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

Return flights

31 Dec - 09 Jan	LOT
31 Dec - 07 Jan	LOT
12 Dec - 19 Dec	LOT
12 Dec - 15 Dec	LOT
11 Dec - 16 Dec	LOT
05 Dec - 08 Dec	LOT
09 Dec - 12 Dec	LOT
10 Dec - 15 Dec	LOT
10 Dec - 17 Dec	LOT
09 Dec - 16 Dec	LOT
06 Dec - 07 Dec	LOT
11 Dec - 15 Dec	LOT
16 Dec - 09 Jan	LOT
29 Dec - 09 Jan	LOT
15 Dec - 08 Jan	LOT
25 Dec - 06 Jan	LOT
31 Dec - 05 Jan	LOT
16 Dec - 08 Jan	LOT
26 Dec - 05 Jan	LOT
30 Dec - 09 Jan	British Airways	direct

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 $185

Return flights