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

Return flights

16 Dec - 23 Dec	SKY express
10 Dec - 13 Dec	Aegean Airlines
21 Dec - 02 Jan	SKY express
22 Dec - 02 Jan	SKY express
10 Dec - 17 Dec	SKY express
11 Dec - 19 Dec	SKY express
26 Dec - 31 Dec	SKY express
11 Dec - 23 Dec	SKY express
21 Dec - 23 Dec	SKY express
11 Dec - 20 Dec	SKY express
29 Dec - 02 Jan	Aegean Airlines
21 Dec - 25 Dec	SKY express
11 Dec - 13 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 343€

Return flights