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

Return flights

10 Dec - 14 Dec	ITA Airways
04 Dec - 06 Dec	SWISS
15 Dec - 19 Dec	ITA Airways
03 Dec - 07 Dec	ITA Airways
03 Dec - 08 Dec	KLM
29 Dec - 08 Jan	ITA Airways
06 Dec - 09 Dec	SWISS
13 Dec - 11 Jan	ITA Airways
27 Dec - 01 Jan	ITA Airways
17 Dec - 15 Jan	KLM
13 Dec - 16 Dec	SWISS
18 Dec - 01 Jan	ITA Airways
17 Dec - 31 Dec	KLM
10 Dec - 15 Dec	Aer Lingus
26 Dec - 30 Dec	Luxair
19 Dec - 01 Jan	ITA Airways
11 Dec - 06 Jan	KLM
19 Dec - 11 Jan	Luxair
15 Dec - 06 Jan	ITA Airways
26 Dec - 01 Jan	ITA Airways

Also check the deals for one-way flights from London to Warsaw 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.

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Cheapest return flights from London to Warsaw in December from $357

Return flights