AirHint found the following cheapest return flights from Santander (SDR) to Istanbul (IST) in July 2025 (see full year).

Return flights

24 Jul - 30 Jul	Ryanair
26 Jul - 30 Jul	Ryanair
05 Jul - 12 Jul	Ryanair
07 Jul - 14 Jul	Ryanair
07 Jul - 15 Jul	Ryanair
24 Jul - 28 Jul	Ryanair
28 Jul - 03 Aug	Ryanair
27 Jul - 30 Jul	Vueling Airlines
24 Jul - 13 Aug	Vueling Airlines
27 Jul - 13 Aug	Vueling Airlines
10 Jul - 30 Jul	Vueling Airlines
13 Jul - 30 Jul	Vueling Airlines
26 Jul - 13 Aug	Vueling Airlines

Also check the deals for one-way flights from Santander to Istanbul in July.

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 Santander to Istanbul in July from 250€

Return flights