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

Return flights

26 Aug - 10 Sep	easyJet
20 Aug - 11 Sep	easyJet
20 Aug - 27 Aug	TAP
26 Aug - 04 Sep	KLM
26 Aug - 05 Sep	KLM
27 Aug - 06 Sep	Ryanair
28 Aug - 04 Sep	KLM
26 Aug - 06 Sep	Ryanair
31 Aug - 04 Sep	Lufthansa
26 Aug - 02 Sep	Brussels Airlines
24 Aug - 03 Sep	KLM
23 Aug - 27 Aug	easyJet
20 Aug - 31 Aug	easyJet
22 Aug - 27 Aug	TAP
21 Aug - 27 Aug	TAP
25 Aug - 27 Aug	Ryanair
27 Aug - 29 Aug	Ryanair
23 Aug - 31 Aug	easyJet
27 Aug - 31 Aug	Ryanair
20 Aug - 25 Aug	easyJet

Also check the deals for one-way flights from Prague 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 Prague to Porto in August from $235

Return flights