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

Return flights

15 Dec - 19 Dec	Ryanair
15 Dec - 18 Dec	Ryanair
08 Dec - 13 Dec	Ryanair
08 Dec - 11 Dec	Air Serbia
10 Dec - 16 Dec	Air Serbia
06 Dec - 13 Dec	Ryanair
07 Dec - 11 Dec	Air Serbia
07 Dec - 10 Dec	Air Serbia
12 Dec - 18 Dec	Ryanair
07 Dec - 12 Dec	Air Serbia
31 Dec - 07 Jan	Ryanair
22 Dec - 07 Jan	Ryanair
31 Dec - 14 Jan	SKY express
29 Dec - 07 Jan	Ryanair
21 Dec - 08 Jan	Ryanair
29 Dec - 01 Jan	Ryanair
20 Dec - 08 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
22 Dec - 02 Jan	Ryanair
31 Dec - 16 Jan	SKY express

Also check the deals for one-way flights from Thessaloniki to Lisbon 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 Thessaloniki to Lisbon in December from $148

Return flights