Cheapest return flights from Istanbul to Porto in May from $274

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

Return flights

18 May - 21 May Pegasus Airlines
21 May - 26 May Pegasus Airlines
26 May - 29 May Air Europa
22 May - 29 May Air Europa
05 May - 13 May Vueling Airlines
20 May - 03 Jun Vueling Airlines
25 May - 30 May Air Europa
05 May - 16 May Vueling Airlines
09 May - 27 May Vueling Airlines
20 May - 04 Jun Vueling Airlines
02 May - 13 May Vueling Airlines
18 May - 19 May Vueling Airlines
18 May - 03 Jun Vueling Airlines
18 May - 04 Jun Vueling Airlines
20 May - 01 Jun Vueling Airlines
18 May - 01 Jun Vueling Airlines
25 May - 03 Jun Vueling Airlines
25 May - 14 Jun Vueling Airlines
25 May - 10 Jun Vueling Airlines
25 May - 13 Jun Vueling Airlines

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

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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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