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

Return flights

25 Dec - 31 Dec	transavia	direct
02 Dec - 06 Dec	easyJet
02 Dec - 05 Dec	easyJet
19 Dec - 24 Dec	easyJet
19 Dec - 21 Dec	easyJet
19 Dec - 24 Dec	transavia	direct
02 Dec - 06 Dec	Icelandair	direct
02 Dec - 05 Dec	Icelandair	direct
29 Dec - 03 Jan	easyJet
19 Dec - 21 Dec	transavia	direct
19 Dec - 26 Dec	transavia	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 $198

Return flights