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

Return flights

03 Dec - 08 Dec	Lufthansa
29 Dec - 05 Jan	Lufthansa
06 Dec - 09 Dec	SWISS
06 Dec - 08 Dec	SWISS
18 Dec - 23 Dec	KLM
10 Dec - 14 Dec	KLM
30 Dec - 09 Jan	KLM
30 Dec - 07 Jan	KLM
02 Dec - 08 Dec	KLM
18 Dec - 22 Dec	KLM
24 Dec - 11 Jan	KLM
11 Dec - 14 Dec	KLM
30 Dec - 05 Jan	KLM
24 Dec - 28 Dec	KLM
09 Dec - 14 Dec	KLM
02 Dec - 01 Jan	KLM
30 Dec - 02 Jan	KLM
23 Dec - 11 Jan	SWISS
29 Dec - 02 Jan	KLM
29 Dec - 04 Jan	Lufthansa

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 241€

Return flights