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

Return flights

19 Sep - 02 Oct	Tunisair	direct
10 Sep - 16 Sep	Vueling Airlines
10 Sep - 11 Sep	Vueling Airlines
23 Sep - 30 Sep	Transavia France
05 Sep - 09 Sep	Vueling Airlines
05 Sep - 11 Sep	Vueling Airlines
12 Sep - 14 Sep	Vueling Airlines
05 Sep - 08 Sep	Vueling Airlines
09 Sep - 11 Sep	Vueling Airlines
09 Sep - 09 Sep	Vueling Airlines
03 Sep - 09 Sep	Vueling Airlines
02 Sep - 04 Oct	Vueling Airlines
02 Sep - 04 Oct	Nouvelair	direct

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

Return flights