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

Return flights

01 Dec - 08 Dec	Ryanair	direct
06 Dec - 08 Dec	Ryanair	direct
01 Dec - 10 Dec	Ryanair	direct
06 Dec - 10 Dec	Ryanair	direct
18 Dec - 07 Jan	Ryanair	direct
27 Dec - 07 Jan	Ryanair	direct
11 Dec - 29 Dec	Ryanair	direct
11 Dec - 17 Dec	Ryanair	direct
11 Dec - 22 Dec	Ryanair	direct
27 Dec - 05 Jan	Air Serbia
01 Dec - 17 Dec	Ryanair	direct
06 Dec - 17 Dec	Ryanair	direct
06 Dec - 22 Dec	Ryanair	direct
18 Dec - 05 Jan	Ryanair	direct
27 Dec - 05 Jan	Ryanair	direct

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

Book a cheap hotel in Copenhagen

Cheap car rent in Copenhagen

Cheapest return flights from Sofia to Copenhagen in December from $114

Return flights