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

Return flights

07 Dec - 10 Dec	LOT
08 Dec - 10 Dec	LOT
07 Dec - 09 Dec	LOT
01 Dec - 04 Dec	LOT
02 Dec - 04 Dec	LOT
03 Dec - 07 Dec	LOT
06 Dec - 09 Dec	LOT
02 Dec - 05 Dec	LOT
02 Dec - 06 Dec	LOT
03 Dec - 06 Dec	Scandinavian Airlines
16 Dec - 10 Jan	Scandinavian Airlines
31 Dec - 05 Jan	Lufthansa
29 Dec - 05 Jan	Lufthansa
26 Dec - 05 Jan	Lufthansa
25 Dec - 29 Jan	Scandinavian Airlines
30 Dec - 06 Jan	Scandinavian Airlines
30 Dec - 05 Jan	Scandinavian Airlines
30 Dec - 01 Jan	Scandinavian Airlines
28 Dec - 03 Jan	Lufthansa
29 Dec - 02 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 140€

Return flights