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

Return flights

25 Dec - 07 Jan	transavia	direct
24 Dec - 07 Jan	transavia	direct
25 Dec - 05 Jan	transavia
22 Dec - 07 Jan	transavia	direct
25 Dec - 05 Jan	transavia	direct
23 Dec - 07 Jan	Scandinavian Airlines
26 Dec - 07 Jan	transavia	direct
31 Dec - 04 Jan	easyJet
19 Dec - 04 Jan	transavia
31 Dec - 04 Jan	transavia	direct
19 Dec - 28 Dec	transavia	direct
19 Dec - 26 Dec	transavia
23 Dec - 24 Dec	easyJet
20 Dec - 27 Dec	Icelandair
19 Dec - 26 Dec	transavia	direct
20 Dec - 27 Dec	Icelandair	direct

Also check the deals for one-way flights from Keflavik to Amsterdam 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 Keflavik to Amsterdam in December from $243

Return flights