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

Return flights

03 Sep - 17 Sep	Ryanair
28 Sep - 01 Oct	Ryanair
09 Sep - 18 Sep	Lufthansa
10 Sep - 17 Sep	Ryanair
16 Sep - 14 Oct	Ryanair
16 Sep - 25 Sep	Ryanair
14 Sep - 03 Oct	Ryanair
04 Sep - 17 Sep	easyJet
28 Sep - 30 Sep	Ryanair
20 Sep - 25 Sep	Ryanair
23 Sep - 23 Sep	Aegean Airlines
21 Sep - 25 Sep	Ryanair
11 Sep - 18 Sep	Lufthansa
28 Sep - 07 Oct	Ryanair
30 Sep - 09 Oct	Lufthansa
15 Sep - 05 Oct	Ryanair
14 Sep - 09 Oct	Aegean Airlines
14 Sep - 02 Oct	Aegean Airlines
15 Sep - 04 Oct	easyJet
29 Sep - 07 Oct	easyJet

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 128€

Return flights