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

Return flights

03 Dec - 08 Dec	Finnair
30 Dec - 11 Jan	Finnair
07 Dec - 11 Jan	Finnair
31 Dec - 08 Jan	Finnair
05 Dec - 08 Dec	Finnair
28 Dec - 10 Jan	Finnair
02 Dec - 11 Dec	Finnair
02 Dec - 06 Dec	Finnair
08 Dec - 15 Dec	Finnair
01 Dec - 12 Dec	Finnair
08 Dec - 12 Dec	Finnair
25 Dec - 31 Dec	British Airways
22 Dec - 31 Dec	British Airways
20 Dec - 29 Dec	British Airways
25 Dec - 01 Jan	British Airways
24 Dec - 04 Jan	Finnair
20 Dec - 02 Jan	British Airways
22 Dec - 02 Jan	British Airways
26 Dec - 02 Jan	Finnair
19 Dec - 03 Jan	British Airways

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Hong Kong to Keflavik in December from $642

Return flights