Cheapest return flights from Riga to Sofia in September from $149

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

Return flights

09 Sep - 16 Sep Ryanair
30 Sep - 07 Oct Ryanair
20 Sep - 23 Sep Ryanair
30 Sep - 07 Oct airBaltic direct
27 Sep - 30 Sep Ryanair
06 Sep - 16 Sep Ryanair
09 Sep - 15 Sep Ryanair
23 Sep - 27 Sep Lufthansa
20 Sep - 27 Sep Ryanair
26 Sep - 28 Sep Ryanair
06 Sep - 13 Sep Ryanair
18 Sep - 25 Sep Norwegian Air Sweden AOC

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

Skyscanner

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

Feel free to contact us with any feedback or request another flight research.