AirHint found the following cheapest return flights from Istanbul (IST) to Cologne (CGN) in January 2026 (see full year).

Return flights

20 Jan - 23 Jan	AJet	direct
20 Jan - 22 Jan	AJet	direct
20 Jan - 25 Jan	AJet	direct
20 Jan - 28 Jan	AJet	direct
19 Jan - 25 Jan	AJet	direct
15 Jan - 20 Jan	AJet	direct
21 Jan - 24 Jan	AJet	direct
19 Jan - 24 Jan	AJet	direct
19 Jan - 22 Jan	AJet	direct
23 Jan - 28 Jan	AJet	direct
15 Jan - 07 Feb	AJet	direct
30 Jan - 03 Feb	AJet	direct

Also check the deals for one-way flights from Istanbul to Cologne in January.

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 Istanbul to Cologne in January from $92

Return flights