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

Return flights

08 Apr - 14 Apr	Vueling Airlines
12 Apr - 14 Apr	Vueling Airlines
12 Apr - 29 Apr	Vueling Airlines
12 Apr - 26 Apr	Vueling Airlines
12 Apr - 15 Apr	Vueling Airlines
08 Apr - 26 Apr	Vueling Airlines
08 Apr - 15 Apr	Vueling Airlines
23 Apr - 04 May	Vueling Airlines
08 Apr - 29 Apr	Vueling Airlines
23 Apr - 29 Apr	Vueling Airlines
08 Apr - 10 Apr	Vueling Airlines
20 Apr - 04 May	Vueling Airlines
24 Apr - 04 May	Vueling Airlines

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

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 April from 264€

Return flights