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

Return flights

23 Sep - 30 Sep	Nouvelair	direct
20 Sep - 23 Sep	Nouvelair	direct
20 Sep - 30 Sep	Nouvelair	direct
23 Sep - 18 Oct	Nouvelair
20 Sep - 27 Sep	Nouvelair	direct
20 Sep - 14 Oct	Nouvelair
20 Sep - 14 Oct	Nouvelair	direct
20 Sep - 15 Oct	Nouvelair
20 Sep - 05 Oct	Nouvelair
23 Sep - 18 Oct	Nouvelair	direct
19 Sep - 22 Sep	Nouvelair
22 Sep - 29 Sep	Air France
30 Sep - 14 Oct	Nouvelair	direct
23 Sep - 07 Oct	Nouvelair	direct
30 Sep - 07 Oct	Nouvelair	direct
20 Sep - 07 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 107€

Return flights