AirHint found the following cheapest return flights from Cologne (CGN) to Porto (OPO) in July 2025 (see full year).

Return flights

08 Jul - 17 Jul	Eurowings
08 Jul - 14 Jul	Eurowings
08 Jul - 22 Jul	Eurowings
08 Jul - 11 Jul	Eurowings
17 Jul - 19 Jul	Ryanair
08 Jul - 10 Jul	Eurowings
10 Jul - 17 Jul	Eurowings
15 Jul - 18 Jul	Ryanair
09 Jul - 14 Jul	Eurowings
16 Jul - 18 Jul	Ryanair
29 Jul - 07 Aug	Eurowings
31 Jul - 05 Aug	Ryanair	direct
28 Jul - 01 Aug	Ryanair
31 Jul - 07 Aug	Ryanair
29 Jul - 02 Aug	Eurowings
26 Jul - 05 Aug	Ryanair
29 Jul - 04 Aug	Ryanair
31 Jul - 28 Aug	Ryanair	direct
30 Jul - 04 Aug	Eurowings
24 Jul - 07 Aug	Eurowings

Also check the deals for one-way flights from Cologne to Porto in July.

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 July from 197€

Return flights