Cheapest return SEA–OSL flights, August

AirHint found the following cheapest return flights from Seattle (SEA) to Oslo (OSL) in August 2026 (see full year).

Return flights

31 Aug - 07 Sep Icelandair
06 Aug - 20 Aug Icelandair
13 Aug - 20 Aug Icelandair
24 Aug - 31 Aug Icelandair
11 Aug - 18 Aug Icelandair
12 Aug - 19 Aug Icelandair
17 Aug - 24 Aug Icelandair
18 Aug - 25 Aug Icelandair
19 Aug - 26 Aug Icelandair
27 Aug - 08 Sep Icelandair
25 Aug - 01 Sep Icelandair
26 Aug - 02 Sep Icelandair
29 Aug - 05 Sep Icelandair
30 Aug - 06 Sep Icelandair
05 Aug - 12 Aug Icelandair
16 Aug - 23 Aug Icelandair
27 Aug - 03 Sep Icelandair
28 Aug - 04 Sep Icelandair
29 Aug - 07 Sep Icelandair

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

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