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

Return flights

15 Jul - 18 Jul	Ryanair
06 Jul - 11 Jul	TAP
17 Jul - 20 Jul	Ryanair
19 Jul - 23 Jul	TAP
16 Jul - 23 Jul	Ryanair
08 Jul - 11 Jul	TAP
15 Jul - 20 Jul	Ryanair
09 Jul - 18 Jul	Ryanair
05 Jul - 23 Jul	Eurowings
16 Jul - 18 Jul	Ryanair
30 Jul - 03 Aug	TAP
28 Jul - 02 Aug	TAP
27 Jul - 01 Aug	TAP
28 Jul - 01 Aug	TAP
31 Jul - 03 Aug	TAP
29 Jul - 02 Aug	TAP
23 Jul - 01 Aug	TAP
31 Jul - 14 Aug	TAP
27 Jul - 02 Aug	TAP
28 Jul - 03 Aug	TAP

Also check the deals for one-way flights from Duesseldorf 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 Duesseldorf to Porto in July from 175€

Return flights