AirHint found the following cheapest return flights from Lisbon (LIS) to Istanbul (IST) in December 2025 (see full year).

Return flights

05 Dec - 08 Dec	SKY express
12 Dec - 15 Dec	SKY express
04 Dec - 08 Dec	Ryanair
04 Dec - 09 Dec	Ryanair
04 Dec - 07 Dec	Ryanair
01 Dec - 08 Dec	Pegasus Airlines
01 Dec - 07 Dec	easyJet
21 Dec - 01 Jan	Aegean Airlines
01 Dec - 03 Dec	Vueling Airlines
14 Dec - 20 Dec	SKY express
05 Dec - 20 Dec	SKY express
26 Dec - 15 Jan	SKY express
26 Dec - 13 Jan	SKY express
27 Dec - 03 Jan	Pegasus Airlines
26 Dec - 11 Jan	SKY express
21 Dec - 11 Jan	SKY express
14 Dec - 03 Jan	SKY express
27 Dec - 15 Jan	Fly One
27 Dec - 13 Jan	Fly One
27 Dec - 17 Jan	Fly One

Also check the deals for one-way flights from Lisbon to Istanbul in December.

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 Lisbon to Istanbul in December from $207

Return flights