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

Return flights

27 Aug - 03 Sep	Wizz Air Malta
31 Aug - 05 Sep	Wizz Air Malta
29 Aug - 03 Sep	Ryanair
28 Aug - 04 Sep	Ryanair
19 Aug - 26 Aug	Ryanair
23 Aug - 30 Aug	easyJet
26 Aug - 02 Sep	Ryanair
30 Aug - 03 Sep	Vueling Airlines
21 Aug - 26 Aug	SWISS
24 Aug - 31 Aug	TAP
24 Aug - 30 Aug	SWISS
25 Aug - 01 Sep	Ryanair
20 Aug - 26 Aug	Ryanair
28 Aug - 31 Aug	Ryanair
12 Aug - 19 Aug	Brussels Airlines
19 Aug - 25 Aug	Ryanair
05 Aug - 13 Aug	Ryanair
24 Aug - 06 Sep	Ryanair
31 Aug - 08 Sep	Ryanair
30 Aug - 06 Sep	easyJet

Also check the deals for one-way flights from Porto to Heraklion 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 Porto to Heraklion in August from 231€

Return flights