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

Return flights

06 Mar - 08 Mar	Air Europa
02 Mar - 05 Mar	Air Europa
04 Mar - 09 Mar	Air Europa
16 Mar - 21 Mar	Air Europa
05 Mar - 09 Mar	easyJet
17 Mar - 24 Mar	easyJet
18 Mar - 24 Mar	easyJet
14 Mar - 18 Mar	Air Europa
09 Mar - 15 Mar	Air Europa
18 Mar - 22 Mar	easyJet
27 Mar - 01 Apr	easyJet
26 Mar - 13 Apr	Lufthansa
24 Mar - 12 Apr	Vueling Airlines
24 Mar - 13 Apr	Vueling Airlines
28 Mar - 01 Apr	Ryanair
24 Mar - 10 Apr	Vueling Airlines
31 Mar - 06 Apr	easyJet
31 Mar - 12 Apr	Vueling Airlines
31 Mar - 13 Apr	Vueling Airlines
21 Mar - 10 Apr	Vueling Airlines

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

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 Porto to Istanbul in March from 138€

Return flights