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

Return flights

01 Dec - 07 Dec	LOT
04 Dec - 07 Dec	LOT
05 Dec - 10 Dec	Ryanair
11 Dec - 13 Dec	Lufthansa
01 Dec - 06 Dec	Ryanair
10 Dec - 13 Dec	Transavia France
02 Dec - 06 Dec	LOT
11 Dec - 14 Dec	Lufthansa
12 Dec - 14 Dec	Ryanair
23 Dec - 10 Jan	SWISS
02 Dec - 05 Dec	Lufthansa
20 Dec - 01 Jan	Ryanair
30 Dec - 08 Jan	Finnair
31 Dec - 06 Jan	Lufthansa
29 Dec - 01 Jan	Ryanair
31 Dec - 03 Jan	easyJet
26 Dec - 01 Jan	Jet2
20 Dec - 04 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
23 Dec - 02 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 218€

Return flights