Cheapest return flights from Seattle to Oslo in August from $457

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

Return flights

20 Aug - 27 Aug Scandinavian Airlines
31 Aug - 07 Sep Scandinavian Airlines
31 Aug - 10 Sep Scandinavian Airlines
12 Aug - 19 Aug Icelandair
13 Aug - 20 Aug Icelandair
14 Aug - 21 Aug Icelandair
16 Aug - 23 Aug Icelandair
17 Aug - 24 Aug Icelandair
19 Aug - 26 Aug Icelandair
27 Aug - 03 Sep Scandinavian Airlines
23 Aug - 02 Sep Icelandair
28 Aug - 07 Sep Icelandair
21 Aug - 28 Aug Icelandair
22 Aug - 29 Aug Icelandair
23 Aug - 30 Aug Icelandair
25 Aug - 01 Sep Icelandair
26 Aug - 02 Sep Icelandair
28 Aug - 04 Sep Icelandair
29 Aug - 05 Sep Icelandair

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

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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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