sep	Vueling Airlines
06 Sep - 11 Sep	Nouvelair
04 Sep - 11 Sep	Nouvelair
12 Sep - 13 Sep	Vueling Airlines
12 Sep - 23 Sep	Vueling Airlines
09 Sep - 13 Sep	Vueling Airlines
09 Sep - 23 Sep	Vueling Airlines
05 Sep - 13 Sep	Vueling Airlines
05 Sep - 09 Sep	Vueling Airlines
27 Sep - 11 Oct	Nouvelair	direct
16 Sep - 04 Oct	Nouvelair	direct
27 Sep - 04 Oct	Nouvelair	direct
20 Sep - 04 Oct	Nouvelair	direct

Also check the deals for one-way flights from Tunis to Basel in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Tunis to Basel in September from $232

Return flights