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

Return flights

05 May - 12 May	Scandinavian Airlines
03 May - 10 May	British Airways
08 May - 15 May	Scandinavian Airlines
12 May - 19 May	British Airways
04 May - 11 May	British Airways
01 May - 08 May	British Airways
10 May - 17 May	British Airways
14 May - 21 May	British Airways
21 May - 28 May	British Airways
26 May - 02 Jun	British Airways
27 May - 03 Jun	British Airways
15 May - 22 May	British Airways
29 May - 05 Jun	British Airways
30 May - 06 Jun	British Airways
30 May - 11 Jun	Lufthansa

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

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 May from 375€

Return flights