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

Return flights

08 Dec - 15 Dec	airBaltic	direct
12 Dec - 15 Dec	airBaltic	direct
05 Dec - 08 Dec	airBaltic	direct
01 Dec - 05 Dec	airBaltic	direct
08 Dec - 12 Dec	airBaltic	direct
11 Dec - 14 Dec	Ryanair
04 Dec - 08 Dec	Ryanair
08 Dec - 13 Dec	Ryanair
15 Dec - 19 Dec	airBaltic	direct
06 Dec - 09 Dec	Ryanair
29 Dec - 01 Jan	LOT

Also check the deals for one-way flights from Sofia 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.

Book a cheap hotel in Riga

Cheap car rent in Riga

Cheapest return flights from Sofia to Riga in December from 149€

Return flights