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

Return flights

28 Jan - 04 Feb	easyJet
16 Jan - 19 Jan	easyJet
28 Jan - 01 Feb	easyJet
16 Jan - 18 Jan	easyJet
10 Jan - 16 Jan	Ryanair
29 Jan - 04 Feb	easyJet
09 Jan - 13 Jan	Ryanair
12 Jan - 17 Jan	Ryanair
20 Jan - 25 Jan	easyJet
22 Jan - 26 Jan	easyJet
08 Jan - 17 Jan	easyJet
06 Jan - 09 Jan	Ryanair
29 Jan - 06 Feb	easyJet
01 Jan - 11 Jan	easyJet

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

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 January from 161€

Return flights