Star Alliance seems to be leading the way with discount fares from Los Angeles LAX to cities around Germany, Scandinavia, Helsinki and London priced at $504 to $573 for departures January to about May 4, 2017. Oneworld has lowest fares to Helsinki and many airlines compete on Scandinavian routes. San Francisco also has several airports in Scandinavia priced in the mid to upper $500s.
$504 Air New Zealand (Feb-March)
$533-$554 Virgin Atlantic / Delta (Feb-May)
$531-$554 Oneworld (Feb-May)
$588-$598 Star Alliance (Feb-May)
Hamburg, Berlin and Hanover are on sale for Virgin Atlantic to London and British Airways to Germany in mid-$500s through online travel agency sites in Momondo.com and Skyscanner.com searches.
British Airways coded flights through online travel agencies.
Los Angeles LAX – Hamburg, Germany Tue Mar 7 – Tue Mar 14
$502 to $567 round trip
Copenhagen, Denmark $521-$545 (Star Alliance best fares)
Oslo, Norway $546 – $573 all alliances
Bergen, Norway $550-$576 all alliances
Stockholm, Sweden $513-$555 all alliances
Helsinki, Finland $513-$548 Oneworld (Jan – May 11)