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

Return flights

18 Sep - 29 Sep	Ryanair	direct
18 Sep - 22 Sep	Ryanair	direct
18 Sep - 25 Sep	Jet2	direct
25 Sep - 29 Sep	Ryanair	direct
25 Sep - 06 Oct	Ryanair	direct
25 Sep - 27 Sep	Ryanair	direct
21 Sep - 05 Oct	Aegean Airlines
30 Sep - 05 Oct	Ryanair
19 Sep - 28 Sep	Pegasus Airlines
26 Sep - 28 Sep	SKY express
29 Sep - 05 Oct	Ryanair
17 Sep - 23 Sep	Aegean Airlines
25 Sep - 28 Sep	Ryanair	direct
26 Sep - 05 Oct	SKY express
26 Sep - 06 Oct	SKY express
16 Sep - 18 Sep	SKY express
25 Sep - 04 Oct	Jet2
22 Sep - 02 Oct	Pegasus Airlines
25 Sep - 02 Oct	Ryanair
22 Sep - 05 Oct	SKY express

Also check the deals for one-way flights from Athens 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 Athens to London in September from 117€

Return flights