Cheapest return flights from Porto to Istanbul in August from $322

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

30 Aug - 07 Sep easyJet
25 Aug - 01 Sep Ryanair
30 Aug - 06 Sep easyJet
30 Aug - 05 Sep easyJet
14 Aug - 21 Aug Ryanair
21 Aug - 26 Aug Ryanair
21 Aug - 28 Aug Ryanair
07 Aug - 14 Aug Air Serbia
27 Aug - 03 Sep Lufthansa
27 Aug - 06 Sep Lufthansa
26 Aug - 31 Aug Ryanair
09 Aug - 12 Aug Air Europa
25 Aug - 06 Sep Lufthansa
25 Aug - 05 Sep easyJet
18 Aug - 26 Aug Lufthansa
16 Aug - 23 Aug Ryanair
20 Aug - 24 Aug easyJet
08 Aug - 16 Aug Ryanair
26 Aug - 02 Sep Ryanair
27 Aug - 03 Sep Turkish Airlines direct

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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