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

Return flights

19 Sep - 26 Sep	Nouvelair	direct
18 Sep - 03 Oct	Nouvelair	direct
18 Sep - 28 Sep	Nouvelair	direct
18 Sep - 05 Oct	Nouvelair	direct
05 Sep - 09 Sep	Vueling Airlines
12 Sep - 25 Sep	Nouvelair	direct
09 Sep - 09 Sep	Vueling Airlines
05 Sep - 08 Sep	Vueling Airlines
03 Sep - 09 Sep	Vueling Airlines
05 Sep - 08 Sep	Nouvelair	direct
09 Sep - 07 Oct	Transavia France
18 Sep - 30 Sep	Nouvelair
18 Sep - 30 Sep	Tunisair	direct
26 Sep - 26 Oct	Tunisair	direct
09 Sep - 07 Oct	Tunisair	direct

Also check the deals for one-way flights from Tunis to Brussels 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 Brussels in September from $191

Return flights