AirHint found the following cheapest return flights from Kos (KGS) to Vienna (VIE) in December 2025 (see full year).

Return flights

11 Dec - 14 Dec	Aegean Airlines
20 Dec - 25 Dec	Aegean Airlines
26 Dec - 30 Dec	Aegean Airlines
28 Dec - 02 Jan	SKY express
14 Dec - 25 Dec	SKY express
14 Dec - 19 Dec	SKY express
14 Dec - 02 Jan	SKY express
24 Dec - 27 Dec	Aegean Airlines
24 Dec - 28 Dec	Aegean Airlines
22 Dec - 26 Dec	SKY express
23 Dec - 26 Dec	Aegean Airlines
14 Dec - 27 Dec	SKY express

Also check the deals for one-way flights from Kos to Vienna 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 Kos to Vienna in December from 251€

Return flights