Cheapest return flights from Seattle to Copenhagen in October from $420

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

Return flights

11 Oct - 18 Oct Icelandair
04 Oct - 25 Oct Icelandair
12 Oct - 19 Oct Icelandair
27 Oct - 03 Nov Icelandair
23 Oct - 30 Oct Icelandair
09 Oct - 16 Oct Icelandair
10 Oct - 24 Oct Icelandair
29 Oct - 05 Nov Icelandair
31 Oct - 07 Nov Icelandair
13 Oct - 20 Oct Icelandair
16 Oct - 08 Nov Icelandair
12 Oct - 19 Oct Scandinavian Airlines direct
17 Oct - 24 Oct Icelandair
10 Oct - 24 Oct Scandinavian Airlines direct
25 Oct - 01 Nov Icelandair

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

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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