Cheapest return flights from Seattle (SEA) to Oslo (OSL), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
25 Sep 25 Oct Icelandair
25 Sep 02 Oct Scandinavian Airlines
29 Sep 06 Oct Scandinavian Airlines
27 Sep 04 Oct Scandinavian Airlines
26 Sep 02 Oct Lufthansa
22 Sep 29 Sep Scandinavian Airlines
15 Sep 22 Sep Scandinavian Airlines
20 Sep 27 Sep Scandinavian Airlines
26 Sep 03 Oct Scandinavian Airlines
30 Sep 07 Oct Scandinavian Airlines
25 Sep 26 Sep Scandinavian Airlines
28 Sep 05 Oct Scandinavian Airlines
24 Sep 01 Oct Scandinavian Airlines
13 Sep 20 Sep Scandinavian Airlines
11 Sep 18 Sep Scandinavian Airlines
19 Sep 26 Sep Scandinavian Airlines
21 Sep 28 Sep Scandinavian Airlines
03 Sep 10 Sep Scandinavian Airlines
17 Sep 24 Sep Scandinavian Airlines
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deals for one-way flights from Seattle to Oslo in September.

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Updated Aug 26, 2026.

About these fares

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