AirHint found the following cheapest one-way flights from Istanbul (IST) to Cologne (CGN) in October 2025 (see full year).

One-Way flights

15 Oct	AJet	direct
09 Oct	Pegasus Airlines	direct
08 Oct	Pegasus Airlines	direct
16 Oct	AJet	direct
12 Oct	Pegasus Airlines	direct
29 Oct	Pegasus Airlines	direct
02 Oct	AJet	direct
20 Oct	Pegasus Airlines
01 Oct	Pegasus Airlines	direct
06 Oct	Pegasus Airlines

Also check the deals for return flights from Istanbul to Cologne in October.

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 one-way flights from Istanbul to Cologne in October from 37€

One-Way flights