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

Return flights

09 Dec - 12 Dec	easyJet
03 Dec - 09 Dec	easyJet
03 Dec - 17 Dec	easyJet
02 Dec - 15 Dec	easyJet
07 Dec - 14 Dec	Vueling Airlines
02 Dec - 04 Dec	Ryanair
02 Dec - 11 Dec	Ryanair
09 Dec - 11 Dec	easyJet
01 Dec - 05 Dec	Ryanair
06 Dec - 09 Dec	easyJet
31 Dec - 07 Jan	Wizz Air
22 Dec - 09 Jan	Pegasus Airlines
23 Dec - 06 Jan	Pegasus Airlines
28 Dec - 01 Jan	Pegasus Airlines
31 Dec - 04 Jan	Wizz Air
23 Dec - 05 Jan	Pegasus Airlines
24 Dec - 04 Jan	Pegasus Airlines
25 Dec - 01 Jan	Pegasus Airlines
25 Dec - 05 Jan	Pegasus Airlines
29 Dec - 04 Jan	Pegasus Airlines

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 $160

Return flights