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

Return flights

11 Sep - 15 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
29 Sep - 08 Oct	Ryanair
23 Sep - 30 Sep	Ryanair
26 Sep - 17 Oct	Ryanair	direct
24 Sep - 30 Sep	Ryanair
26 Sep - 15 Oct	Ryanair	direct
22 Sep - 02 Oct	Ryanair
11 Sep - 14 Sep	Ryanair
12 Sep - 17 Sep	Ryanair
11 Sep - 18 Sep	Ryanair
28 Sep - 03 Oct	Ryanair
30 Sep - 07 Oct	Ryanair
24 Sep - 28 Sep	Ryanair
30 Sep - 08 Oct	Ryanair
16 Sep - 21 Sep	Ryanair
10 Sep - 12 Sep	Ryanair
30 Sep - 20 Oct	Ryanair	direct
28 Sep - 04 Oct	Ryanair
12 Sep - 19 Sep	Ryanair

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 122€

Return flights