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

Return flights

01 Dec - 04 Dec	Pegasus Airlines
01 Dec - 08 Dec	Pegasus Airlines
01 Dec - 04 Dec	Pegasus Airlines	direct
01 Dec - 06 Dec	Pegasus Airlines	direct
01 Dec - 08 Dec	Pegasus Airlines	direct
13 Dec - 15 Dec	Pegasus Airlines
10 Dec - 14 Dec	Pegasus Airlines
06 Dec - 08 Dec	AJet
08 Dec - 10 Dec	Pegasus Airlines
06 Dec - 08 Dec	AJet	direct
29 Dec - 04 Jan	Wizz Air
26 Dec - 03 Jan	Pegasus Airlines
30 Dec - 08 Jan	Wizz Air UK
25 Dec - 05 Jan	AJet
26 Dec - 01 Jan	Pegasus Airlines
25 Dec - 05 Jan	AJet	direct
25 Dec - 03 Jan	AJet
31 Dec - 02 Jan	Air Serbia
27 Dec - 02 Jan	Air Serbia
29 Dec - 03 Jan	Air Serbia

Also check the deals for one-way flights from Istanbul 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 Istanbul to Copenhagen in December from 107€

Return flights