AirHint found the following cheapest return flights from Istanbul (SAW) to Porto (OPO) in May 2026 (see full year).

Return flights

03 May - 09 May	Pegasus Airlines
01 May - 08 May	Pegasus Airlines
02 May - 09 May	Pegasus Airlines
24 May - 02 Jun	Pegasus Airlines
14 May - 20 May	Pegasus Airlines
26 May - 30 May	Pegasus Airlines
27 May - 31 May	Pegasus Airlines
26 May - 31 May	Pegasus Airlines
23 May - 30 May	Pegasus Airlines
01 May - 19 May	Pegasus Airlines

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

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 Istanbul to Porto in May from 193€

Return flights