Cheapest return flights from Seattle to Copenhagen in December from 396€

AirHint found the following cheapest return flights from Seattle (SEA) to Copenhagen (CPH) in December 2025 (see full year).

Return flights

11 Dec - 18 Dec Icelandair
03 Dec - 10 Dec Icelandair
06 Dec - 13 Dec Icelandair
31 Dec - 07 Jan Icelandair
29 Dec - 05 Jan Icelandair
01 Dec - 27 Dec Icelandair
16 Dec - 23 Dec Icelandair
15 Dec - 29 Dec Air France
14 Dec - 29 Dec Icelandair
21 Dec - 28 Dec Icelandair
12 Dec - 04 Jan Air France
20 Dec - 13 Jan Icelandair
26 Dec - 02 Jan Icelandair

Also check the deals for one-way flights from Seattle to Copenhagen in December.

Skyscanner

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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