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

Return flights

19 Dec - 22 Dec	Ryanair	direct
20 Dec - 22 Dec	Ryanair	direct
27 Dec - 11 Jan	Ryanair
27 Dec - 05 Jan	Ryanair	direct
27 Dec - 11 Jan	Ryanair	direct
19 Dec - 05 Jan	Ryanair	direct
20 Dec - 05 Jan	Ryanair	direct

Also check the deals for one-way flights from Oslo 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 Oslo to Riga in December from 131€

Return flights