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

Return flights

16 Sep - 23 Sep	Volotea	direct
09 Sep - 23 Sep	Volotea	direct
27 Sep - 14 Oct	Volotea	direct
23 Sep - 07 Oct	Volotea	direct
16 Sep - 04 Oct	Volotea	direct
09 Sep - 16 Sep	Volotea	direct
23 Sep - 04 Oct	Volotea	direct
27 Sep - 07 Oct	Ryanair
27 Sep - 07 Oct	Volotea	direct
27 Sep - 04 Oct	Volotea	direct
24 Sep - 30 Sep	Volotea
18 Sep - 02 Oct	Ryanair
23 Sep - 27 Sep	Volotea
12 Sep - 26 Sep	easyJet
16 Sep - 27 Sep	Volotea	direct
16 Sep - 20 Sep	Volotea	direct
09 Sep - 27 Sep	Volotea	direct
09 Sep - 20 Sep	Volotea	direct

Also check the deals for one-way flights from Lille to Athens 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 Athens in September from 131€

Return flights