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

Return flights

01 Dec - 10 Dec	Air Europa
10 Dec - 13 Dec	Air Europa
01 Dec - 05 Dec	Air Europa
01 Dec - 09 Dec	Air Europa
01 Dec - 03 Dec	Air Europa
01 Dec - 04 Dec	Air Europa
09 Dec - 16 Dec	Air Europa
14 Dec - 20 Dec	Air Europa
05 Dec - 10 Dec	SKY express
05 Dec - 08 Dec	SKY express
31 Dec - 04 Jan	Pegasus Airlines
29 Dec - 03 Jan	Pegasus Airlines
27 Dec - 03 Jan	Pegasus Airlines
17 Dec - 07 Jan	SKY express
12 Dec - 01 Jan	SKY express
29 Dec - 02 Jan	Pegasus Airlines
17 Dec - 06 Jan	SKY express
28 Dec - 03 Jan	Pegasus Airlines
22 Dec - 02 Jan	Pegasus Airlines
14 Dec - 01 Jan	SKY express

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Lisbon to Istanbul in December from 91€

Return flights