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

Return flights

06 Dec - 12 Dec	SWISS
13 Dec - 20 Dec	SWISS
06 Dec - 13 Dec	SWISS
31 Dec - 08 Jan	Wizz Air UK
05 Dec - 12 Dec	Wizz Air UK
05 Dec - 09 Dec	Wizz Air UK
04 Dec - 07 Dec	LOT
12 Dec - 19 Dec	SWISS
05 Dec - 08 Dec	SWISS
05 Dec - 11 Dec	Transavia France
12 Dec - 15 Dec	easyJet
22 Dec - 01 Jan	Ryanair
30 Dec - 01 Jan	Lufthansa
25 Dec - 01 Jan	LOT
29 Dec - 03 Jan	Condor
31 Dec - 03 Jan	Ryanair
27 Dec - 01 Jan	Ryanair
21 Dec - 02 Jan	Ryanair
22 Dec - 02 Jan	LOT
30 Dec - 05 Jan	Ryanair

Also check the deals for one-way flights from Prague 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Prague to Keflavik in December from 165€

Return flights