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

Return flights

01 Dec - 08 Dec	Lufthansa
05 Dec - 08 Dec	Lufthansa
24 Dec - 26 Jan	KLM
12 Dec - 15 Dec	Lufthansa
17 Dec - 24 Dec	KLM
06 Dec - 09 Dec	SWISS
06 Dec - 08 Dec	SWISS
10 Dec - 02 Jan	KLM
04 Dec - 07 Dec	KLM
24 Dec - 01 Jan	KLM
19 Dec - 22 Dec	KLM
18 Dec - 21 Dec	KLM
07 Dec - 09 Dec	Lufthansa
26 Dec - 02 Jan	KLM
20 Dec - 05 Jan	KLM
13 Dec - 02 Jan	KLM
29 Dec - 04 Jan	KLM
20 Dec - 02 Jan	KLM
20 Dec - 01 Jan	KLM
20 Dec - 04 Jan	KLM

Also check the deals for one-way flights from London to Riga 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 Riga in December from 237€

Return flights