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

Return flights

07 Oct - 14 Oct	Ryanair
07 Oct - 14 Oct	airBaltic	direct
04 Oct - 11 Oct	airBaltic	direct
09 Oct - 14 Oct	Ryanair
14 Oct - 18 Oct	airBaltic	direct
04 Oct - 06 Oct	airBaltic
14 Oct - 21 Oct	airBaltic	direct
31 Oct - 31 Oct	airBaltic
07 Oct - 09 Oct	Ryanair
03 Oct - 06 Oct	Lufthansa

Also check the deals for one-way flights from Riga to Sofia in October.

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 Sofia

Cheap car rent in Sofia

Cheapest return flights from Riga to Sofia in October from $154

Return flights