AirHint found the following cheapest return flights from London (LCY) to Thessaloniki (SKG) in December 2025 (see full year).

Return flights

10 Dec - 14 Dec	SWISS
05 Dec - 09 Dec	SWISS
03 Dec - 09 Dec	SWISS
05 Dec - 14 Dec	SWISS
03 Dec - 07 Dec	SWISS
05 Dec - 07 Dec	SWISS
06 Dec - 13 Dec	SWISS
01 Dec - 21 Dec	SWISS
01 Dec - 09 Dec	SWISS
06 Dec - 18 Dec	SWISS
30 Dec - 15 Jan	Lufthansa
18 Dec - 11 Jan	ITA Airways
31 Dec - 08 Jan	SWISS
31 Dec - 07 Jan	KLM
10 Dec - 01 Jan	SWISS
26 Dec - 01 Jan	KLM
15 Dec - 11 Jan	ITA Airways
17 Dec - 20 Jan	Lufthansa
13 Dec - 08 Jan	SWISS
31 Dec - 10 Jan	SWISS

Also check the deals for one-way flights from London to Thessaloniki in December.

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.

Book a cheap hotel in Thessaloniki

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Cheapest return flights from London to Thessaloniki in December from 212€

Return flights