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

Return flights

11 Dec - 15 Dec	transavia	direct
05 Dec - 11 Dec	transavia	direct
07 Dec - 15 Dec	transavia	direct
05 Dec - 12 Dec	transavia	direct
03 Dec - 15 Jan	transavia	direct
15 Dec - 02 Jan	transavia	direct
02 Dec - 15 Jan	easyJet
02 Dec - 16 Jan	easyJet
10 Dec - 14 Dec	transavia	direct
25 Dec - 05 Jan	transavia	direct
05 Dec - 09 Dec	transavia
05 Dec - 07 Dec	transavia	direct
15 Dec - 17 Dec	transavia	direct
22 Dec - 25 Dec	transavia	direct
10 Dec - 21 Dec	transavia
02 Dec - 15 Jan	Icelandair	direct
02 Dec - 16 Jan	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 $182

Return flights