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

Return flights

31 Dec - 07 Jan	Wizz Air
24 Dec - 28 Dec	Wizz Air
14 Dec - 17 Dec	easyJet
18 Dec - 23 Dec	Wizz Air
24 Dec - 30 Dec	Wizz Air
13 Dec - 17 Dec	Condor
30 Dec - 01 Jan	Pegasus Airlines
23 Dec - 27 Dec	SWISS
23 Dec - 28 Dec	Eurowings
18 Dec - 22 Dec	Ryanair
17 Dec - 24 Dec	Eurowings
13 Dec - 23 Dec	Condor
22 Dec - 03 Jan	Wizz Air
22 Dec - 04 Jan	Wizz Air
30 Dec - 04 Jan	Finnair
23 Dec - 04 Jan	Finnair
28 Dec - 04 Jan	Ryanair
23 Dec - 03 Jan	Lufthansa
30 Dec - 05 Jan	Ryanair
29 Dec - 05 Jan	Wizz Air

Also check the deals for one-way flights from Hamburg 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 Hamburg to Keflavik in December from $345

Return flights