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

Return flights

26 Jan - 05 Feb	Ryanair
26 Jan - 06 Feb	Ryanair
31 Jan - 01 Feb	Ryanair
26 Jan - 01 Feb	Ryanair
31 Jan - 02 Feb	Ryanair
29 Jan - 05 Feb	Ryanair
31 Jan - 01 Feb	Ryanair	direct
30 Jan - 01 Feb	Ryanair
31 Jan - 07 Feb	Ryanair	direct
26 Jan - 02 Feb	Ryanair
26 Jan - 31 Jan	Ryanair
26 Jan - 31 Jan	Ryanair	direct
27 Jan - 29 Jan	Ryanair
29 Jan - 31 Jan	Ryanair
29 Jan - 31 Jan	Ryanair	direct
25 Jan - 29 Jan	Eurowings

Also check the deals for one-way flights from Cologne to Porto 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 Cologne to Porto in January from 98€

Return flights