Cheapest return flights from Seattle to Oslo in December from $550

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

Return flights

03 Dec - 24 Dec Icelandair
03 Dec - 27 Dec Turkish Airlines
07 Dec - 31 Dec WestJet
28 Dec - 06 Jan Lufthansa
10 Dec - 03 Jan Hawaiian Airlines
20 Dec - 10 Jan Hawaiian Airlines
25 Dec - 01 Jan Hawaiian Airlines
21 Dec - 02 Jan Hawaiian Airlines

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

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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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