Cheapest return flights from Kos to Sofia in January from $198

AirHint found the following cheapest return flights from Kos (KGS) to Sofia (SOF) in January 2026 (see full year).

Return flights

18 Jan - 25 Jan SKY express
20 Jan - 25 Jan Aegean Airlines
19 Jan - 25 Jan SKY express

Also check the deals for one-way flights from Kos to Sofia in January.

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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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