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

Return flights

23 Sep - 30 Sep	Nouvelair	direct
30 Sep - 04 Oct	Ryanair
23 Sep - 25 Sep	Nouvelair
30 Sep - 04 Oct	Nouvelair	direct
25 Sep - 30 Sep	Ryanair
20 Sep - 27 Sep	Nouvelair
22 Sep - 28 Sep	Volotea
20 Sep - 20 Sep	Nouvelair

Also check the deals for one-way flights from Lille to Tunis 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 Lille to Tunis in September from 250€

Return flights