Star Alliance airlines has the lowest fares overall from California to Scandinavia April into June 2016 with $593 round trip for Los Angeles to Oslo, Norway. United, Air Canada, Lufthansa, Swiss and SAS all combine for low flights to Copenhagen, Oslo, Bergen, Stockholm and other Scandinavian cities. American and British Airways compete on many of these routes with fares around $20 to $60 more round trip. SkyTeam Alliance with Delta, Air France and KLM offer these same routes for close to the United Airlines ticket prices. There are plenty of travel dates in April and May with fares in low to mid-$600s round trip.
American Airlines Los Angeles LAX – London LHR – Oslo OSL
$649.46 Tuesday April 12 – Monday April 18, 2016
United Airlines Los Angeles LAX – Newark EWR – Oslo OSL
$586.86 Monday May 9 – Monday May 16
American Airlines – British Airways
San Francisco SFO – New York JFK – London LHR – Stockholm ARN
$669.96 Thursday April 28 – Saturday May 7
You can fly for $40 less on the return with Finnair via Helsinki. I selected this ticket to display for AA 109 on the return. The77W is the best American Airlines aircraft for AAdvantage ExPlat members to use an SWU upgrade.
San Jose SJC has low United Airlines-Star Alliance fares to Oslo OSL only. Stockholm and Copenhagen are lower priced from SFO.
Air France flights San Francisco SFO – Paris CDG – Copenhagen CPH
KLM flights Copenhagen CPH – Amsterdam AMS – San Francisco SFO
$645.77 Monday May 2 – Saturday May 14
This past weekend I worked on data for a post to come later today on why Scandinavia is a relative bargain destination for U.S. tourists in 2016 compared to the cost of travel in Sweden and Norway in 2013-14.