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

Return flights

08 Dec - 24 Dec	Ryanair	direct
11 Dec - 24 Dec	Ryanair	direct
08 Dec - 27 Dec	Ryanair	direct
11 Dec - 27 Dec	Ryanair	direct
17 Dec - 24 Dec	Ryanair	direct
24 Dec - 27 Dec	Ryanair	direct
17 Dec - 27 Dec	Ryanair	direct

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

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Cheapest return flights from Copenhagen to Sofia in December from 138€

Return flights