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

Return flights

04 Dec - 11 Dec	Aegean Airlines
08 Dec - 11 Dec	Ryanair
04 Dec - 10 Dec	Aegean Airlines
04 Dec - 07 Dec	Aegean Airlines
28 Dec - 06 Jan	KLM
04 Dec - 14 Dec	Aegean Airlines
07 Dec - 10 Dec	easyJet
28 Dec - 01 Jan	KLM
01 Dec - 04 Dec	Ryanair
15 Dec - 18 Dec	Ryanair
11 Dec - 16 Dec	Ryanair
04 Dec - 08 Dec	Aegean Airlines
18 Dec - 04 Jan	Aegean Airlines
23 Dec - 01 Jan	Ryanair
29 Dec - 06 Jan	KLM
31 Dec - 04 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
28 Dec - 02 Jan	KLM
31 Dec - 05 Jan	KLM
18 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Thessaloniki to Basel 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 Basel in December from $156

Return flights