AirHint found the following cheapest one-way flights from Lisbon (LIS) to Cologne (CGN) in September 2025 (see full year).

One-Way flights

10 Sep	Ryanair	direct
24 Sep	Ryanair	direct
11 Sep	Vueling Airlines
25 Sep	Vueling Airlines
30 Sep	Vueling Airlines
18 Sep	Ryanair
17 Sep	Ryanair	direct
23 Sep	Vueling Airlines
16 Sep	Ryanair
12 Sep	Ryanair

Also check the deals for return flights from Lisbon to Cologne 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 one-way flights from Lisbon to Cologne in September from 67€

One-Way flights