Cheapest return flights from Seattle to Oslo in May from 372€

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

Return flights

23 May - 30 May Icelandair
27 May - 03 Jun Icelandair
25 May - 01 Jun Icelandair
26 May - 02 Jun Icelandair
28 May - 04 Jun Icelandair
30 May - 06 Jun Icelandair
03 May - 10 May Finnair
22 May - 29 May Icelandair
29 May - 05 Jun Icelandair
31 May - 07 Jun Scandinavian Airlines
24 May - 31 May Scandinavian Airlines

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

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