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

Return flights

11 Aug - 26 Aug	British Airways
19 Aug - 26 Aug	Scandinavian Airlines
27 Aug - 03 Sep	United
14 Aug - 21 Aug	Scandinavian Airlines
21 Aug - 28 Aug	United
15 Aug - 22 Aug	Finnair
01 Aug - 20 Aug	Scandinavian Airlines
11 Aug - 18 Aug	Scandinavian Airlines
17 Aug - 24 Aug	Scandinavian Airlines
07 Aug - 14 Aug	Scandinavian Airlines
30 Aug - 06 Sep	Scandinavian Airlines
05 Aug - 12 Aug	United

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

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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Cheapest return flights from San Francisco to Oslo in August from 408€

Return flights