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

Return flights

10 Sep - 24 Sep	Ryanair	direct
20 Sep - 24 Sep	Ryanair
10 Sep - 20 Sep	Eurowings
10 Sep - 20 Sep	Eurowings	direct
20 Sep - 24 Sep	Ryanair	direct
20 Sep - 08 Oct	Ryanair	direct
10 Sep - 13 Sep	Ryanair	direct
12 Sep - 19 Sep	Ryanair
04 Sep - 06 Sep	Ryanair
12 Sep - 19 Sep	Eurowings	direct
04 Sep - 06 Sep	Eurowings	direct

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

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Cologne to Lisbon in September from 210€

Return flights