AirHint found the following cheapest return flights from Amsterdam (AMS) to Porto (OPO) in August 2025 (see full year).

Return flights

21 Aug - 04 Sep	transavia	direct
26 Aug - 03 Sep	Ryanair
20 Aug - 04 Sep	Ryanair
20 Aug - 04 Sep	transavia	direct
26 Aug - 02 Sep	Ryanair
27 Aug - 10 Sep	Ryanair
22 Aug - 05 Sep	transavia	direct
28 Aug - 04 Sep	Ryanair
22 Aug - 09 Sep	transavia
26 Aug - 03 Sep	transavia	direct
22 Aug - 26 Aug	transavia
22 Aug - 29 Aug	transavia
24 Aug - 28 Aug	transavia
21 Aug - 30 Aug	transavia
20 Aug - 26 Aug	Vueling Airlines
21 Aug - 29 Aug	transavia
20 Aug - 27 Aug	Ryanair
21 Aug - 28 Aug	transavia
18 Aug - 26 Aug	Vueling Airlines
06 Aug - 26 Aug	Air Europa

Also check the deals for one-way flights from Amsterdam to Porto 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 Amsterdam to Porto in August from $187

Return flights