AirHint found the following cheapest return flights from Duesseldorf (DUS) to Porto (OPO) in September 2026 (see full year).

Return flights

01 Sep - 07 Sep	Ryanair
10 Sep - 14 Sep	Ryanair
01 Sep - 14 Sep	Ryanair
01 Sep - 07 Sep	Ryanair	direct
01 Sep - 01 Sep	Ryanair
16 Sep - 20 Sep	Ryanair
12 Sep - 14 Sep	Vueling Airlines
10 Sep - 13 Sep	Ryanair
10 Sep - 13 Sep	Ryanair	direct
10 Sep - 14 Sep	Ryanair	direct
12 Sep - 11 Oct	Vueling Airlines
12 Sep - 11 Oct	Eurowings	direct

Also check the deals for one-way flights from Duesseldorf to Porto 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 return flights from Duesseldorf to Porto in September from 145€

Return flights