AirHint found the following cheapest return flights from Cologne (CGN) to Stockholm (ARN) in September 2025 (see full year).

Return flights

30 Sep - 08 Oct	Ryanair	direct
30 Sep - 01 Oct	Ryanair	direct
30 Sep - 15 Oct	Ryanair	direct
30 Sep - 14 Oct	Ryanair	direct
23 Sep - 08 Oct	Ryanair	direct
23 Sep - 01 Oct	Ryanair	direct
30 Sep - 07 Oct	Ryanair	direct
23 Sep - 30 Sep	Ryanair	direct
30 Sep - 06 Oct	Ryanair
23 Sep - 26 Sep	Ryanair	direct
23 Sep - 27 Sep	Ryanair	direct
23 Sep - 29 Sep	Ryanair
27 Sep - 08 Oct	Ryanair	direct
16 Sep - 01 Oct	Ryanair
25 Sep - 30 Sep	Ryanair
24 Sep - 30 Sep	Ryanair
16 Sep - 30 Sep	Pegasus Airlines
21 Sep - 30 Sep	AJet
27 Sep - 30 Sep	Ryanair	direct
26 Sep - 30 Sep	Ryanair

Also check the deals for one-way flights from Cologne to Stockholm 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 Cologne to Stockholm in September from 52€

Return flights