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

Return flights

10 Sep - 20 Sep	Vueling Airlines
11 Sep - 20 Sep	Vueling Airlines
22 Sep - 30 Sep	Transavia France
25 Sep - 06 Oct	Tunisair
28 Sep - 05 Oct	Tunisair
23 Sep - 30 Sep	Transavia France
10 Sep - 17 Sep	Vueling Airlines
08 Sep - 20 Sep	Tunisair
27 Sep - 05 Oct	Transavia France
09 Sep - 20 Sep	Transavia France
29 Sep - 06 Oct	Transavia France
15 Sep - 18 Sep	Air Europa
19 Sep - 21 Sep	Air Europa
20 Sep - 17 Oct	Transavia France
15 Sep - 14 Oct	Tunisair
21 Sep - 24 Sep	Transavia France
29 Sep - 06 Oct	Tunisair	direct

Also check the deals for one-way flights from Tunis to Lisbon 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 Lisbon in September from 200€

Return flights