Cheapest one-way flights from Seattle to Copenhagen in September from $175

AirHint found the following cheapest one-way flights from Seattle (SEA) to Copenhagen (CPH) in September 2025 (see full year).

One-Way flights

12 Sep Icelandair
02 Sep Icelandair
11 Sep Icelandair
12 Sep Scandinavian Airlines direct

Also check the deals for return flights from Seattle to Copenhagen in September.

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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