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

Return flights

01 Sep - 05 Sep	Lufthansa
09 Sep - 18 Sep	Lufthansa
21 Sep - 02 Oct	Ryanair
27 Sep - 01 Oct	Ryanair
03 Sep - 10 Sep	SWISS
21 Sep - 25 Sep	Ryanair
08 Sep - 26 Sep	Lufthansa
23 Sep - 25 Sep	Aegean Airlines
16 Sep - 18 Sep	Ryanair
11 Sep - 18 Sep	Lufthansa
23 Sep - 30 Sep	Aegean Airlines
28 Sep - 02 Oct	Ryanair
25 Sep - 02 Oct	easyJet
14 Sep - 02 Oct	Aegean Airlines
09 Sep - 16 Sep	easyJet
23 Sep - 05 Oct	Aegean Airlines
30 Sep - 05 Oct	Aegean Airlines
30 Sep - 14 Oct	Volotea	direct
30 Sep - 12 Oct	Volotea	direct
23 Sep - 14 Oct	Volotea	direct

Also check the deals for one-way flights from Luxemburg 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 Luxemburg to Athens in September from $139

Return flights