AirHint found the following cheapest return flights from Sofia (SOF) to Copenhagen (CPH) in September 2026 (see full year).

Return flights

17 Sep - 22 Sep	Ryanair	direct
18 Sep - 21 Sep	Air Serbia
19 Sep - 21 Sep	Air Serbia
19 Sep - 22 Sep	Air Serbia
16 Sep - 22 Sep	Ryanair	direct
16 Sep - 21 Sep	Ryanair	direct
17 Sep - 01 Oct	Ryanair	direct
16 Sep - 19 Sep	Air Serbia
18 Sep - 20 Sep	Air Serbia
17 Sep - 19 Sep	Ryanair	direct
19 Sep - 22 Sep	Ryanair	direct
16 Sep - 01 Oct	Ryanair	direct
19 Sep - 01 Oct	Ryanair	direct

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

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 Sofia to Copenhagen in September from 112€

Return flights