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

Return flights

11 Dec - 13 Dec	Scandinavian Airlines
05 Dec - 07 Dec	Scandinavian Airlines
17 Dec - 24 Dec	Lufthansa
04 Dec - 07 Dec	Scandinavian Airlines
29 Dec - 05 Jan	Lufthansa
12 Dec - 15 Dec	Scandinavian Airlines
08 Dec - 11 Dec	LOT
12 Dec - 14 Dec	Scandinavian Airlines
12 Dec - 16 Dec	Scandinavian Airlines
22 Dec - 28 Dec	Lufthansa
11 Dec - 14 Dec	Scandinavian Airlines
29 Dec - 03 Jan	Lufthansa
31 Dec - 03 Jan	Lufthansa
26 Dec - 01 Jan	Lufthansa
28 Dec - 01 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 $179

Return flights