AirHint found the following cheapest return flights from Thessaloniki (SKG) to Sofia (SOF) in August 2025 (see full year).

Return flights

16 Aug - 20 Aug	Aegean Airlines
23 Aug - 30 Aug	Aegean Airlines
06 Aug - 17 Aug	Aegean Airlines
07 Aug - 13 Aug	Aegean Airlines
08 Aug - 10 Aug	SKY express
08 Aug - 28 Aug	SKY express
01 Aug - 10 Aug	SKY express
08 Aug - 20 Aug	SKY express
08 Aug - 14 Aug	SKY express
01 Aug - 20 Aug	SKY express

Also check the deals for one-way flights from Thessaloniki to Sofia in August.

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 Thessaloniki to Sofia in August from 203€

Return flights