AirHint found the following cheapest return flights from Cologne (CGN) to Lisbon (LIS) in August 2026 (see full year).

Return flights

31 Aug - 07 Sep	Lufthansa
31 Aug - 04 Sep	Lufthansa
28 Aug - 30 Aug	Ryanair
06 Aug - 10 Aug	Ryanair
02 Aug - 06 Aug	Ryanair	direct
02 Aug - 16 Aug	Ryanair
31 Aug - 07 Sep	Eurowings	direct
31 Aug - 04 Sep	Eurowings	direct
22 Aug - 12 Sep	Eurowings	direct
06 Aug - 16 Aug	Ryanair	direct
02 Aug - 09 Aug	Ryanair	direct
02 Aug - 16 Aug	Ryanair	direct
22 Aug - 29 Aug	Eurowings
22 Aug - 29 Aug	Eurowings	direct
28 Aug - 30 Aug	Eurowings	direct

Also check the deals for one-way flights from Cologne to Lisbon in August.

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 Lisbon in August from $255

Return flights