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

Return flights

06 Dec - 13 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
05 Dec - 12 Dec	airBaltic	direct
05 Dec - 08 Dec	airBaltic	direct
12 Dec - 22 Dec	airBaltic	direct
15 Dec - 25 Dec	LOT
29 Dec - 09 Jan	airBaltic
24 Dec - 29 Dec	LOT
24 Dec - 02 Jan	LOT
19 Dec - 24 Dec	LOT
20 Dec - 25 Dec	LOT
22 Dec - 02 Jan	LOT
26 Dec - 05 Jan	LOT
26 Dec - 29 Dec	LOT
26 Dec - 08 Jan	LOT
29 Dec - 01 Jan	LOT
26 Dec - 02 Jan	LOT
28 Dec - 01 Jan	LOT
29 Dec - 02 Jan	LOT
29 Dec - 09 Jan	airBaltic	direct

Also check the deals for one-way flights from Riga to Bucharest 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 Riga to Bucharest in December from $155

Return flights