Cheapest return flights from Seattle to Oslo in October from $427

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

Return flights

01 Oct - 08 Oct Icelandair
15 Oct - 22 Oct Scandinavian Airlines
25 Oct - 01 Nov Icelandair
27 Oct - 03 Nov Icelandair
28 Oct - 04 Nov Icelandair
30 Oct - 06 Nov Icelandair
31 Oct - 07 Nov Icelandair
30 Oct - 07 Nov Icelandair
19 Oct - 26 Oct Icelandair
07 Oct - 14 Oct Icelandair
08 Oct - 15 Oct Icelandair
09 Oct - 16 Oct Icelandair
10 Oct - 17 Oct Icelandair
16 Oct - 23 Oct Icelandair
11 Oct - 18 Oct Icelandair
12 Oct - 19 Oct Icelandair
29 Oct - 05 Nov Delta
26 Oct - 02 Nov Icelandair

Also check the deals for one-way flights from Seattle to Oslo 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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