Cheapest return SFO–OSL flights, May

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

Return flights

09 May - 15 May SWISS
12 May - 19 May Air France
10 May - 21 May Air France
11 May - 21 May Air France
12 May - 21 May Air France
13 May - 20 May Air France
13 May - 21 May Air France
18 May - 25 May Air France
19 May - 26 May Air France
20 May - 27 May KLM
27 May - 11 Jun Frontier Airlines
26 May - 02 Jun Air France
27 May - 03 Jun Air France
28 May - 04 Jun Air France
29 May - 05 Jun Air France
25 May - 01 Jun Air France
30 May - 11 Jun Lufthansa
31 May - 07 Jun Air France
30 May - 06 Jun Air France

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

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