AirHint found the following cheapest return flights from London (STN) to Thessaloniki (SKG) in September 2026 (see full year).

Return flights

26 Sep - 17 Oct	Ryanair	direct
26 Sep - 10 Oct	Ryanair	direct
12 Sep - 17 Sep	Ryanair
23 Sep - 29 Sep	Ryanair
24 Sep - 29 Sep	Ryanair
05 Sep - 10 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
23 Sep - 10 Oct	Ryanair	direct
24 Sep - 10 Oct	Ryanair	direct
02 Sep - 09 Sep	Ryanair
23 Sep - 02 Oct	Ryanair
24 Sep - 02 Oct	Ryanair
26 Sep - 08 Oct	Ryanair	direct
19 Sep - 10 Oct	Ryanair	direct
23 Sep - 01 Oct	Ryanair
12 Sep - 16 Sep	Ryanair	direct
02 Sep - 16 Sep	Ryanair	direct
16 Sep - 19 Sep	Ryanair
26 Sep - 13 Oct	Ryanair	direct
05 Sep - 16 Sep	Ryanair	direct

Also check the deals for one-way flights from London to Thessaloniki 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 London to Thessaloniki in September from $172

Return flights