AirHint found the following cheapest return flights from Warsaw (WMI) to Keflavik (KEF) in December 2025 (see full year).

Return flights

02 Dec - 08 Dec	Ryanair
02 Dec - 05 Dec	Wizz Air
06 Dec - 11 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
05 Dec - 11 Dec	Ryanair
06 Dec - 10 Dec	Wizz Air
02 Dec - 11 Dec	Ryanair
10 Dec - 13 Dec	Wizz Air
20 Dec - 27 Dec	Wizz Air
02 Dec - 06 Dec	Ryanair
19 Dec - 03 Jan	Ryanair
20 Dec - 03 Jan	Wizz Air
28 Dec - 03 Jan	Wizz Air
28 Dec - 05 Jan	Wizz Air
29 Dec - 03 Jan	Wizz Air
30 Dec - 06 Jan	Ryanair
24 Dec - 05 Jan	Ryanair
27 Dec - 09 Jan	Ryanair
19 Dec - 08 Jan	Ryanair
31 Dec - 07 Jan	Wizz Air

Also check the deals for one-way flights from Warsaw to Keflavik 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 Warsaw to Keflavik in December from 221€

Return flights