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

Return flights

15 Oct - 22 Oct	Scandinavian Airlines
21 Oct - 03 Nov	Icelandair
01 Oct - 08 Oct	Icelandair
25 Oct - 01 Nov	Icelandair
26 Oct - 02 Nov	Icelandair
27 Oct - 03 Nov	Icelandair
07 Oct - 14 Oct	Icelandair
08 Oct - 15 Oct	Icelandair
10 Oct - 17 Oct	Icelandair
22 Oct - 29 Oct	Icelandair
24 Oct - 31 Oct	Icelandair
11 Oct - 18 Oct	Icelandair
12 Oct - 19 Oct	Icelandair
13 Oct - 20 Oct	Icelandair
28 Oct - 04 Nov	Delta
29 Oct - 05 Nov	Delta
30 Oct - 06 Nov	Delta
31 Oct - 07 Nov	Icelandair

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

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 Seattle to Stockholm in October from $367

Return flights