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

Return flights

01 Dec - 08 Dec	Finnair
29 Dec - 07 Jan	Finnair
28 Dec - 05 Jan	Finnair
01 Dec - 12 Dec	Finnair
14 Dec - 24 Dec	Finnair
28 Dec - 04 Jan	Finnair
10 Dec - 17 Dec	Finnair
23 Dec - 01 Jan	British Airways
16 Dec - 29 Dec	Finnair
24 Dec - 03 Jan	Finnair
23 Dec - 03 Jan	Finnair
12 Dec - 20 Dec	Qatar Airways
26 Dec - 02 Jan	Finnair
13 Dec - 27 Dec	Qatar Airways
30 Dec - 03 Jan	SWISS
24 Dec - 02 Jan	Finnair
19 Dec - 03 Jan	Finnair
20 Dec - 30 Dec	Finnair
22 Dec - 31 Dec	Finnair
20 Dec - 31 Dec	Finnair

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Keflavik in December from $658

Return flights