Cheapest return flights from Porto to Istanbul in August from $370

Best time to book flights for Porto (OPO) to Istanbul (IST) flights at AirHint

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

Return flights

26 Aug - 01 Sep Iberia
27 Aug - 31 Aug Ryanair
05 Aug - 12 Aug Ryanair
26 Aug - 31 Aug Iberia
04 Aug - 09 Aug Wizz Air Malta
21 Aug - 28 Aug Ryanair
26 Aug - 30 Aug Iberia
30 Aug - 08 Sep Lufthansa
19 Aug - 26 Aug Vueling Airlines
27 Aug - 01 Sep Ryanair
04 Aug - 15 Aug easyJet
04 Aug - 10 Aug easyJet
04 Aug - 07 Aug easyJet
31 Aug - 14 Sep Lufthansa
25 Aug - 01 Sep Lufthansa
25 Aug - 03 Sep Transavia France
30 Aug - 07 Sep Lufthansa
29 Aug - 05 Sep Lufthansa
30 Aug - 08 Sep Turkish Airlines direct
27 Aug - 15 Sep Vueling Airlines

Also check the deals for one-way flights from Porto to Istanbul in August.

Skyscanner

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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